FR4 PCB Material

June 2nd, 2026

FR4 PCB material is the most widely used base material for rigid printed circuit boards because it offers a strong balance of electrical insulation, mechanical strength, thermal resistance, process stability, and cost control. For many industrial control boards, communication modules, consumer electronics, power supplies, automotive electronics, and medical electronic products, FR4 remains the default choice unless the design requires high-frequency laminates, metal-core heat dissipation, ceramic substrates, or extreme high-temperature performance.

For engineers, FR4 selection is not only about choosing standard FR4. The real decision involves Tg value, dielectric performance, laminate brand, copper thickness, board thickness, layer count, CTI, CAF resistance, flame rating, soldering profile, and long-term reliability. For buyers, the key is to match the material grade with the application requirement instead of paying for unnecessary specifications or accepting a low-grade laminate that may create production risks later.

What Is FR4 PCB Material?

FR4 PCB material is a glass fiber reinforced epoxy laminate used as the insulating base of many printed circuit boards. “FR” means flame retardant, and “4” refers to a material classification based on woven glass cloth and epoxy resin. In PCB manufacturing, FR4 provides the mechanical platform that holds copper circuits, plated holes, solder mask, surface finish, and electronic components together.

Structure	Function
Woven glass fiber	Provides mechanical strength and dimensional stability
Epoxy resin	Bonds the glass cloth and provides insulation
Copper foil	Forms the conductive circuit pattern
Prepreg	Bonds inner layers in multilayer PCB stack-ups
Core laminate	Provides stable thickness and copper-clad base material

FR4 is popular because it works well with common PCB processes, including drilling, copper plating, lamination, imaging, etching, solder mask coating, surface finishing, SMT assembly, and reflow soldering. It is also available in many thicknesses, copper weights, Tg grades, and laminate brands, which makes it practical for both prototype and mass production.

Why Is FR4 PCB Material Important in PCB Manufacturing?

FR4 PCB material directly affects electrical performance, soldering reliability, mechanical strength, warpage control, insulation resistance, and long-term product stability. Even when two PCBs look similar on the outside, different FR4 grades can behave differently during lamination, drilling, plating, soldering, and field operation.

Manufacturing Area	Why FR4 Selection Matters
Drilling	Poor material can cause smear, rough hole walls, or drill wear
Lamination	Tg and resin flow affect bonding and thickness control
Plating	Hole wall quality affects copper reliability
SMT reflow	Heat resistance affects delamination and warpage
Electrical testing	Dielectric quality affects insulation and leakage
Reliability testing	Material stability affects thermal cycling and humidity performance

For simple low-voltage products, standard FR4 may be enough. For automotive electronics, industrial controllers, medical electronics, LED power boards, and communication equipment, the laminate must be selected with more care. A wrong material choice may not fail during prototype testing, but it can show problems during batch production, thermal cycling, humidity exposure, or long-term use.

How Does FR4 PCB Material Work?

FR4 works by combining glass fiber reinforcement with epoxy resin insulation. The glass fabric gives the board rigidity and dimensional control. The resin fills the glass weave, bonds the structure, and provides dielectric insulation between copper layers. Copper foil is bonded to the FR4 surface, then etched into circuit patterns.

In a multilayer PCB, FR4 cores and prepregs are stacked with inner copper layers. During lamination, heat and pressure make the prepreg resin flow and cure, bonding the full stack into one solid board. After lamination, the board is drilled, plated, patterned, solder masked, surface finished, and routed.

Stage	Required Material Behavior
PCB fabrication	Stable during drilling, lamination, etching, and plating
PCBA assembly	Resistant to reflow soldering temperature and mechanical stress
End application	Stable under heat, humidity, voltage, vibration, and operating load

This is why engineers often check Tg, Td, CTE, dielectric constant, dissipation factor, CTI, moisture absorption, and CAF resistance before confirming a material.

What Are the Main Properties of FR4 PCB Material?

FR4 PCB material has several core properties that define how it performs in production and use. These values vary by laminate brand and grade, so they should be confirmed from the actual datasheet before production.

Property	Meaning	Typical Design Concern
Tg	Glass transition temperature	Heat resistance during reflow and operation
Td	Decomposition temperature	Material degradation under high heat
Dk	Dielectric constant	Signal speed and impedance control
Df	Dissipation factor	Signal loss, especially at higher frequencies
CTE	Coefficient of thermal expansion	Hole reliability and dimensional stability
CTI	Comparative tracking index	Surface insulation under voltage stress
Moisture absorption	Water uptake level	Reflow reliability and insulation stability
Peel strength	Copper bonding strength	Trace adhesion and durability
Flame rating	Fire resistance	Safety and compliance requirements

For many standard FR4 materials, Dk is commonly around 4.2 to 4.8 depending on resin system, glass style, frequency, and test method. High-speed or impedance-sensitive designs should not rely on generic values. They should use laminate-specific data and controlled stack-up design.

What Types of FR4 PCB Material Are Commonly Used?

FR4 is not a single material grade. It includes several categories used for different performance levels and cost targets.

FR4 Type	Typical Use
Standard FR4	Consumer electronics, simple control boards, general products
Mid-Tg FR4	Industrial products, improved thermal stability
High-Tg FR4	Automotive, medical, industrial control, multilayer PCBs
Halogen-free FR4	Products requiring lower halogen content
CAF-resistant FR4	Dense multilayer boards, high-reliability applications
High-CTI FR4	Power electronics and higher-voltage insulation designs
Low-Dk / low-loss FR4	Higher-speed digital and communication boards
Lead-free compatible FR4	Boards exposed to higher Pb-free reflow temperatures

For many modern PCB projects, High-Tg FR4 is selected when the board has higher layer count, dense SMT assembly, lead-free soldering, long service life, or stricter reliability requirements. It gives better thermal margin during reflow and helps reduce risks such as delamination, barrel cracking, and dimensional instability.

Standard FR4 vs High-Tg FR4: What Is the Difference?

The main difference between standard FR4 and High-Tg FR4 is the glass transition temperature. Tg is the temperature range where the resin system changes from a glassy state to a softer rubbery state. Once the material passes this region, thermal expansion increases, and dimensional stability becomes harder to control.

Item	Standard FR4	High-Tg FR4
Typical Tg Range	Around 130–140°C	Around 150–180°C or higher
Thermal Stability	Suitable for common electronics	Better for demanding reflow and operation
Cost	Lower	Higher
Layer Count Suitability	Better for simple boards	Better for multilayer and dense boards
Application Fit	Consumer, general control	Automotive, industrial, medical, communication
Reliability Margin	Moderate	Stronger thermal margin

High-Tg FR4 is often preferred for 6-layer, 8-layer, 10-layer, and higher multilayer PCBs because lamination stress, copper distribution, drilling quality, and reflow exposure become more demanding. It is also useful when components have large thermal mass, when boards pass through multiple reflow cycles, or when the final product works in warm environments.

Which FR4 PCB Material Brands Are Common in PCB Production?

Different PCB manufacturers may use different laminate brands depending on customer requirements, certification needs, cost targets, and regional availability. Common FR4 laminate brands include Shengyi, Kingboard, ITEQ, Nan Ya, Isola, Panasonic, Ventec, and other qualified material suppliers.

Brand	Common Positioning
Shengyi	Widely used in standard and High-Tg FR4 production
Kingboard	Common in cost-effective FR4 PCB manufacturing
ITEQ	Used for standard, High-Tg, and higher-performance laminates
Nan Ya	Used in multilayer and industrial PCB projects
Isola	Known for high-reliability and performance laminates
Panasonic	Used in advanced and high-reliability applications
Ventec	Offers High-Tg, thermal, and specialty materials
Rogers	Usually selected for RF/high-frequency laminates, not standard FR4 replacement

For most FR4 PCB projects, the material brand should be confirmed before mass production. If the project requires UL recognition, automotive reliability, medical traceability, or long-term supply consistency, the exact laminate model should be specified in the drawing or fabrication notes.

How to Choose FR4 PCB Material for Different Applications?

Choosing FR4 PCB material should start from the actual working conditions, not only the unit price. A simple IoT board, an automotive control module, and a medical monitoring PCB may all use FR4, but their material requirements can be different.

Application	Suggested FR4 Focus
Consumer electronics	Cost-effective standard FR4, stable basic performance
Industrial control	High-Tg FR4, good dimensional stability, reliable insulation
Automotive electronics	High-Tg, CAF resistance, thermal cycling performance
Medical electronics	Stable laminate source, documentation, traceability, clean process control
Communication equipment	Controlled Dk/Df, impedance stability, low-loss options if needed
Power supply boards	Copper thickness, CTI, insulation spacing, thermal margin
LED control boards	Heat resistance, copper weight, possible metal-core alternative if heat is high
Multilayer control boards	High-Tg material, stable lamination, controlled stack-up

A practical selection method is to first define operating temperature, voltage, signal speed, layer count, copper weight, assembly profile, product lifetime, and compliance requirements. Then the PCB supplier can recommend a suitable FR4 grade and stack-up.

What Thickness and Copper Weight Are Used with FR4 PCB Material?

FR4 PCB thickness can range from very thin boards to thick power boards. Common finished thicknesses include 0.4 mm, 0.6 mm, 0.8 mm, 1.0 mm, 1.2 mm, 1.6 mm, 2.0 mm, and 2.4 mm. The most common finished thickness for many standard products is 1.6 mm, but compact electronics and multilayer boards often use thinner structures.

Copper Weight	Typical Use
0.5 oz	Fine lines, low-current circuits, compact designs
1 oz	Standard signal and control boards
2 oz	Higher-current paths and better thermal spreading
3 oz and above	Power electronics, heavy copper designs, special current requirements

FR4 thickness and copper weight must be considered together. Heavy copper requires wider spacing, stronger etching control, suitable solder mask thickness, and proper lamination design. Thin FR4 boards may need extra attention to warpage during SMT assembly, especially when copper distribution is uneven.

FR4 PCB Material vs Other PCB Materials

FR4 is versatile, but it is not always the best material for every PCB. Some projects require different substrates because of heat, frequency, flexibility, or mechanical requirements.

Material	Main Advantage	Best-Fit Application
FR4	Balanced cost, strength, insulation, process maturity	Most rigid PCB applications
High-frequency laminate	Lower signal loss and stable Dk	RF, antenna, microwave, high-speed communication
Aluminum PCB	Better heat dissipation than FR4	LED lighting, power modules, thermal products
Copper substrate PCB	Strong thermal and current handling	High-power electronics
Ceramic PCB	High thermal conductivity and excellent dimensional stability	Power modules, sensors, aerospace, medical, high-temperature circuits
Flexible PCB	Bendable and lightweight	Wearables, compact modules, dynamic connections
Rigid-flex PCB	Combines rigid and flexible sections	Medical devices, aerospace, compact electronics

FR4 is usually the first choice when the design does not have extreme thermal, RF, or mechanical bending requirements. If heat dissipation is the main challenge, aluminum, copper substrate, or ceramic PCB may be more suitable. If signal loss is critical at high frequencies, a low-loss laminate may be required.

What Standards and Tests Apply to FR4 PCB Material?

FR4 PCB material and finished boards are commonly evaluated through material datasheets, IPC standards, UL recognition, RoHS compliance, and factory quality control processes. The exact standard depends on the product market and application.

Test / Standard Area	Purpose
UL 94 V-0	Confirms flame retardant behavior
IPC-4101	Defines laminate and prepreg material requirements
IPC-6012	Covers rigid PCB performance and qualification
IPC-A-600	Provides acceptability criteria for printed boards
IPC-TM-650	Includes many PCB test methods
RoHS / REACH	Supports environmental compliance for global markets
Electrical test	Confirms open/short performance
Microsection analysis	Checks plating thickness, hole wall quality, and laminate condition
Thermal stress test	Evaluates heat resistance and interconnect reliability
Solderability test	Confirms surface finish readiness for assembly

For high-reliability projects, material traceability is important. Buyers should request laminate brand, material model, UL file information if needed, stack-up confirmation, copper thickness, surface finish, impedance report, and test records according to the application.

Common FR4 PCB Material Problems and Failure Analysis

Many FR4 PCB failures are not caused by the base material alone. They often come from the mismatch between material selection, PCB design, fabrication process, assembly profile, and product environment.

Problem	Possible Cause	Practical Prevention
Delamination	Low thermal resistance, moisture, poor lamination	Use suitable Tg, bake when needed, control lamination
Warpage	Uneven copper distribution, thin board, high heat	Balance copper, optimize stack-up, control panel design
Barrel cracking	High CTE stress, poor plating, thermal cycling	Use reliable material, proper hole plating, thermal testing
CAF risk	Dense spacing, humidity, voltage stress	Select CAF-resistant material, improve spacing and cleanliness
Poor impedance control	Unstable Dk, inaccurate stack-up	Use laminate datasheet values and controlled stack-up
Solder mask cracking	Heavy copper, thermal stress, process mismatch	Adjust solder mask process and copper design
Insulation failure	Contamination, moisture, poor spacing	Improve cleaning, material selection, and creepage design

In factory review, engineers usually check the Gerber data, stack-up, drill chart, copper balance, minimum spacing, impedance requirement, assembly temperature profile, and working environment before confirming the FR4 specification. This helps prevent avoidable problems before production starts.

How Does FR4 PCB Material Affect PCB Cost?

FR4 PCB cost is affected by laminate grade, thickness, copper weight, layer count, board size, surface finish, tolerance, testing requirements, and production volume. The material itself is only one part of the total PCB cost, but it can influence several process costs.

Cost Factor	Impact on Price
High-Tg material	Higher laminate cost, better thermal margin
Special brand requirement	May increase cost and lead time
Thick copper	More etching difficulty and process control
Thin board	More handling and warpage control
Multilayer stack-up	More lamination steps and inspection
Impedance control	Requires stack-up engineering and testing
Tight tolerance	Increases manufacturing control cost
Special testing	Adds inspection time and documentation

The best way to control cost is not to choose the cheapest FR4. It is to choose the right material grade for the actual risk level. For example, using High-Tg FR4 on a high-density industrial controller may reduce assembly and field reliability risks. For a simple low-temperature consumer board, standard FR4 may be more economical.

FR4 PCB Material Case Study: 8-Layer Industrial Control Board

A customer needed an 8-layer FR4 PCB for an industrial control system. The board included fine-pitch ICs, controlled impedance traces, multiple power domains, and dense via distribution. The product would operate inside a control cabinet where ambient temperature could rise during long working cycles.

The first cost-driven option used standard Tg FR4. During engineering review, the main risks were multilayer lamination stability, reflow thermal stress, impedance consistency, and long-term operation under warm conditions. The material was then upgraded to High-Tg FR4, with a controlled stack-up and balanced copper distribution.

Item	Engineering Decision
Layer count	8 layers for routing density and power integrity
Material	High-Tg FR4 for better thermal margin
Surface finish	ENIG for fine-pitch assembly and storage stability
Thickness	Controlled finished thickness for mechanical fit
Impedance	Verified through stack-up and test coupon
Inspection	AOI, electrical test, microsection, and final quality check

The final solution improved process confidence without moving to an expensive specialty laminate. This is a common engineering decision: use a better FR4 grade when the design needs reliability, but avoid over-specifying material when FR4 already meets the project requirement.

What Should Be Checked Before Ordering FR4 PCBs?

Before placing an FR4 PCB order, engineering and purchasing teams should confirm both technical and commercial details. This avoids quotation gaps, production delays, and material substitutions.

FR4 material grade and Tg requirement
Laminate brand or approved alternatives
Finished board thickness and tolerance
Copper weight for inner and outer layers
Layer count and stack-up structure
Minimum trace width and spacing
Minimum hole size and aspect ratio
Impedance control requirement
Surface finish, such as HASL, OSP, ENIG, or immersion silver
Solder mask color and silkscreen requirement
UL, RoHS, REACH, or other compliance needs
Testing requirements, including electrical test, AOI, impedance, microsection, or reliability testing
Panelization, fiducials, tooling holes, and assembly edges
Production quantity, delivery schedule, and documentation requirements

For regulated or long-life products, buyers should also ask whether the supplier can provide material traceability, batch records, inspection reports, and stable material sourcing for repeat orders.

How to Choose a Reliable FR4 PCB Material Manufacturer?

A reliable FR4 PCB manufacturer should do more than produce boards from supplied Gerber files. The supplier should understand material behavior, stack-up design, DFM review, drilling control, lamination quality, surface finish selection, and assembly requirements.

Supplier Capability	Why It Matters
DFM review	Finds design risks before fabrication
Stack-up engineering	Supports impedance, thickness, and layer reliability
Material traceability	Helps regulated and repeat-production projects
Quality system	Supports stable manufacturing control
Testing capability	Confirms electrical, mechanical, and process quality
PCBA support	Ensures PCB design fits assembly needs
Component sourcing	Helps turnkey projects reduce coordination work
Production experience	Reduces avoidable process mistakes

A China source factory can be a practical choice for global buyers when it offers real manufacturing capability, clear communication, engineering support, quality documentation, and stable export experience. The key is to verify the actual capability instead of relying only on a low quote.

Best Technology supports FR4 PCB fabrication, multilayer PCB production, High-Tg FR4 boards, impedance-controlled PCB manufacturing, component sourcing, PCBA assembly, DFM review, testing, and turnkey electronics manufacturing for global customers. For projects that need engineering support from prototype to volume production, early material review can reduce cost and improve production stability.

FAQ About FR4 PCB Material

What does FR4 mean in PCB material?

FR4 means flame-retardant glass fiber reinforced epoxy laminate. It is the most common base material for rigid PCBs. The woven glass cloth provides strength, while the epoxy resin provides insulation and bonding. It is widely used because it balances performance, manufacturability, and cost.

Is FR4 PCB material suitable for high-temperature applications?

FR4 can support many applications with moderate thermal requirements, especially when High-Tg FR4 is used. For continuous high-temperature operation, repeated severe thermal cycling, or very high power density, engineers should evaluate High-Tg FR4, metal-core PCB, ceramic PCB, or another specialty material.

What is the difference between standard FR4 and High-Tg FR4?

Standard FR4 usually has a lower glass transition temperature, while High-Tg FR4 provides better thermal stability. High-Tg material is often used for multilayer PCBs, lead-free assembly, automotive electronics, industrial control boards, and products that need stronger reliability margins.

Can FR4 be used for multilayer PCBs?

Yes. FR4 is widely used for 4-layer, 6-layer, 8-layer, 10-layer, and higher multilayer rigid PCBs. For higher layer counts, High-Tg FR4 and a controlled stack-up are usually recommended to improve lamination stability, drilling quality, impedance control, and reflow reliability.

Is FR4 good for high-frequency PCB design?

FR4 can be used for some moderate-speed and controlled-impedance designs, but it may not be ideal for high-frequency RF, microwave, or very low-loss applications. For those projects, engineers often choose Rogers, PTFE-based, hydrocarbon ceramic, or other low-loss laminates.

What is the common thickness of FR4 PCB?

Common FR4 PCB thicknesses include 0.8 mm, 1.0 mm, 1.2 mm, 1.6 mm, and 2.0 mm. A 1.6 mm board is common for many standard products. Thinner or thicker boards are selected based on mechanical space, connector fit, impedance, copper weight, and assembly needs.

Does FR4 PCB material absorb moisture?

FR4 can absorb a small amount of moisture. If moisture is trapped inside the board and exposed to high reflow temperature, it may increase the risk of delamination or blistering. Proper storage, baking when needed, and suitable laminate selection help reduce this risk.

What copper weight is used with FR4 PCB material?

Common copper weights include 0.5 oz, 1 oz, and 2 oz. Higher copper weights are used for power electronics and high-current circuits. Heavy copper FR4 boards require more careful spacing, etching control, solder mask design, and thermal management review.

Is FR4 PCB material flame retardant?

FR4 is designed as a flame-retardant laminate, and many FR4 materials meet UL 94 V-0 requirements. For certified products, buyers should confirm the actual laminate model, UL file information, and finished board compliance requirements with the PCB manufacturer.

Can FR4 PCB material be used for automotive electronics?

Yes, FR4 is used in many automotive electronic boards. However, automotive projects often require High-Tg FR4, stable material traceability, strict process control, thermal cycling review, and compliance with relevant quality requirements. Material selection should match the actual application environment.

Why does FR4 PCB material cost vary between suppliers?

Cost varies because suppliers may use different laminate brands, Tg grades, copper weights, process controls, testing levels, and documentation standards. A lower quote may not include the same material grade, inspection depth, or traceability. Always compare the full specification, not only the unit price.

How do I know which FR4 grade my PCB needs?

Start with the product’s layer count, operating temperature, voltage, signal speed, assembly profile, copper thickness, lifetime, and industry requirements. For simple electronics, standard FR4 may work well. For dense, high-reliability, or thermally demanding boards, High-Tg or specialty FR4 is often safer.

Conclusion

FR4 PCB material remains the practical foundation for most rigid PCB designs because it combines insulation, mechanical strength, process maturity, thermal performance, and cost efficiency. The key is to select the correct FR4 grade instead of treating all FR4 laminates as equal. Tg, copper weight, thickness, Dk/Df, CTI, CAF resistance, laminate brand, stack-up design, and testing requirements all affect final performance.

For engineers, the best choice is the material that supports electrical stability, assembly reliability, and application life. For buyers, the best choice is the supplier that can provide clear material recommendations, controlled production, reliable inspection, and repeatable quality from prototype to batch production.

RT 5880 PCB Material Selection Guide for High Frequency Designs

May 25th, 2026

Is RT 5880 the right PCB material for your low-loss high frequency design? RF, microwave, antenna, radar, and broadband communication boards need stable dielectric behavior, controlled impedance, and low signal loss.

RT 5880 helps these designs because it uses a PTFE-based structure with very low dielectric loss and a low dielectric constant. This article explains Dk, thickness, loss tangent, datasheet values, common uses, price factors, and fabrication control points before sending a board for production.

RT 5880 PCB, https://www.bestpcbs.com/blog/2026/05/rt-5880/

What is RT-Duroid 5880?

RT-Duroid 5880 is a glass microfiber reinforced PTFE high frequency laminate used for stripline and microstrip PCB circuits. Rogers describes this laminate as a PTFE composite reinforced with glass microfibers. It is designed for high frequency and broadband applications.

This material is different from standard FR4. FR4 works well for many ordinary electronic boards, while RT-Duroid 5880 is made for circuits where dielectric behavior directly affects signal transmission.

The randomly oriented glass microfibers help maintain dielectric constant uniformity. This gives the material more predictable RF behavior across panels and frequencies.

Why Is RT 5880 Used for High Frequency PCB Designs?

RT 5880 is used for high frequency PCB designs because it provides low Dk, very low dielectric loss, and stable RF behavior. In high frequency circuits, the substrate is not just a mechanical carrier. It becomes part of the electrical path. Here are main reasons include:

Low dielectric constant: A Dk near 2.20 helps reduce dielectric loading and allows wider RF traces for many impedance targets.
Very low loss: A dissipation factor of 0.0009 at 10 GHz helps reduce energy loss as the signal travels through the board.
Stable electrical behavior: Uniform electrical properties help support repeatable circuit performance across a wide frequency range.
Low moisture absorption: Water absorption is listed as 0.02%, which helps support steadier electrical behavior in humid working conditions.
Good fit for microstrip and stripline: These are common transmission structures in RF and microwave boards.
Useful for low-loss signal paths: It fits antenna feeds, radar channels, and broadband circuits where insertion loss must be controlled.

What is the Dielectric Constant of Rogers RT Duroid 5880?

The dielectric constant of Rogers RT Duroid 5880 is 2.20 ± 0.02 at 10 GHz, with a design Dk of 2.20. This value is one of the main reasons the material is used in RF and microwave circuits.

Dk tells you how much the dielectric slows a signal compared with air. A lower Dk can support faster signal propagation and wider traces for a given impedance target.

Dk consistency also matters. If the dielectric constant shifts too much, the same trace width may not deliver the same impedance or phase behavior. This is why a stable RF laminate is valuable in antenna, radar, and communication boards.

RT 5880, https://www.bestpcbs.com/blog/2026/05/rt-5880/

How Thick is Rogers RT/Duroid 5880?

Rogers RT/Duroid 5880 is commonly available in dielectric thicknesses such as 0.005″, 0.010″, 0.020″, 0.031″, and 0.062″. These correspond to 0.127 mm, 0.252 mm, 0.508 mm, 0.787 mm, and 1.575 mm.

For RF circuits, thickness should be reviewed together with trace width, copper weight, impedance target, frequency, and stackup. A thinner dielectric can support compact RF layouts, while a thicker dielectric may allow wider impedance traces and fit some antenna structures better.

What Is the Loss Tangent of RT Duroid 5880?

The loss tangent of RT Duroid 5880 is 0.0009 at 10 GHz. Rogers also lists a dissipation factor of 0.0004 at 1 MHz for this material.

Loss tangent is also called dissipation factor. It shows how much signal energy is lost inside the dielectric material. A lower number means less dielectric loss.

This is important for long RF traces, antenna feed lines, radar circuits, microwave links, and broadband modules. Lower dielectric loss helps preserve signal strength and reduce insertion loss.

Rogers RT Duroid 5880 Specification & Datasheet Overview

The Rogers RT Duroid 5880 datasheet shows a low-Dk, low-loss PTFE composite laminate for high frequency PCB work. The table below focuses on practical values used during material review, stackup discussion, and fabrication planning.

Item	Specification
Material Type	Glass microfiber reinforced PTFE composite
Design Dk	2.20
Process Dk	2.20 ± 0.02 at 10 GHz
Dissipation Factor	0.0009 at 10 GHz
Dissipation Factor at 1 MHz	0.0004
Thermal Coefficient of er	-125 ppm/°C
Volume Resistivity	2 × 10⁷ Mohm
Surface Resistivity	3 × 10⁷ Mohm
Moisture Absorption	0.02%
Thermal Conductivity	0.20 W/m/K
CTE X / Y / Z	31 / 48 / 237 ppm/°C
Density	2.2 g/cm³
Copper Peel Strength	31.2 pli / 5.5 N/mm
Flammability	UL94 V-0
Lead-Free Process Compatible	Yes
Standard Copper Foil	1/2 oz and 1 oz ED or rolled copper foil

RT-duroid 5880 Data Sheet-EBest Download

These values show why the material is widely considered for low-loss RF circuits. The most important points are its 2.20 design Dk, 0.0009 dissipation factor at 10 GHz, and 0.02% moisture absorption.

Where Is RT 5880 PCB Commonly Used?

RT 5880 PCB is commonly used in RF, microwave, antenna, radar, satellite communication, and broadband circuit applications. These products usually need low insertion loss, stable impedance, and repeatable signal behavior. Common uses include:

RF antenna boards
Microwave transmission circuits
Radar front-end boards
Satellite communication modules
Broadband communication devices
Point-to-point wireless radio antennas
Millimeter-wave test circuits
Low-loss feed networks
Aerospace RF assemblies
High frequency measuring fixtures

Rogers lists typical uses such as commercial airline broadband antennas, microstrip and stripline circuits, millimeter-wave applications, military radar systems, missile guidance systems, and point-to-point digital radio antennas.

RT 5880 PCB vs FR4: What Is the Difference?

RT 5880 PCB is made for low-loss high frequency circuits, while FR4 is mainly used for general electronic boards. FR4 remains practical for many products, but it is not the first choice when RF loss, Dk stability, and phase behavior are strict requirements.

Item	RT 5880 PCB	FR4 PCB
Base Material	PTFE composite with glass microfiber	Epoxy glass laminate
Main Use	RF, microwave, antenna, radar, broadband circuits	General electronic circuits
Dielectric Constant	2.20 design Dk	Usually higher and grade-dependent
Dielectric Loss	Very low	Higher at high frequency
Moisture Absorption	0.02%	Usually higher than PTFE RF laminates
Fabrication Difficulty	Needs careful PTFE material handling	Easier for most PCB factories
Cost Level	Higher	Lower
Best Fit	Low-loss signal paths and RF stability	Cost-sensitive and standard circuits

What Affects RT Duroid 5880 Price Per Square Foot?

RT Duroid 5880 price per square foot depends on laminate thickness, copper foil, copper weight, board size, layer count, tolerance, quantity, and testing needs. A fixed online number can be misleading because each PCB design has different production demands. Main price factors include:

Dielectric thickness: Different thicknesses affect material cost and handling difficulty.
Copper foil type: ED copper and rolled copper have different price levels.
Copper weight: 1/2 oz, 1 oz, and heavier copper change both material and process cost.
Board size: Larger boards affect panel use and yield.
Layer count: Multilayer structures add lamination, registration, and inspection cost.
Impedance control: Tight impedance tolerance may require coupons, review time, and testing.
Hole structure: Small holes, dense drilling, slots, and tight routing add process time.
Surface finish: ENIG, immersion silver, OSP, and other finishes have different costs.
Testing needs: Electrical test, impedance test, and special inspection add cost.
Material lead time: Laminate availability can affect both delivery and pricing.

For a more accurate quote, prepare Gerber files, stackup, dielectric thickness, copper weight, board size, quantity, surface finish, and impedance requirements.

What Should Be Controlled During RT 5880 PCB Fabrication?

RT 5880 PCB fabrication should control material handling, stackup, drilling, etching, surface finish, impedance, and final inspection. PTFE-based laminates are softer than many rigid PCB materials, so process discipline matters. Important control points include:

Material verification: Confirm material grade, thickness, copper foil type, copper weight, and batch traceability.
Clean handling: Avoid scratches, dents, stains, and copper surface contamination during panel movement.
Stackup review: Confirm dielectric thickness, copper weight, layer count, bonding material, and finished thickness.
Impedance calculation: Review trace width, spacing, dielectric height, copper thickness, and surface finish effect.
Drilling control: Use proper drill tools, feed rate, stack height, and tool life control to reduce hole wall defects.
Copper preparation: Use suitable cleaning methods because aggressive mechanical scrubbing may damage soft PTFE-based cores.
Etching compensation: Adjust trace geometry to maintain final line width after etching.
Surface finish selection: Choose a finish according to soldering needs, storage time, RF contact areas, and assembly process.
Inspection and testing: Use AOI, electrical test, dimensional checks, and impedance testing when required.

How to Choose a Reliable RT 5880 PCB Manufacturer?

A reliable RT 5880 PCB manufacturer should understand high frequency materials, PTFE processing, stackup control, impedance control, and RF PCB inspection. This material is different from standard FR4, so the factory should have practical experience with Rogers high frequency laminates, not just general PCB production ability. When selecting a manufacturer, focus on these points:

High frequency material experience: The factory should be familiar with Rogers laminates used in RF, microwave, antenna, radar, and communication boards.
DFM review before production: Gerber files, stackup, line width, spacing, copper weight, drill size, and surface finish should be reviewed before fabrication. A clear DFM review helps reduce production risk before the board enters manufacturing.
Material and thickness confirmation: The supplier should confirm material grade, dielectric thickness, copper foil type, copper weight, and batch traceability. For RF boards, material consistency directly affects signal performance.
Impedance control ability: The factory should support impedance calculation, stackup review, and impedance testing when required. Stable impedance control helps maintain predictable RF transmission.
Controlled drilling and etching: PTFE-based laminates need careful drilling and line width control. Good process control helps reduce hole defects, trace variation, and dimensional issues.
Suitable surface finish selection: ENIG, immersion silver, OSP, tin, and other finishes may be used. The surface finish should match soldering needs, RF contact areas, storage time, and assembly process.
Inspection and testing: AOI, electrical testing, dimensional inspection, and impedance testing should be available when needed. For high frequency PCB fabrication, visual inspection alone is not enough.
PCB fabrication and PCBA support: If the project also needs assembly, a manufacturer with PCB fabrication, component sourcing, SMT assembly, testing, and final inspection can make the project easier to manage.

FAQs About RT 5880 PCB

Q1: Is RT 5880 a good material for antenna PCB designs?
A1: Yes. RT 5880 is often used for antenna PCB designs because it has a low dielectric constant and very low dielectric loss. Its design Dk is 2.20, which helps antenna traces and feed lines maintain more predictable RF behavior.

Q2: Can RT 5880 be used for multilayer PCB structures?
A2: Yes, it can be used in multilayer PCB builds, especially when the stackup needs low-loss RF layers. The bonding material, dielectric spacing, copper weight, and lamination process should be reviewed carefully before production.

Q3: What is the main difference between RT/duroid 5870 and 5880?
A3: RT/duroid 5870 and 5880 are related high frequency laminates, but their electrical values are different. RT/duroid 5870 has a design Dk of 2.33 and a dissipation factor of 0.0012 at 10 GHz. RT/duroid 5880 has a design Dk of 2.20 and a dissipation factor of 0.0009 at 10 GHz.

Q4: What copper foil is commonly used with RT 5880 material?
A4: RT 5880 is commonly supplied with electrodeposited copper or rolled copper. Standard copper claddings include 1/2 oz and 1 oz copper foil. The final selection depends on RF performance needs, line width control, current demand, and fabrication requirements.

Q5: Why does RT 5880 cost more than standard FR4?
A5: RT 5880 costs more because it is a specialty PTFE-based high frequency laminate. Price is affected by dielectric thickness, copper foil type, copper weight, board size, layer count, yield, testing needs, and material lead time.

Q6: What files are needed for an RT 5880 PCB quotation?
A6: A useful quotation usually needs Gerber files, stackup details, board size, quantity, copper weight, surface finish, dielectric thickness, impedance requirements, and testing requirements.

Q7: Which surface finish is suitable for RT 5880 PCB?
A7: ENIG, immersion silver, OSP, tin, and other finishes may be used. The right finish depends on soldering process, storage time, RF contact area, assembly method, and final application environment.

Q8: When should FR4 not be used instead of RT 5880?
A8: FR4 may not be suitable when the board needs low insertion loss, stable Dk, predictable phase behavior, or repeatable high frequency performance. For RF, microwave, radar, and antenna circuits, RT 5880 is often a better material choice.

Conclusion

RT 5880 is a strong material choice for high frequency PCB designs that need low loss, stable Dk, controlled impedance, and reliable RF performance. From antenna boards and radar modules to microwave circuits and broadband communication products, the final PCB result depends not only on the laminate itself, but also on stackup review, fabrication control, testing, and assembly quality.

Looking for a dependable partner for your RT 5880 PCB project? EBest can support high frequency PCB fabrication, DFM review, material confirmation, stackup guidance, impedance control, inspection, and PCBA assembly. Send your Gerber files, stackup, quantity, and technical requirements to sales@bestpcbs.com. Our team will review your project and provide a practical quotation for your next build.

RO4450F Prepreg for High Frequency Multilayer PCB Stackup

May 25th, 2026

Is RO4450F the right prepreg for your high frequency multilayer PCB stackup? In RF, microwave, and high speed digital boards, RO4450F works as a bonding layer that helps connect layers while keeping dielectric spacing more predictable.

This guide explains what this Rogers bondply is, how thick it is, what Dk value should be used, how it affects impedance control, and what fabrication points should be reviewed before production.

What Is RO4450F Prepreg?

RO4450F is a Rogers high frequency thermoset prepreg, also called bondply. It is used to bond layers together in multilayer PCB structures, especially when RO4000 series laminates are used in RF or microwave boards.

It is different from a copper clad core. A core already has copper on one or both sides, while prepreg is placed between layers during lamination. During pressing, the resin softens, fills around copper patterns, and bonds the stack together.

In practical PCB design, this material is often used with Rogers high frequency laminates such as RO4003C, RO4350B, RO4835, RO4350G2, and RO4000 LoPro materials. RO4400 bondply materials are designed for RO4000 multilayer constructions.

Why Is RO4450F Important in High Frequency Multilayer PCB Stackup?

A high frequency multilayer PCB does not rely only on the core material. The prepreg layer also becomes part of the electrical structure, especially when signal layers are close to reference planes. RO4450F helps define dielectric spacing, bonding quality, and stackup consistency.

In RF and microwave boards, small changes in dielectric height can affect impedance and signal behavior. A stable bonding layer helps the finished PCB stay closer to the intended stackup design after lamination.

RO4450F is also useful when the board has multiple signal layers, copper planes, and via transitions. It helps fill around etched copper patterns while supporting reliable layer adhesion.

For this reason, RO4450F should be reviewed together with the full stackup, including copper weight, dielectric spacing, impedance requirement, via structure, and final board thickness.

How Does RO4450F Work as a Bonding Layer in PCB Stackup?

In a PCB stackup, RO4450F is placed between copper layers, high frequency cores, or foil layers before lamination. During pressing, the resin flows around the copper pattern, fills small open areas, and bonds the layers into one multilayer board.

It bonds PCB layers: It joins high frequency cores, inner copper layers, and foil layers into a stable structure.
It forms a dielectric layer: After lamination, it becomes part of the dielectric path between conductors.
It affects pressed thickness: Final thickness depends on copper weight, copper distribution, and lamination conditions.
It supports copper pattern filling: Resin flow helps fill spaces around etched copper features.
It influences impedance: Its Dk and pressed thickness should be included in stackup calculation.
It supports multilayer reliability: Proper bonding helps improve layer adhesion and plated through hole stability.

RO4450F should be treated as both a bonding material and a functional dielectric layer. This makes it important for high frequency multilayer PCB stackup design.

How Thick is Rogers RO4450F?

Rogers RO4450F has a standard thickness of 0.0040 inch, about 0.102 mm. This is the value most designers check first when building a high frequency multilayer stackup.

In a real PCB build, pressed thickness can shift slightly because resin must fill the copper pattern. Copper weight, copper balance, plane coverage, etched area, and press cycle all affect the actual dielectric spacing.

Each 4 mil ply bonds to about 0.004 inch / 0.101 mm when pressed between flat opposing surfaces, while the thickness added to a multilayer construction depends on copper weight and distribution.

What is Dielectric Constant of RO4450F?

The dielectric constant of RO4450F is 3.52 ± 0.05 at 10 GHz in the z direction. This value is important because the bonding sheet is part of the RF dielectric path, not just a mechanical adhesive.

Dk affects signal velocity, controlled impedance, stripline trace width, layer spacing, and coupling between signal layers. If the wrong Dk is used in a field solver, the fabricated board may deviate from the intended impedance.

For accurate stackup review, the Dk value, copper roughness, copper thickness, trace geometry, and pressed dielectric spacing should be checked together.

How Does RO4450F Affect Impedance Control and Signal Stability?

RO4450F affects impedance because its dielectric constant and pressed thickness influence the distance between signal traces and reference planes. When this prepreg is close to an RF trace, it becomes part of the controlled impedance structure.

For stripline routing, the signal trace is usually buried between reference planes. If the bonding layer becomes thinner or thicker after lamination, the impedance value may shift. This is why pressed thickness should be checked before fabrication.

For RF and high speed boards, signal stability also depends on material loss. RO4450F has low loss behavior for high frequency use, but the final result still depends on trace geometry, copper thickness, copper roughness, surface finish, and via design.

Before production, the stackup should be reviewed with the actual dielectric height, Dk value, copper weight, line width, spacing, and impedance target. This helps the finished PCB meet the expected signal behavior more consistently.

Rogers RO4450F Datasheet Overview

The RO4450F datasheet should be read as a design and fabrication reference, not just a material label. The values below summarize important data for this Rogers bondply. Typical values should be verified again when preparing final production documents. Here is a table and PDF of Rogers RO4450F datasheet for your reference:

Parameter	Rogers RO4450F Typical Value
Material Type	High frequency thermoset bondply / prepreg
Standard Thickness	0.0040 in / about 0.102 mm
Dielectric Constant	3.52 ± 0.05 at 10 GHz
Dissipation Factor	0.004 at 10 GHz
Thermal Conductivity	0.65 W/m·K
Moisture Absorption	0.09%
Tg	>280°C
Td	390°C
CTE	X 19, Y 17, Z 50 ppm/°C
Flammability	UL 94 V-0
Lead-Free Process Compatibility	Yes

RO4450F Bondply Data Sheet-EBest Download

These values help designers review Dk, Df, thermal conductivity, Tg, Td, CTE, UL rating, and lead-free compatibility when preparing a high frequency multilayer PCB stackup.

Difference Between RO4450B and RO4450F Prepreg

RO4450B and RO4450F are both Rogers RO4400 series high frequency bondply materials. They are used as bonding layers in multilayer PCB stackups with RO4000 series laminates. The main difference is not their basic function, but their available thickness, dielectric value, and resin flow behavior.

Item	RO4450B	RO4450F
Material Family	Rogers RO4400 series bondply	Rogers RO4400 series bondply
Material Type	High frequency thermoset prepreg	High frequency thermoset prepreg
Main Function	Bonding layer for RO4000 multilayer PCB constructions	Bonding layer for RO4000 multilayer PCB constructions
Standard Thickness	0.0036 in / 0.091 mm and 0.0040 in / 0.101 mm	0.0040 in / 0.101 mm
Dielectric Constant	3.30 ± 0.05 or 3.54 ± 0.05 at 10 GHz, depending on thickness	3.52 ± 0.05 at 10 GHz
Dissipation Factor	0.004 at 10 GHz	0.004 at 10 GHz
Thermal Conductivity	0.60 W/m·K	0.65 W/m·K
Tg	>280°C	>280°C
Td	390°C	390°C
Z-Axis CTE	60 ppm/°C for 0.0036 in version; 50 ppm/°C for 0.0040 in version	50 ppm/°C
Flow Behavior	Standard RO4400 bondply flow behavior	Improved lateral flow capability
Fill Requirement	Suitable for standard RO4000 multilayer bonding structures	More suitable when the stackup has difficult fill requirements
Sequential Lamination	Supported by RO4400 bondply family	Supported by RO4400 bondply family
Lead-Free Process	Compatible	Compatible
Typical Use Direction	Existing or previously approved stackups	New stackups or designs needing better resin flow
Replacement Advice	Keep using it when the stackup is already verified	Review when better filling behavior is needed

The material data shows that RO4450B and RO4450F share the same high frequency bondply family, similar loss factor, high Tg, lead-free compatibility, and RO4000 multilayer compatibility. RO4450F is mainly highlighted for improved lateral flow capability, which makes it useful for new multilayer stackups or structures with more demanding fill requirements.

What Applications Use Rogers RO4450F PCB Material?

This prepreg is mostly used where the board needs multilayer construction and stable high frequency behavior. It is a practical fit for RF, microwave, and high speed interconnect boards that use Rogers RO4000 series cores.

RF communication modules: Used where low loss paths and controlled impedance are needed.
Microwave PCB assemblies: Supports multilayer routing and stable dielectric spacing.
Power amplifier PCBs: Helps create reliable RF stackups with controlled layer bonding.
Antenna module PCBs: Useful when the antenna feed structure needs repeatable dielectric behavior.
Small cell and DAS boards: Fits compact communication hardware with multilayer RF routing.
Backhaul radio boards: Supports high frequency paths in outdoor or telecom equipment.
Radar PCBs: Used in multilayer RF boards where material consistency matters.
Test and measurement boards: Helps maintain signal behavior in precision RF test hardware.
Mixed material multilayer PCBs: Suitable when high frequency cores and other materials must be laminated together.

Stackup and Lamination Considerations for RO4450F PCB Fabrication

A good build starts with a clear stackup, not with material selection alone. The prepreg must match the copper pattern, impedance target, via structure, and press cycle.

Copper thickness: Heavy inner copper needs careful fill review. RO4400 bondply materials can fill up to 0.0018 inch of total copper thickness, with more bondply needed when fill exceeds that range.
Copper distribution: Large plane areas and open etched areas can create uneven resin flow. Copper balance helps pressed thickness remain more consistent.
Layer count: Higher layer count boards may need a more detailed lamination plan, especially with buried copper and mixed materials.
Pressed thickness: Do not use nominal thickness alone for final impedance. Pressed dielectric height should be checked against copper pattern and fabrication tolerance.
Impedance coupon: RF and high speed boards should include a coupon plan when controlled impedance is required.
Inner layer treatment: Metal surfaces should receive a suitable oxide or oxide alternative treatment for better adhesion.
Press profile: A reduced viscosity range around 100°C to 120°C and bonding pressures commonly between 400 and 750 PSI may be used depending on fill needs.
Drilling and desmear: Multilayer RO4000 constructions may require desmear after drilling, while etchback of core and prepreg layers is not recommended.
Surface finish: ENIG, immersion silver, OSP, and other finishes should be selected according to RF performance, soldering needs, and storage conditions.
Batch repeatability: For production, stackup, material lot control, lamination records, impedance data, and inspection results should be documented.

Why Choose EBest for RO4450F Multilayer PCB Fabrication?

High frequency multilayer fabrication needs more than access to Rogers materials. It needs stackup review, DFM checking, impedance control, lamination control, drilling quality, inspection, and clear communication before production. Here are reasons why choose EBest for RO4450F multilayer PCB fabrication:

Rogers high frequency PCB fabrication: Support for RF, microwave, antenna, radar, communication, and high speed multilayer boards.
Stackup review before production: Review dielectric spacing, copper thickness, layer order, impedance targets, and final board thickness.
DFM checking: Check manufacturability risks in spacing, via structure, copper balance, annular ring, solder mask, and panel layout.
Impedance control: Support microstrip, stripline, differential pair, and RF trace requirements.
Mixed material PCB capability: Support Rogers materials with other PCB materials when the structure requires it.
Inspection and testing: AOI, electrical test, dimensional checks, and quality records for controlled production.
Prototype and batch support: Support small quantity validation and later volume production under the same fabrication control path.
PCBA service availability: PCB fabrication can be combined with component sourcing, SMT assembly, testing, and box build service when needed.

FAQs About Rogers RO4450F Prepreg

Q1: Can RO4450F be laminated with RO4350B or RO4003C?
A1: Yes. RO4450F is commonly used with Rogers RO4000 series high frequency laminates, including RO4350B and RO4003C. The final stackup should still be reviewed according to layer count, copper weight, dielectric spacing, and impedance target.

Q2: When should this Rogers bondply be considered for an RF multilayer PCB?
A2: It is suitable when the board needs stable dielectric spacing, controlled impedance, low signal loss, and reliable multilayer bonding. It is often used in RF, microwave, antenna, radar, and high speed communication boards.

Q3: Does one ply always provide enough resin fill?
A3: Not always. Resin fill depends on copper thickness, copper pattern density, open area, and lamination pressure. For heavy copper or uneven copper layouts, the stackup may need extra review before fabrication.

Q4: Will the final pressed thickness match the nominal thickness exactly?
A4: The nominal thickness is a starting value. The final pressed thickness may change slightly after lamination because resin flows around etched copper patterns. For controlled impedance boards, the calculation should use the reviewed fabrication stackup instead of only the nominal material value.

Q5: Can RO4450F replace RO4450B directly?
A5: It should not be replaced directly without review. RO4450F has improved lateral flow behavior, but replacement still needs checking for Dk, thickness, resin flow, impedance, and previous production approval.

Q6: Is this bondply suitable for sequential lamination?
A6: Yes. RO4400 series bondply materials can be used in multilayer structures that may involve sequential lamination. The press cycle, inner layer treatment, and total thermal history should be reviewed before production.

Q7: What may cause impedance deviation in this type of stackup?
A7: Common causes include pressed dielectric thickness variation, copper thickness tolerance, copper roughness, trace width deviation, resin flow change, and reference plane distance. A controlled stackup and impedance coupon can help reduce these risks.

Q8: Is standard FR4 prepreg a good substitute in RF layers?
A8: Usually not for controlled RF layers. Standard FR4 prepreg has different dielectric behavior and higher loss at high frequency. For RF paths, the bonding material should match the required Dk, Df, dielectric thickness, and impedance structure.

Q9: What should be prepared before requesting fabrication?
A9: Prepare Gerber files, stackup drawing, material callout, copper weight, finished board thickness, impedance requirements, surface finish, via structure, and estimated quantity. These details help the factory review manufacturability faster.

Q10: Can EBest support both PCB fabrication and assembly for this material?
A10: Yes. EBest can support Rogers high frequency PCB fabrication, DFM review, stackup checking, impedance control, PCB manufacturing, component sourcing, SMT assembly, testing, and production follow up.

Get a Fast Quote for RO4450F High Frequency PCB

Planning a Rogers high frequency multilayer PCB build? Send your Gerber files, stackup requirement, copper weight, impedance target, surface finish, and quantity to EBest for a fast fabrication review. Our team can support high frequency PCB fabrication, DFM checking, multilayer stackup review, impedance control, PCB manufacturing, PCB assembly, component sourcing, and production testing. Contact us at sales@bestpcbs.com to get a quotation for your next RF or high speed PCB project.

Rogers RO3010 High-Frequency PCB Material Guide

May 25th, 2026

Is RO3010 the right high-frequency material for a compact RF PCB? This guide explains the material in plain language, so you can read the datasheet with more confidence before PCB fabrication.

RO3010 is often selected when a circuit needs high dielectric constant, stable RF behavior, and a smaller board area. In this article, we will review its material structure, Dk, thickness, cost factors, applications, and manufacturing support.

RO3010, https://www.bestpcbs.com/blog/2026/05/ro3010/

What Is Rogers 3010 Material?

Rogers 3010 material usually refers to Rogers RO3010 laminate. It is a ceramic-filled PTFE composite circuit material designed for high-frequency PCB work. The material belongs to the Rogers RO3000 series, which is widely used for RF and microwave circuits.

In simple terms, it is not standard FR4. FR4 works well for many general electronic boards, while this Rogers material is used when signal stability, dielectric control, and low loss matter more.

The high dielectric constant helps reduce circuit size. This is useful for compact antennas, filters, RF modules, and microwave layouts where board space is limited.

This laminate also has low moisture absorption and controlled thermal expansion. These properties help the PCB keep stable electrical behavior under heat, humidity, and production stress.

Why Choose Rogers RO3010 for High-Frequency PCB Design?

This material is chosen when a PCB needs compact RF layout, stable high-frequency behavior, and better signal control than standard FR4. Its high Dk allows shorter trace structures, while its low loss helps RF signals pass with less energy loss.

High Dk: Supports smaller RF layouts and compact antenna structures.
Low dissipation factor: Helps reduce signal loss at microwave frequency.
Stable CTE: Helps the board remain stable during thermal stress.
Good dimensional stability: Supports tighter line width and spacing control.
Multilayer support: Can support multilayer PCB builds when the stackup is reviewed carefully.
RF application fit: Suitable for RF modules, patch antennas, filters, and communication boards.

How Thick Is the RO3010?

The standard laminate thicknesses of RO3010 include 0.005 in, 0.010 in, 0.025 in, and 0.050 in. These are about 0.13 mm, 0.25 mm, 0.64 mm, and 1.28 mm.

The correct thickness depends on the impedance target, copper weight, working frequency, RF trace width, and board stackup. A thinner substrate may suit some high-frequency layouts, while a thicker substrate may fit other impedance or mechanical needs.

Thickness should not be selected only from a catalog. In high-frequency work, even a small thickness change can affect impedance, phase, and antenna behavior.

For PCB fabrication, it is better to send Gerber files, stackup notes, impedance requirements, and copper weight together. This helps the manufacturer review material fit before production.

RO3010 thickness, https://www.bestpcbs.com/blog/2026/05/ro3010/

What Is the Dielectric Constant of RO3010?

RO3010 has a process Dk of 10.20 ± 0.30 at 10 GHz and a design Dk of 11.20. The process Dk helps explain material test data, while the design Dk is more useful for circuit calculation.

This high Dk is the main reason many RF layouts use this substrate. A higher Dk allows the same circuit function to fit into a smaller board area.

Dk also affects impedance, signal velocity, antenna size, and phase behavior. For this reason, the stackup and trace width should be reviewed before fabrication.

Do not treat Dk as a single number without context. Copper thickness, dielectric height, surface finish, etching control, and layout geometry can all change the final PCB result.

Rogers RO3010 Datasheet Overview

The RO3010 datasheet gives the basic material values needed for RF PCB design and fabrication review. And the relevant tables and PDF documents from the Rogers RO3010 datasheet are listed below for your reference.

Item	Typical Value
Material type	Ceramic-filled PTFE composite
Process Dk	10.20 ± 0.30 at 10 GHz
Design Dk	11.20
Dissipation factor	0.0022 at 10 GHz
Thermal coefficient of Dk	-395 ppm/°C
Moisture absorption	0.05%
Thermal conductivity	0.95 W/m/K
X/Y/Z CTE	13 / 11 / 16 ppm/°C
Copper peel strength	9.4 lb/in
Density	2.8 g/cm³
Flammability rating	UL 94 V-0
Lead-free process compatible	Yes

RO3010 Laminate Data Sheet-EBest Download

These values are useful for material review, but final PCB performance still depends on stackup, etching control, lamination, drilling, plating, and inspection.

Rogers RO3010 vs RO3003 vs RO3006: What Is the Difference?

RO3003, RO3006, and RO3010 are ceramic-filled PTFE materials in the same series. The main difference is Dk. Lower Dk gives larger circuit size and often lower loss, while higher Dk supports more compact RF layout.

Item	RO3003	RO3006	RO3010
Material family	RO3000 series	RO3000 series	RO3000 series
Material type	Ceramic-filled PTFE composite	Ceramic-filled PTFE composite	Ceramic-filled PTFE composite
Process Dk	3.00 ± 0.04	6.15 ± 0.15	10.20 ± 0.30
Design Dk	3.16	6.40	11.20
Dissipation factor	0.0010 at 10 GHz	0.0020 at 10 GHz	0.0022 at 10 GHz
Thermal coefficient of Dk	-3 ppm/°C	-262 ppm/°C	-395 ppm/°C
Water absorption	0.04%	0.02%	0.05%
Thermal conductivity	0.50 W/m/K	0.79 W/m/K	0.95 W/m/K
X/Y/Z CTE	17 / 16 / 25 ppm/°C	17 / 17 / 24 ppm/°C	13 / 11 / 16 ppm/°C
Copper peel strength	12.7 lb/in	7.1 lb/in	9.4 lb/in
Density	2.1 g/cm³	2.6 g/cm³	2.8 g/cm³
Flammability rating	UL 94 V-0	UL 94 V-0	UL 94 V-0
Lead-free process compatible	Yes	Yes	Yes

RO3003 is often used when low loss and wider RF structures are preferred. RO3006 sits in the middle. The high-Dk grade in this comparison is more suitable when small circuit size is a major goal.

What Design Factors Affect Rogers RO3010 PCB Performance?

Good material selection is only the first step. The final board result also depends on how the layout and fabrication rules are controlled.

Dielectric thickness: It directly affects impedance and trace size.
Copper weight: It changes trace height, etching behavior, and RF loss.
Trace geometry: RF trace width, spacing, bends, and ground shape need careful control.
Copper roughness: Rough copper can increase conductor loss at high frequency.
Via structure: Via size, stub length, plating, and grounding vias affect RF return path.
Stackup design: Hybrid builds with FR4 or other materials need thermal and mechanical review.
Surface finish: ENIG, immersion silver, or other finishes should match RF needs and assembly flow.
Fabrication tolerance: Line width, spacing, registration, drilling, and plating control all matter.
Testing plan: Electrical test, impedance test, AOI, and visual inspection help confirm build quality.

What Applications Use Rogers RO3010 Substrate?

This substrate is used where high-frequency signals, compact layout, and material stability matter. It appears in antenna systems, communication systems, compact RF modules, and microwave boards.

RF antenna PCB
Patch antenna
GPS antenna board
Microwave circuit board
RF filter board
Satellite communication module
Cellular communication antenna
Broadband RF component
Cable system datalink board
Automotive radar-related RF board
Wireless communication module
High-frequency test board

For many of these uses, standard FR4 may not provide enough Dk stability or low-loss behavior at higher frequency. This high-Dk substrate gives a more suitable base for RF signal control.

How Much Does Rogers RO3010 PCB Material Cost?

The material cost is not a fixed number. The ro3010 price changes with laminate thickness, copper cladding, panel size, stock status, order quantity, and fabrication requirements.

The final PCB price also depends on board size, layer count, hole structure, impedance tolerance, surface finish, testing method, and delivery schedule. A simple 2-layer RF board and a multilayer RF board will not have the same cost level.

Material waste is another factor. If the board outline does not fit the panel size well, usable panel area may drop and cost can rise.

For a more accurate quote, prepare Gerber files, stackup, material thickness, copper weight, surface finish, quantity, and test requirements. These details allow a PCB manufacturer to calculate the cost more clearly.

How Can EBest Circuit Support Rogers RO3010 PCB Manufacturing?

EBest Circuit can support this type of RF PCB project from material review to production-quality fabrication. For RF boards, early technical review helps reduce impedance drift, layout risk, and manufacturing uncertainty before production begins.

Material selection review for Rogers high-frequency laminates
Stackup planning based on frequency, impedance, copper weight, and board thickness
DFM review before fabrication to find spacing, via, copper, and panelization issues
Controlled impedance fabrication for RF traces and transmission lines
Rogers PCB fabrication for prototypes, small batches, and volume production
Surface finish support such as ENIG, immersion silver, and other project-based finishes
AOI, electrical test, visual inspection, and impedance test support
Component sourcing and PCBA assembly for complete electronics manufacturing needs
Production traceability for material batch, process flow, inspection, and shipment records

RO3010 PCB, https://www.bestpcbs.com/blog/2026/05/ro3010/

FAQs About Rogers RO3010 PCB Material

Q1: Is Rogers 3010 the same material as RO3010?
A1: Yes. Rogers 3010 usually refers to Rogers RO3010, a ceramic-filled PTFE high-frequency laminate in the RO3000 series. It is mainly used for RF, microwave, antenna, and compact high-frequency PCB designs.

Q2: Which Dk value should be used for RF circuit calculation?
A2: For design work, the more useful value is usually the design Dk of 11.20. The material also has a process Dk of 10.20 ± 0.30 at 10 GHz. In practical PCB fabrication, the final impedance result also depends on dielectric thickness, copper weight, trace width, and process tolerance.

Q3: What thicknesses are commonly available for this laminate?
A3: Common thicknesses include 0.005 in, 0.010 in, 0.025 in, and 0.050 in, which are about 0.13 mm, 0.25 mm, 0.64 mm, and 1.28 mm. The right thickness should match the target impedance, frequency, copper thickness, and stackup structure.

Q4: Why is this material often used for compact RF circuits?
A4: It has a high dielectric constant, so RF structures can be made smaller than many lower-Dk materials. Its design Dk of 11.20 helps reduce circuit size, which is useful for compact antennas, filters, microwave modules, and space-limited RF boards.

Q5: Can it be used for multilayer PCB fabrication?
A5: Yes. It can be used in multilayer PCB structures, but the stackup needs careful review. The manufacturer should check bonding material, lamination flow, drilling quality, copper plating, and impedance control before production.

Q6: Is it better than standard FR4?
A6: It depends on the application. For general electronic boards, FR4 is still practical and cost-friendly. For high-frequency circuits, this material provides better RF stability because it offers high Dk, low dissipation factor, and more stable high-frequency behavior than standard FR4.

Q7: What mainly affects PCB price for this material?
A7: The final price is affected by laminate thickness, copper weight, board size, layer count, impedance tolerance, surface finish, testing requirements, material availability, and lead time. A 2-layer RF board and a complex multilayer RF board will have very different costs.

Q8: What files should be prepared before requesting a quote?
A8: For a faster and more accurate quote, prepare Gerber files, stackup details, material thickness, copper weight, surface finish, quantity, impedance requirements, and test requirements. These details help the PCB manufacturer review manufacturability and calculate cost more accurately.

Q9: Can this laminate be combined with FR4 in a hybrid PCB stackup?
A9: Yes, hybrid stackups are possible. However, this laminate and FR4 have different material behavior, so the board needs review for thermal expansion, bonding reliability, drilling parameters, registration accuracy, and lamination control.

Q10: When should I choose this material instead of RO3003 or RO3006?
A10: Choose it when the design needs higher Dk and smaller RF circuit size. RO3003 is better for lower-Dk, low-loss RF layouts, while RO3006 sits between RO3003 and the high-Dk grade. This material is more suitable for compact RF antennas, filters, and microwave circuit boards.

Conclusion

Rogers RO3010 is a strong choice for high-frequency PCB projects that need high Dk, compact RF layout, stable signal transmission, and precise fabrication control. However, good material alone does not guarantee good board performance. The final result depends on thickness selection, copper weight, stackup design, impedance control, drilling quality, surface finish, and inspection process.

Ready to turn your Rogers RO3010 design into a reliable PCB? Send your Gerber files, stackup details, material thickness, copper weight, impedance requirements, quantity, and delivery needs to sales@bestpcbs.com. EBest Circuit can support your project with DFM review, material selection guidance, controlled impedance PCB fabrication, RF PCB manufacturing, testing, and production traceability. Get a clear quotation and practical manufacturing suggestions before your next build starts.

What Are Circuit Boards Made Of? PCB Materials Explained

May 25th, 2026

What are circuit boards made of? Circuit boards are made of copper, insulating base materials, resin, glass fiber, solder mask, silkscreen, and surface finishes that work together to carry signals, support components, and protect the circuit. This article explains the main PCB materials, how they affect board performance, and how to choose the right material for different applications.

Choosing the right circuit board material is also the first step toward reliable PCB and PCBA production. At EBest Circuit, we help customers review PCB materials, stackup, copper thickness, surface finish, DFM risks, component sourcing, assembly process, and testing needs before production starts. If you want a board that matches your electrical, thermal, and assembly requirements, pls feel free to send your Gerber files and project details to sales@bestpcbs.com for engineering support.

What Are Circuit Boards Made Of?

What are circuit boards made of? Most circuit boards use an insulating base, copper, resin, glass fiber, solder mask, silkscreen ink, and surface finish. These materials work together to support components, carry signals, control heat, and protect the circuit.

For many standard PCBs, the main base material is FR4. FR4 combines woven glass fiber with epoxy resin. This structure gives the board strength, insulation, and stable performance.

However, not every PCB uses the same material. A simple consumer PCB may use standard FR4. A high frequency board may need Rogers or PTFE based material. A power LED board may need an aluminum or copper core. Therefore, the right material depends on the final application.

In simple terms, a circuit board is not made from one material. It is a layered structure. Each layer has a clear job.

Core PCB Raw Materials

A printed circuit board usually contains several main raw materials. Each one affects performance, cost, and reliability.

PCB Material	Main Function
Base substrate	Supports the board and insulates copper layers
Copper foil	Creates traces, pads, planes, and vias
Resin	Bonds the material and improves insulation
Glass fiber	Adds strength and dimensional stability
Prepreg	Bonds layers in multilayer PCBs
Solder mask	Protects copper and prevents solder bridges
Silkscreen	Marks component names, polarity, and positions
Surface finish	Protects exposed copper pads before assembly

Copper gives the PCB its electrical path. Resin and glass fiber form the base structure. Meanwhile, solder mask protects the copper pattern during soldering and long term use.

Also, surface finish matters. It keeps copper pads from oxidizing and helps components solder well during PCBA assembly.

How Copper, Resin, and Glass Work Together

Copper, resin, and glass fiber form the heart of many circuit boards.

Copper carries current and signals.

PCB manufacturers laminate copper foil onto the base material. Then they etch it into traces, pads, and copper planes. In multilayer boards, copper also forms power layers, ground layers, and signal layers.

Resin bonds and insulates the board.

Resin holds the glass cloth and copper structure together. It also insulates different copper layers. Because of this, resin quality affects heat resistance, moisture resistance, and electrical reliability.

Glass fiber adds mechanical strength.

Glass cloth helps the board stay flat and stable. It also reduces warpage during fabrication and soldering. As a result, the PCB can handle drilling, plating, routing, and assembly more reliably.

Together, these three materials decide many PCB properties. For example, they affect board thickness, impedance, thermal expansion, and long term durability.

PCB Laminate and Prepreg

PCB laminate is the base sheet used to make a circuit board. A common laminate is copper clad FR4. It includes copper foil, epoxy resin, and glass cloth.

Laminate quality directly affects the final PCB. It can influence heat resistance, drilling quality, copper adhesion, impedance control, and dimensional stability.

For multilayer PCBs, manufacturers also use prepreg. Prepreg is glass cloth soaked with semi cured resin. During lamination, heat and pressure make the resin flow. Then it bonds the PCB layers together.

Prepreg is important because it controls:

Layer bonding strength
Dielectric spacing
Final board thickness
Impedance stability
Resin flow around copper
Multilayer reliability

Therefore, prepreg is not just “glue.” It is a key dielectric material in multilayer PCB stackups.

Common PCB Material Types

Different products need different PCB materials. The table below shows common options.

PCB Material	Common Use	Main Benefit
Standard FR4	Consumer electronics, control boards	Good cost and balanced performance
High Tg FR4	Automotive, industrial, lead free assembly	Better heat resistance
Polyimide	Flexible PCB, rigid flex PCB	Flexible and heat stable
PTFE / Rogers	RF, microwave, antenna PCB	Low signal loss
Aluminum Core PCB	LED lighting, power modules	Better heat dissipation
Copper Core PCB	High power LED, automotive lighting	Strong thermal spreading
Ceramic PCB	Power electronics, harsh environments	High thermal conductivity

FR4 works well for many standard products. However, high power, high speed, or high temperature designs often need better material.

For example, RF circuits need stable Dk and low Df. LED boards need strong heat dissipation. Flexible electronics need polyimide. Therefore, material choice should follow the product function, not only the price.

Key PCB Material Properties

When engineers choose PCB materials, they often review several key properties.

Tg: Glass Transition Temperature
Tg shows when the material starts to soften. A higher Tg helps the board handle heat during lead free soldering and operation.

Td: Decomposition Temperature
Td shows when the material starts to break down. Higher Td gives better thermal safety.

CTE: Coefficient of Thermal Expansion
CTE shows how much the material expands when temperature changes. Lower and stable CTE helps protect plated holes and multilayer structures.

Dk: Dielectric Constant
Dk affects signal speed and impedance. High speed and RF boards need controlled Dk values.

Df: Dissipation Factor
Df affects signal loss. Lower Df helps high frequency signals travel with less loss.

Copper Thickness
Copper thickness affects current capacity and heat. Power boards often need thicker copper, while fine line boards may need thinner copper for accurate etching.

Peel Strength
Peel strength shows how well copper bonds to the base material. Good peel strength helps prevent copper lifting during soldering and use.

These properties help engineers avoid material mismatch. In addition, they help manufacturers control reliability before production starts.

What Are Green Circuit Boards Made Of?

Green circuit boards are not green because of the base material. The green color usually comes from green solder mask.

Solder mask covers most copper areas on the PCB. It protects copper from oxidation, dust, moisture, and solder bridging. It also gives the board a cleaner surface for assembly and inspection.

Although green is the most common color, PCB solder mask can also be black, blue, red, white, yellow, or matte colors. However, the color does not always show the base material. A green PCB may still use FR4, high Tg FR4, polyimide, or another substrate.

So, when customers ask what green circuit boards are made of, the answer is simple: the green layer is solder mask, while the main board structure usually includes copper, resin, and glass fiber.

How to Choose Circuit Board Material

Choosing the right circuit board material starts with the product requirement. Cost matters, but function comes first.

Before selecting a PCB material, engineers should check:

Operating temperature
Board thickness
Copper thickness
Current load
Signal speed
Frequency range
Heat dissipation needs
Flexibility requirements
Assembly process
Reliability standard
Production quantity

For standard electronics, FR4 often works well. For higher heat, high Tg FR4 is safer. For RF and microwave circuit boards, low loss materials may be necessary. For LED and power boards, aluminum core, copper core, or ceramic materials can improve heat transfer.

Also, do not choose material only by datasheet values. The PCB stackup, copper design, drilling process, surface finish, and assembly process also affect final performance.

A professional PCB manufacturer can help review the stackup, impedance, copper weight, base material, surface finish, and DFM risks before fabrication. This step saves time and reduces production problems.

FAQs About What Circuit Boards Are Made Of

Q1: What are printed circuit boards made of?
A1: Printed circuit boards are usually made of base substrate, copper foil, resin, glass fiber, solder mask, silkscreen, and surface finish. Standard rigid PCBs often use FR4.

Q2: What are PCB boards made of?
A2: PCB boards use insulating materials and conductive copper layers. The insulating material may be FR4, high Tg FR4, polyimide, PTFE, ceramic, aluminum core, or copper core material.

Q3: What are circuit board traces made of?
A3: Circuit board traces are made of copper. These copper paths connect components and carry signals or power across the PCB.

Q4: What plastic are circuit boards made of?
A4: Most circuit boards are not made of ordinary plastic. Many standard PCBs use glass fiber reinforced epoxy resin, also called FR4.

Q5: What are circuit board pins made of?
A5: Circuit board pins usually come from connectors or components. They often use copper alloy with tin, nickel, or gold plating.

Q6: Are all circuit boards made from FR4?
A6: No. FR4 is common, but not universal. High frequency boards may use Rogers or PTFE materials. LED boards may use metal core materials. Flexible boards often use polyimide.

Q7: What are cell phone circuit boards made of?
A7: Cell phone PCBs often use thin multilayer materials, fine copper traces, flexible polyimide circuits, and high density interconnect structures.

Q8: Why does PCB material selection matter?
A8: PCB material affects heat resistance, signal quality, soldering stability, mechanical strength, and long term reliability. Good material selection helps reduce production risk.

In conclusion, circuit boards are made from several materials, not one simple substance. Copper creates the electrical paths. Resin and glass fiber build the base structure. Laminate and prepreg form the PCB stackup. Solder mask, silkscreen, and surface finish protect the board and support assembly.

For simple products, standard FR4 may be enough. However, high speed, high power, RF, medical, automotive, and industrial products often need more careful material selection.

Need help choosing the right PCB material? Send your Gerber files, stackup, BOM, and application details to EBest Circuit. Our team can support PCB material review, DFM analysis, PCB fabrication, component sourcing, PCBA assembly, testing, and turnkey production. Pls feel free to contact us at sales@bestpcbs.com for a quotation.

Shengyi S1150G: Halogen-Free Tg150 FR4 PCB Material

May 22nd, 2026

Are you choosing S1150G for a halogen-free Tg150 FR4 PCB material but still unsure about its Tg value, datasheet properties, and real PCB applications? Shengyi S1150G is a practical mid-Tg FR4 material for projects that require halogen-free performance, lead-free process compatibility, and stable PCB fabrication.

This guide explains what this material is, how to read its datasheet, why Tg150, Tg155, and Tg160 may appear in different material references, whether HF means high-frequency, and how this laminate compares with standard FR4. It also shows where this material is commonly used and how EBest can support PCB fabrication from material review to finished board delivery.

S1150G, https://www.bestpcbs.com/blog/2026/05/s1150g/

What Is Shengyi S1150G PCB Material?

Shengyi S1150G is a halogen-free, lead-free compatible FR4 PCB material from Shengyi Technology. It belongs to the rigid PCB material family and is commonly used when a project needs a practical balance of cost, thermal stability, and environmental compliance.

It is often described as a mid-Tg FR4 material. Its material data lists it as a halogen-free, mid-Tg material with Tg 155°C, Td 355°C, and Z-axis expansion of 2.8%.

Compared with common FR4, this laminate is a better fit for designs that need halogen-free material documentation and lead-free process compatibility. It is widely used in rigid PCB designs, including consumer electronics, LED electronics, automotive electronics, and communication equipment.

In PCB fabrication, the material should be checked together with the full board requirement. Board thickness, copper thickness, layer count, surface finish, soldering profile, and quality standards all affect the final result.

Features of S1150G Halogen-Free Tg150 FR4 PCB Material

This laminate is a useful choice for projects that need halogen-free FR4 with mid-Tg thermal performance. It supports common PCB production processes and fits many electronic products that need lead-free assembly compatibility.

Halogen-free material system
The material is described as free of halogen, antimony, and red phosphorus. This helps support halogen-free PCB requirements and cleaner material documentation.
Mid-Tg FR4 performance
The material is often searched as S1150G Tg 150, but its data lists Tg as 155°C by DSC.
Lead-free process compatibility
This FR4 grade is positioned as a lead-free compatible material, making it suitable for many modern PCB and PCBA production flows.
Good mechanical processability
It supports standard PCB drilling, routing, lamination, and finishing processes.
Thermal resistance for common PCB needs
Its data lists Td as 355°C, T260 as 60 minutes, and T288 as 45 minutes. These values support many lead-free PCB applications.
UL94 V-0 flame rating
Its material data lists flammability as V-0 under UL94 conditions.

Shengyi S1150G Datasheet Overview

The S1150G datasheet provides main thermal, electrical, and mechanical values for PCB material review. The table below lists common material data. Attached is a download link for Shengyi S1150G datasheet:

Property	Typical Value	Test Condition / Method
Tg	155°C	DSC, IPC-TM-650 2.4.25
Td	355°C	5% wt. loss, IPC-TM-650 2.4.24.6
Z-axis CTE before Tg	40 ppm/°C	IPC-TM-650 2.4.24
Z-axis CTE after Tg	230 ppm/°C	IPC-TM-650 2.4.24
Z-axis expansion, 50–260°C	2.8%	IPC-TM-650 2.4.24
T260	60 min	TMA, IPC-TM-650 2.4.24.1
T288	45 min	TMA, IPC-TM-650 2.4.24.1
Thermal Stress	>100s, no delamination	288°C solder dip, IPC-TM-650 2.4.13.1
Volume Resistivity	1.15E+08 MΩ·cm	After moisture resistance, IPC-TM-650 2.5.17.1
Surface Resistivity	9.61E+06 MΩ	After moisture resistance, IPC-TM-650 2.5.17.1
Arc Resistance	178s	D-48/50+D-4/23, IPC-TM-650 2.5.1
Dielectric Breakdown	45+ kV NB	D-48/50+D-4/23, IPC-TM-650 2.5.6
Dk at 1GHz	4.5	IPC-TM-650 2.5.5.9
Dk at 1MHz	4.8	IPC-TM-650 2.5.5.9
Df at 1GHz	0.011	IPC-TM-650 2.5.5.9
Df at 1MHz	0.009	IPC-TM-650 2.5.5.9
Peel Strength, 1oz HTE copper foil	1.5 N/mm	After thermal stress, 288°C / 10s
Flexural Strength, LW	630 MPa	IPC-TM-650 2.4.4
Flexural Strength, CW	480 MPa	IPC-TM-650 2.4.4
Water Absorption	0.10%	IPC-TM-650 2.6.2.1
Flammability	UL94 V-0	C-48/23/50 and E-24/125

Shengyi-TDS-1810-02-S1150G-S1150GB-EBest Download

What is the CTI Value of Shengyi S1150G?

The CTI value of Shengyi S1150G PCB laminate is no less than 600V and falls under Class 0 insulation grade. Its exceptional dielectric safety lays solid foundation for long-term stable operation in demanding electronic devices.

Class 0 qualification fully complies with stringent global safety standards, offering strong resistance against electric tracking under continuous high-voltage working conditions.

This high-performance substrate is widely deployed in high-voltage application areas, including industrial control systems, automotive electronics and primary power circuit designs.

It combines superior comparative tracking performance, remarkable CAF resistance and halogen-free material formula, balancing reliable operational capability and environmental compliance requirements.

What Is the Tg Value of Shengyi S1150G? Tg150, Tg155, or Tg160?

The practical answer is: Shengyi S1150G is commonly treated as a Tg150-class FR4 material, while its material data lists Tg as 155°C by DSC. This is why many people search for S1150G Tg 150 or Tg150 FR4.

The terms Tg150 and Tg155 are often used in the market to describe the same general material class. In formal material review, the exact test method matters. The Tg value is commonly listed as 155°C by DSC.

You may also see Tg160 in some material listings. This usually comes from a different test method, such as DMA, while DSC data may still show 155°C. The difference is related to test method rather than a simple material conflict.

For clearer documentation, it is better to write Shengyi S1150G or equivalent halogen-free FR4, Tg 155°C by DSC. This wording helps the PCB factory confirm the correct laminate and prepreg before production.

Is S1150G HF a High-Frequency Material?

No. S1150G HF is not a dedicated high-frequency PCB material. In PCB material naming, HF is often used to describe halogen-free laminates. For this laminate, that meaning is more accurate than treating it as an RF or microwave-grade material.

The material has Dk around 4.5 at 1GHz and Df around 0.011 at 1GHz. These values can support many standard FR4 PCB products, such as control boards, LED boards, automotive electronics, and general communication boards.

For RF antenna, radar, microwave, or very low-loss transmission applications, a dedicated RF laminate is usually a better choice. This product should be viewed as a halogen-free FR4 material with stable general-purpose PCB performance.

What Applications Use Shengyi S1150G PCB Material?

S1150G PCB material is used in many rigid PCB applications where halogen-free FR4, mid-Tg performance, and lead-free process compatibility are required. Typical application areas include consumer electronics, LED products, automotive electronics, communication equipment, and industrial control boards.

Consumer electronics PCB: Tablets, notebooks, smart devices, and other compact electronic products.
LED control PCB: LED drivers, lighting control boards, and lighting-related electronic assemblies.
Automotive electronics PCB: Selected automotive control boards and electronic modules after project review.
Communication equipment PCB: General communication products where dedicated low-loss RF material is not required.
Industrial control PCB: Control modules, interface boards, power management boards, and automation-related products.
Multilayer halogen-free PCB: Multilayer PCB fabrication when the stackup, prepreg, copper balance, and pressing process are properly controlled.

S1150G vs Standard FR4: What Is the Difference?

This material belongs to the FR4 family, but it offers a more specific material position than common FR4. Its value comes from halogen-free chemistry, mid-Tg performance, and lead-free process compatibility.

Item	Shengyi S1150G FR4	Standard FR4
Material type	Halogen-free mid-Tg FR4.1	General FR4 material family
Halogen-free status	Yes	Depends on selected grade
Tg value	155°C by DSC	Commonly varies by grade
Td value	355°C	Varies by grade
Lead-free process	Compatible	Must be confirmed
Dk / Df	Dk 4.5 and Df 0.011 at 1GHz	Varies by material system
Environmental positioning	Better fit for halogen-free requirements	Depends on material choice
Typical applications	Consumer, LED, industrial, automotive, communication PCB	General PCB production
Cost level	Usually higher than basic FR4	Usually lower
Best fit	Projects needing halogen-free FR4 and mid-Tg performance	Cost-sensitive common PCB projects

For projects with clear halogen-free requirements, FR4 S1150G is often a better fit than basic FR4. For simple boards without environmental material requirements, standard FR4 may still be enough.

S1150G vs Standard FR4, https://www.bestpcbs.com/blog/2026/05/s1150g/

How Does EBest Support S1150G PCB Fabrication?

EBest provides practical support for S1150G PCB fabrication, from material review to finished board delivery. Our goal is to help each project use the right material, reduce fabrication risk, and move smoothly from prototype to production.

Material review: We can check whether Shengyi S1150G matches the drawing requirement, Tg note, halogen-free requirement, lead-free process, board structure, and production target.
Free DFM review before fabrication: Our team reviews Gerber files, drill files, copper spacing, annular rings, solder mask clearance, routing design, panelization, and special fabrication notes before production starts.
Multilayer stackup support: For multilayer boards, we can help review layer structure, laminate and prepreg matching, copper balance, dielectric thickness, impedance needs, and lamination feasibility.
PCB fabrication from prototype to batch production: EBest supports prototype, small batch, and mass production, helping projects keep material choice, process control, and quality standards consistent.
Controlled PCB manufacturing process: We support drilling, copper plating, solder mask, surface finish, routing, electrical testing, and final inspection with process control suitable for halogen-free FR4 boards.
PCBA assembly and component sourcing: Beyond bare board fabrication, EBest can also provide component sourcing, SMT assembly, through-hole assembly, functional testing, and turnkey PCBA support.
Quality inspection and testing: Our quality process can include incoming material checks, AOI, electrical testing, impedance testing when required, X-ray inspection for assembled boards, and final quality inspection.
Traceability and production support: For industrial control, communication, automotive electronics, LED, and medical-related PCB projects, EBest can support production traceability and stable delivery from trial build to repeat orders.
One-stop technical response: If your drawing only says S1150G material or S1150G FR4, EBest can help confirm whether additional details are needed, such as Tg method, copper thickness, surface finish, soldering process, and environmental documentation.

S1150G PCB, https://www.bestpcbs.com/blog/2026/05/s1150g/

FAQs About Shengyi S1150G

Q1: Why is this laminate often selected for halogen-free PCB projects?
A1: It offers halogen-free chemistry, mid-Tg performance, and lead-free process compatibility. It is a practical FR4 choice for rigid PCBs that need cleaner material documentation and stable production performance.

Q2: Why do some drawings or searches call it S1150G Tg150?
A2: This material is often grouped into the Tg150-class FR4 category in the market. Its Tg is commonly listed as 155°C by DSC, while some references may show 160°C by DMA because of different test methods.

Q3: Which data matters when comparing this material with other FR4 materials?
A3: Useful data includes Tg, Td, T260, T288, Z-axis expansion, Dk, Df, water absorption, flame rating, and material compliance. These values help judge whether the laminate fits the product requirement.

Q4: Can this material support lead-free assembly?
A4: Yes. It is positioned as lead-free compatible FR4. The final result still depends on PCB thickness, copper design, moisture control, surface finish, and reflow conditions.

Q5: What file details help speed up an S1150G PCB quotation?
A5: Gerber files, stackup, finished board thickness, copper thickness, quantity, surface finish, solder mask color, impedance needs, assembly requirement, and any material certificates should be provided.

Q6: When should another material be considered instead of this laminate?
A6: Another material may be needed if the design requires lower dielectric loss, RF or microwave performance, higher Tg, special thermal conductivity, confirmed CTI grade, or project-specific approval.

Q7: What services can EBest provide for an S1150G PCB project?
A7: EBest can support PCB fabrication(including FR4 PCB, MCPCB, Ceramic PCB and so on), DFM review, multilayer PCB production, component sourcing, PCBA assembly, testing, and prototype-to-production support.

Get a Fast Quote for S1150G PCB

Looking for a reliable S1150G PCB fabrication partner for prototype, small batch, or production? Send us your Gerber files, stackup, board thickness, copper thickness, quantity, surface finish, and assembly requirements. EBest will review the material callout, check manufacturability, and provide a fast quotation with practical suggestions for PCB fabrication and assembly.

For faster support, email us at sales@bestpcbs.com. Our team will review your S1150G PCB requirements and help you move from material confirmation to finished board delivery with clear technical support and stable production control.

What is IPC 4101? IPC 4101 Standard & Specification

May 21st, 2026

What is IPC 4101, and why does it matter when a PCB stackup uses S1170G or another high Tg FR4 laminate? PCB material selection is not only about writing “FR4” on a fabrication drawing. A stable board depends on laminate type, prepreg, copper foil, Tg, CTE, resin system, glass style, board thickness, and thickness tolerance.

For example, when S1170G is reviewed for a high Tg FR4 PCB, the material data sheet should be read together with the related IPC 4101 requirement, stackup design, copper weight, and soldering profile.

This article explains IPC-4101 in a practical way. It covers the standard meaning, latest revision, material coverage, thickness tolerance, specification overview, slash sheet use, IPC-4101 vs IPC-4103, official PDF access, and common FAQ topics.

IPC 4101, https://www.bestpcbs.com/blog/2026/05/ipc-4101/

What Is IPC 4101?

IPC 4101 is a specification for base materials used in rigid and multilayer printed boards. The IPC-4101E-WAM1 table of contents states that this specification covers base materials called laminate or prepreg, used mainly for rigid or multilayer printed boards for electrical and electronic circuits.

In simple terms, IPC-4101 helps define what PCB laminate and prepreg should meet before they are used in production. It gives a shared material language for PCB designers, PCB factories, laminate suppliers, purchasing teams, and quality teams.

IPC-4101 is not the same as a complete finished PCB acceptance standard. It focuses on base materials, material callouts, laminate and prepreg classification, test references, thickness rules, cladding details, surface quality, and slash sheets.

For PCB projects, IPC 4101 is often used when a drawing must define material requirements more clearly than “FR4.” This matters for high Tg PCB, lead free assembly, multilayer PCB, controlled impedance PCB, industrial PCB, automotive PCB, and medical electronics PCB.

What Is the Current Version of IPC 4101?

The current IPC store listing shows IPC-4101E-WAM1 as the recent revision with Amendment 1. Public standards-store information states that IPC-4101E-WAM1 contains 70 individual specification sheets and covers laminate or prepreg materials listed after the main body of the standard.

IPC-4101E-WAM1 was published in April 2020, according to the public table of contents. This version follows earlier IPC 4101 B, IPC 4101 C, IPC 4101 D, and IPC 4101 E releases.

Older drawings may still mention IPC 4101 B, IPC 4101 C, or IPC 4101 E. That does not always mean the drawing should be changed automatically. Some long life products may need to keep the exact revision written in the approved drawing package.

For a new PCB build, the safer approach is to check the drawing note, purchase requirement, approved material list, and official IPC store page. If no revision is stated, confirm the required IPC-4101 version before production release.

What Materials Are Used in IPC 4101?

IPC 4101 covers PCB base materials, mainly laminate and prepreg for rigid and multilayer printed boards. These materials form the dielectric and bonding structure of the PCB, so they affect thermal resistance, dimensional behavior, copper bonding, and long term reliability.

Common material categories include:

Laminate materials used as rigid PCB cores.
Prepreg materials used as bonding layers in multilayer PCB lamination.
Clad laminate with copper foil bonded to one or both sides.
Unclad laminate used where copper foil is not part of the base material.
Glass reinforced epoxy systems often associated with FR4 style PCB materials.
High Tg FR4 systems for higher thermal demand and lead free soldering.
Polyimide materials for higher thermal resistance applications.
Cyanate ester materials for selected high performance PCB applications.
High speed or low loss materials when matched to the relevant slash sheet and material data sheet.
Copper foil cladding defined by type, nominal weight, or thickness.

The IPC-4101 callout structure includes material designator, specification sheet number, nominal laminate thickness, metal cladding type and weight or thickness, thickness tolerance class, and surface quality class.

What Are IPC 4101 Thickness Tolerance Requirements?

The IPC-4101E table of contents states that nominal laminate thickness is identified by four digits. For metric specification, 1500 means 1.5 mm. For Imperial units, the four digits indicate thickness in ten thousandths of an inch. Here are important thickness points:

State whether thickness is measured over copper or over dielectric.
Use the nominal laminate thickness code in the material callout.
Add the required thickness tolerance class.
Do not rely only on the phrase “standard tolerance.”
Check copper foil because copper weight changes final board thickness.
Review stackup thickness after lamination, especially for multilayer PCB.
For impedance control, review dielectric thickness, Dk, copper profile, and etching compensation.
For high Tg PCB, confirm that thermal performance and thickness control both match the production need.

For strict projects, the PCB drawing should state finished board thickness, tolerance, copper weight, stackup, controlled impedance data, laminate slash sheet, and acceptable material names.

What Does the IPC 4101 Specification Cover?

IPC 4101 should be read as a material control system rather than a simple material list. It uses a main standard plus slash sheets to describe laminate and prepreg requirements for different base material grades.

Item	Specification
Standard Name	Specification for Base Materials for Rigid and Multilayer Printed Boards
Current Listing	IPC-4101E-WAM1, Revision E with Amendment 1
Published Date	April 2020
Specification Sheets	70 individual specification sheets
Main Material Scope	Laminate and prepreg
Main PCB Use	Rigid and multilayer printed boards
Public TOC Value	Shows scope, classification, callout structure, nominal laminate thickness method, and specification sheet description
Official PDF Status	Paid standard from IPC official store or authorized standards seller

The public table of contents is useful for understanding structure, but it is not the full paid IPC 4101 PDF. For formal production, drawing approval, or audit records, use the official paid document.

How to Use IPC-4101 Slash Sheets for PCB Material Selection?

IPC-4101 slash sheets help PCB manufacturers match laminate and prepreg materials with specific performance requirements. When a drawing lists IPC-4101/99, IPC-4101/40, IPC-4101/98, or IPC-4101/126, the slash number points to a defined material category inside the IPC-4101 standard.

A slash sheet is not a single material brand. It is a material classification that must be checked together with the laminate supplier’s datasheet.

The chart below shows common IPC-4101 slash sheet search terms and public model references. It can help readers understand how slash sheets relate to real PCB laminate families, but it should not replace the official IPC document.

Search Term / Slash Sheet	Public Model Reference	Nominal Dk Shown	Material Description
IPC-4101E/29	N4000-13, N4000-13SI, N4103-13, N4203-13	3.60, 3.20	High speed, low loss, modified epoxy, flame rating 94 V-0
IPC-4101E/30	N5000, N5105, N5205, N5305	3.60	BT epoxy, flame rating 94 V-0
IPC 4101 40 / IPC-4101E/40	N7000-2HT, N7105-2 HT, N7205-2 HT	3.50	Non-MDA toughened polyimide, flame rating 94 V-0
IPC 4101 41 / IPC-4101E/41	N7000-3, N7105-3, N7205-3, N7305-3	3.50	Non-MDA toughened polyimide, flame rating 94 V-1
IPC-4101E/42	N7000-3F, N7105-3F, N7205-3F, N7305-3F	4.00	Non-MDA toughened and filled polyimide, flame rating 94 V-1
IPC 4101 98 / IPC-4101E/98	N4000-29, N4000-29NF, N4105-29, N4205-29	4.30	High Tg multifunctional epoxy, flame rating 94 V-0
IPC 4101 99 / IPC-4101E/99	N4000-29, N4105-29, N4205-29	4.30	Lead free, high Tg multifunctional epoxy, flame rating 94 V-0
IPC-4101E/102	Meteorwave 1000, 2000, 3000, 4000, 8000, 8300, M1 families	3.00 to 3.60 range shown	Very to extreme low loss PPE systems, flame rating 94 V-0
IPC-4101E/126	N4000-29, N4105-29, N4205-29	4.30	Lead free, high Tg multifunctional epoxy, flame rating 94 V-0
IPC-4101E/129	N4000-29, N4105-29, N4205-29	4.30	Lead free, high Tg multifunctional epoxy, flame rating 94 V-0

The AGC reference guide maps selected IPC-4101E slash sheets to public model references, nominal Dk values, and material descriptions. For example, IPC-4101E/126 and IPC-4101E/129 are shown with N4000-29, N4105-29, and N4205-29 references, nominal Dk 4.30, and a lead free high Tg multifunctional epoxy description.

For terms such as IPC 4101 21, IPC 4101 24, and IPC 4101 26, the exact material category should be confirmed in the official IPC-4101 PDF. Public material charts may not include every slash sheet.

Before approving a laminate, check the slash sheet together with Tg, CTE, Dk, Df, copper foil, thickness tolerance, flame rating, lead free soldering compatibility, and the approved material list.

What Is the Difference Between IPC-4101 and IPC-4103?

IPC-4101 and IPC-4103 both relate to PCB base materials, but their main use is different. IPC-4101 covers laminate and prepreg for rigid and multilayer printed boards, while IPC-4103 covers base materials for high speed and high frequency applications.

IPC-4103B covers high speed and high frequency performance plastic substrates used for printed boards for microstrip, stripline, high speed digital, and high frequency circuits. It also states that laminates controlled by this specification usually have a dissipation factor of less than 0.005 as a general guideline.

Item	IPC-4101	IPC-4103
Official Title	Specification for Base Materials for Rigid and Multilayer Printed Boards	Specification for Base Materials for High Speed/High Frequency Applications
Main Material Type	Laminate and prepreg	High speed and high frequency plastic substrates
Main PCB Use	Rigid and multilayer printed boards	Microstrip, stripline, high speed digital, and high frequency circuits
Current Public Revision	IPC-4101E-WAM1	IPC-4103B
Published Date Shown	April 2020	November 2017
Main Focus	Material grade, slash sheets, laminate thickness, cladding, and surface quality	High speed and high frequency material behavior
Typical Selection Need	FR4, high Tg FR4, polyimide, multilayer PCB base material control	RF PCB, high speed digital PCB, and microwave related material control

In practical PCB sourcing, IPC-4101 is used more often for general rigid and multilayer PCB base materials. IPC-4103 is more suitable when the circuit depends strongly on controlled Dk, Df, and high frequency behavior.

Where Can You Get the Official IPC-4101 PDF File?

The full IPC 4101 PDF is a paid standards document. Use the official IPC store or an authorized standards store rather than unofficial file sharing pages.

You can access it from or directly download via the following PDF file link:

IPC official store: use the IPC-4101E-WAM1 listing for Revision E with Amendment 1.
IPC public table of contents: use it to understand the scope, classification system, callout examples, nominal thickness method, and slash sheet structure. It is not the complete standard.
Authorized standards sellers: verify revision, language, license type, and PDF access terms before purchase.

TOC-IPC-4101E-EBest Download

Avoid unofficial “free IPC 4101 PDF” pages. They may be outdated, incomplete, or unauthorized, which can create confusion during material approval and quality review.

FAQs About IPC-4101

Q1: What document from the IPC 4101 standards will be used by a board fabricator to identify compatible materials for a PCB stackup?

A1: The fabricator will use the IPC-4101 slash sheets, the PCB drawing, stackup, approved material list, laminate supplier data sheet, and purchasing notes. Each specification sheet outlines requirements for laminate and prepreg for a product grade.

Q2: What does IPC 4101/121 Tg mean?

A2: It usually refers to the glass transition temperature requirement related to IPC-4101 slash sheet 121. The exact Tg value should be checked in the official IPC 4101 PDF and compared with the laminate supplier data sheet before approval.

Q3: What is IPC 4101/126 material?

A3: IPC 4101/126 material refers to a slash sheet material category under IPC-4101. A public AGC reference maps IPC-4101E/126 to N4000-29, N4105-29, and N4205-29, with nominal Dk 4.30 and a lead free high Tg multifunctional epoxy description.

Q4: What does IPC 4101/129 refer to?

A4: IPC 4101/129 is another IPC-4101 slash sheet reference. In the AGC public chart, IPC-4101E/129 is grouped with IPC-4101E/126 for N4000-29 related laminate and prepreg references.

Q5: What is IPC 4101 40?

A5: IPC 4101 40 is commonly used as a search form for IPC-4101/40. The AGC reference chart lists IPC-4101E/40 with N7000-2HT, N7105-2 HT, and N7205-2 HT, with a non-MDA toughened polyimide description.

Q6: What should be checked in IPC 4101/126 specification details?

A6: Check the official slash sheet, supplier data sheet, resin system, reinforcement, Tg, CTE, Dk, Df, copper cladding, dielectric thickness, flame rating, thermal resistance, and drawing notes. The slash sheet number alone is not enough for release.

Q7: Why does IPC 4101/126 z-axis CTE requirement matter?

A7: Z-axis CTE affects through-thickness expansion during soldering and thermal cycling. Better CTE control can help reduce stress on plated through holes, vias, and innerlayer connections in multilayer PCB use.

Q8: Is IPC 4101 FR4 the same as normal FR4?

A8: Not always. FR4 is a broad market term, while IPC 4101 adds a more controlled material classification through slash sheets, laminate and prepreg callouts, thickness tolerance, cladding, Tg, and material test references.

Conclusion

IPC 4101 gives PCB production teams a clear framework for laminate and prepreg selection. It helps replace vague material notes with a more controlled reference for rigid PCB, multilayer PCB, high Tg PCB, lead free compatible PCB, controlled impedance PCB, and other demanding PCB applications.

EBest Circuit can manufacture PCB boards that meet IPC 4101 Standard requirements. We can support FR4 PCB, high Tg PCB, multilayer PCB, heavy copper PCB, impedance controlled PCB, industrial control PCB, medical PCB, automotive electronics PCB, communication PCB, and related PCBA projects. Our services include material selection support, DFM review, stackup review, PCB fabrication, component sourcing, PCB assembly, testing, and traceability support.

For a quote on PCB boards built to IPC 4101 Standard material requirements, please send your Gerber files, stackup, drawings, BOM, and material notes to sales@bestpcbs.com.

Shengyi S1170G Halogen-Free High Tg FR4 PCB Laminate

May 21st, 2026

Can S1170G improve high Tg FR4 PCB reliability for your next electronic product? Shengyi S1170G is designed for projects that need halogen-free performance, lead-free process support, strong heat resistance, and stable rigid PCB fabrication.

This guide explains what this laminate is, what its datasheet shows, where it is commonly used, and how it differs from S1150G. It also shows how EBest supports PCB fabrication from material review to finished board delivery.

S1170G, https://www.bestpcbs.com/blog/2026/05/s1170g/

What is S1170G?

S1170G is a halogen-free, lead-free compatible FR4 PCB laminate from Shengyi Technology. It belongs to Shengyi’s rigid material family for FR-4.1 and FR-15.1 applications. The material is designed for printed circuit boards that require better heat resistance than mid-Tg FR4 laminates.

This laminate is free of halogen, antimony, and red phosphorus. It also supports lead-free processing, which makes it suitable for modern PCB production and PCBA assembly. Its high thermal rating helps the board maintain better dimensional stability during heat stress.

A major reason to use this material is its Tg 180°C by DMA rating. Shengyi also lists Td as 390°C, T260 as 60 minutes, and T288 as 60 minutes. These values help the material fit many multilayer boards and electronics exposed to lead-free soldering temperatures.

In practical PCB fabrication, material selection should be reviewed together with layer count, board thickness, copper weight, drill design, surface finish, and assembly process. A strong laminate needs a controlled production flow to deliver stable finished boards.

What Are Features of Shengyi S1170G?

This laminate is built for halogen-free PCB projects that need stronger heat resistance than common FR4. It is also useful when the board requires AOI compatibility, lower Z-axis expansion, and steady performance through lead-free assembly.

Halogen-free FR4 material: The laminate is free of halogen, antimony, and red phosphorus. This helps meet halogen-free PCB requirements and material compliance needs.
Lead-free process compatibility: It is designed for lead-free PCB production and assembly, supporting many modern electronics manufacturing flows.
Higher thermal performance: Shengyi lists Tg as 180°C by DMA, placing this laminate above mid-Tg FR4 materials.
Lower Z-axis CTE: Lower Z-axis expansion helps support plated through-hole reliability, especially in multilayer PCB fabrication.
UV blocking and AOI compatible: Shengyi lists UV Blocking/AOI compatibility as one of the material features, supporting inspection and production control.
Stable thermal resistance: The material data lists Td 390°C, T260 60 minutes, and T288 60 minutes, making it suitable for boards exposed to demanding thermal processes.
UL94 V-0 flame rating: Shengyi lists the material flammability rating as V-0, supporting common safety-related PCB requirements.

Shengyi S1170G Datasheet & Technical Specifications

The Shengyi S1170G datasheet provides thermal, electrical, and mechanical values for PCB material review. Below is a table and attached PDF file for Shengyi S1170G datasheet:

Property	Typical Value	Test Condition / Method
Tg	180°C	DMA, IPC-TM-650 2.4.24.4
Td	390°C	5% wt. loss, IPC-TM-650 2.4.24.6
Z-axis CTE before Tg	45 ppm/°C	IPC-TM-650 2.4.24
Z-axis CTE after Tg	210 ppm/°C	IPC-TM-650 2.4.24
Z-axis expansion, 50–260°C	2.3%	IPC-TM-650 2.4.24
T260	60 min	TMA, IPC-TM-650 2.4.24.1
T288	60 min	TMA, IPC-TM-650 2.4.24.1
Thermal Stress	Pass	288°C solder dip, IPC-TM-650 2.4.13.1
Volume Resistivity	5.65 × 10⁷ MΩ·cm	After moisture resistance, IPC-TM-650 2.5.17.1
Volume Resistivity	2.71 × 10⁷ MΩ·cm	E-24/125, IPC-TM-650 2.5.17.1
Surface Resistivity	5.99 × 10⁶ MΩ	After moisture resistance, IPC-TM-650 2.5.17.1
Surface Resistivity	4.44 × 10⁶ MΩ	E-24/125, IPC-TM-650 2.5.17.1
Arc Resistance	180 s	D-48/50 + D-4/23, IPC-TM-650 2.5.1
Dielectric Breakdown	45+ kV NB	D-48/50 + D-4/23, IPC-TM-650 2.5.6
Dk at 1GHz	4.4	RC52%, IPC-TM-650 2.5.5.9
Df at 1GHz	0.010	RC52%, IPC-TM-650 2.5.5.9
Peel Strength, 1oz HTE copper foil	1.3 N/mm	After thermal stress, 288°C / 10s
Peel Strength, 1oz HTE copper foil	1.1 N/mm	125°C
Flexural Strength, LW	550 MPa	IPC-TM-650 2.4.4
Flexural Strength, CW	450 MPa	IPC-TM-650 2.4.4
Water Absorption	0.12%	E-1/105 + D-24/23, IPC-TM-650 2.6.2.1
Flammability	UL94 V-0	C-48/23/50 and E-24/125

Shengyi_S1170G_Halogen_Free_High_Tg_FR4_PCB_Laminate-EBest Download

What Applications Use S1170G High TG FR4 PCB Material?

S1170G high TG FR4 PCB material is used where halogen-free chemistry, lead-free process support, and stronger heat resistance are needed. Common application areas include consumer electronics, smartphones, automotive electronics, computers, instruments, and multilayer PCB builds.

Automotive electronics PCB
Suitable for control modules, electronic units, and boards that need better heat resistance than standard FR4.
Industrial control PCB
Useful for control boards, automation modules, power management boards, and equipment that may face long operating cycles.
Consumer electronics PCB
Suitable for compact electronic products that need halogen-free FR4 and stable production performance.
Smartphone and handheld device PCB
Suitable for selected compact electronic boards where material compliance and process stability matter.
Computer and instrument PCB
Suitable for computing equipment, instruments, and measurement-related boards that need high thermal FR4 laminate.
Multilayer PCB fabrication
Its lower Z-axis expansion and high Tg rating make it suitable for multilayer structures when stackup and lamination are properly controlled.

Difference between S1170G vs S1150G

S1170G and S1150G are both Shengyi halogen-free FR4 materials, but they serve different thermal performance levels. S1170G is stronger for high Tg needs, while S1150G is a mid-Tg material for general halogen-free FR4 PCB fabrication.

Item	Shengyi S1170G	Shengyi S1150G
Material type	Halogen-free high Tg FR4	Halogen-free mid-Tg FR4
IPC sheet reference	IPC-4101/130	IPC-4101/128
UL ANSI type	FR-15.1	FR-4.1
Tg	180°C by DMA	155°C by DSC
Td	390°C	355°C
Z-axis CTE before Tg	45 ppm/°C	40 ppm/°C
Z-axis CTE after Tg	210 ppm/°C	230 ppm/°C
Z-axis expansion, 50–260°C	2.3%	2.8%
T260	60 min	>60 min
T288	60 min	45 min
Dk at 1GHz	4.4	4.5
Df at 1GHz	0.010	0.011
Water absorption	0.12%	0.10%
Flammability	UL94 V-0	UL94 V-0
Typical fit	Higher thermal stress, halogen-free boards	Mid-Tg halogen-free boards

S1170G gives higher Tg, higher Td, lower Z-axis expansion, and better T288 performance than S1150G. S1150G may still be practical when a mid-Tg halogen-free FR4 laminate is enough for the product requirement.

How Does EBest Support S1170G PCB Fabrication?

EBest supports S1170G PCB fabrication from material review to finished board delivery. Our service helps each project use the right laminate, reduce production risk, and move smoothly from sample build to batch production.

Material requirement review
We can check whether Shengyi S1170G matches the drawing note, high Tg requirement, halogen-free requirement, lead-free process, board thickness, and layer structure.
DFM review before production
Our team reviews Gerber files, drill files, copper spacing, solder mask clearance, annular rings, routing design, panelization, and special process notes before fabrication starts.
Multilayer stackup support
For multilayer PCB builds, we can review laminate and prepreg matching, dielectric thickness, copper balance, impedance needs, lamination feasibility, and warpage risk.
Sample to batch production
EBest supports sample runs, small batches, and mass production, helping keep material choice, process control, and quality standards consistent.
Controlled PCB manufacturing process
We support drilling, copper plating, solder mask, surface finish, routing, electrical testing, and final inspection for halogen-free FR4 boards with higher thermal requirements.
PCBA assembly and component sourcing
Beyond bare board fabrication, EBest can provide component sourcing, SMT assembly, through-hole assembly, functional testing, and turnkey PCBA support.
Quality inspection and testing
Our quality process can include incoming material checks, AOI, electrical testing, impedance testing when required, X-ray inspection for assembled boards, and final inspection.
Traceability and stable delivery
For automotive electronics, industrial control, medical-related electronics, communication equipment, and LED products, EBest can support production traceability and steady delivery from trial build to repeat orders.
Practical technical response
If your drawing only says FR4 S1170G or S1170G material, EBest can help confirm whether extra details are needed, such as Tg method, copper thickness, surface finish, soldering profile, impedance, and material documentation.

FAQs About Shengyi S1170G High Tg FR4 PCB Laminate

Q1: Why do many PCB drawings specify FR4 S1170G?
A1: FR4 S1170G is often used when a board needs halogen-free material, lead-free process support, and stronger heat resistance than mid-Tg FR4. It is suitable for rigid PCB designs that require stable performance through fabrication and assembly.

Q2: Is this laminate only used for demanding electronic products?
A2: Not only. It can be used in automotive electronics, industrial control, consumer electronics, computers, instruments, and multilayer PCB builds. The final choice depends on board structure, soldering process, thermal exposure, and documentation requirements.

Q3: Why does this laminate usually cost more than common FR4?
A3: This laminate offers higher Tg, halogen-free chemistry, stronger thermal resistance, and better suitability for lead-free processing. These material properties usually make it more expensive than basic FR4, but they can also support better production stability.

Q4: Can S1170G PCB material be used for multilayer boards?
A4: Yes. Its high Tg rating and controlled Z-axis expansion make it suitable for multilayer PCB fabrication. For better results, stackup, prepreg matching, copper balance, lamination, drilling, and final testing should be reviewed before production.

Q5: Does this laminate replace RF or microwave laminates?
A5: No.This material is a halogen-free high Tg FR4 laminate. For RF antenna, radar, microwave, or very low-loss signal applications, a dedicated low-loss laminate may be more suitable.

Q6: What should be checked before using this material?
A6: Board thickness, copper weight, layer count, Tg method, surface finish, impedance needs, soldering profile, testing requirements, and material documentation should be checked before production.

Q7: How is it different from S1150G in simple terms?
A7: S1170G has higher Tg, higher Td, lower Z-axis expansion, and better T288 performance. S1150G is a mid-Tg halogen-free FR4 laminate, while this material is better for builds that need stronger heat resistance.

Q8: What files should be sent for a fast S1170G PCB quote?
A8: Please send Gerber files, stackup, finished board thickness, copper thickness, quantity, surface finish, solder mask color, impedance needs, assembly details, and material certificate requirements.

Q9: Can EBest support both bare board fabrication and PCBA?
A9: Yes. EBest can support S1170G PCB fabrication, DFM review, multilayer PCB production, component sourcing, SMT assembly, through-hole assembly, testing, and prototype-to-production delivery.

Get a Fast Quote for S1170G PCB

Looking for a reliable S1170G PCB fabrication partner for halogen-free FR4 boards with higher thermal requirements? Send your Gerber files, stackup, board thickness, copper thickness, quantity, surface finish, and assembly requirements to sales@bestpcbs.com.

EBest will review the material callout, check manufacturability, and provide a fast quotation with practical suggestions for Shengyi S1170G PCB fabrication and assembly. From material confirmation to finished board delivery, our team helps keep your project clear, controlled, and ready for production.

RO4500 High-Frequency Laminate for Antenna PCB Design

May 19th, 2026

Is RO4500 the right high-frequency laminate for your antenna PCB design? If your project requires stable impedance, low signal loss, low PIM performance, and practical PCB fabrication, RO4500 is a material family worth reviewing carefully. This guide explains RO4500 material properties, datasheet values, laminate types, antenna applications, PTFE comparison, thickness selection, and design points for reliable RF PCB production.

RO4500, https://www.bestpcbs.com/blog/2026/05/ro4500/

What Is RO4500?

RO4500 is a high-frequency laminate series from Rogers Corporation, specifically designed for antenna PCB applications that require stable electrical performance, low insertion loss, low PIM response, and production repeatability. The RO4500 family includes three main types: RO4533, RO4534, and RO4535.

These ceramic-filled, glass-reinforced, hydrocarbon-based laminates offer controlled dielectric constant, low dissipation factor, and good passive intermodulation performance for reliable antenna circuits. For antenna PCB design, RO4500 significantly influences critical factors like impedance, wavelength, antenna size, signal loss, PIM behavior, copper selection, and final RF consistency.

A major advantage of RO4500 is its balance of RF performance and manufacturability: unlike many traditional PTFE-based laminates, it can be easily processed using standard PCB fabrication methods and high-temperature lead-free soldering processes.

What Are the Main Types of RO4500 Laminates?

The main RO4500 laminate types are RO4533, RO4534, and RO4535. They belong to the same antenna-grade material family, but each one supports slightly different RF design needs.

RO4533: Has the lowest Dk in the RO4500 family; suitable for antenna PCB designs that need a lower dielectric constant to support impedance control, antenna size adjustment, or specific RF signal behavior; lowest Dk option among common RO4500 laminates; suitable for antenna PCB designs requiring lower dielectric constant; helps support impedance control and antenna size adjustment; offers a low dissipation factor to reduce dielectric loss.

RO4534: A balanced option in the RO4500 series; provides a slightly higher Dk than RO4533 while still maintaining low-loss performance and stable antenna-grade characteristics; balanced dielectric constant and RF performance; suitable for general RF communication applications; maintains low-loss antenna-grade behavior; useful when the design needs a practical middle option between RO4533 and RO4535.

RO4535: Has the highest Dk among these three common RO4500 laminates; provides UL94 V-0 flame rating, making it suitable for antenna PCB projects where flame-retardant performance is required; highest Dk among RO4533, RO4534, and RO4535; suitable for compact antenna PCB layouts; provides UL94 V-0 flame-retardant performance; useful for applications that need both RF performance and flame rating compliance.

RO4500 High-Frequency Laminates Datasheet

The RO4500 datasheet is useful for evaluating whether the material matches a specific antenna PCB design. The most important values include dielectric constant, dissipation factor, PIM performance, thermal conductivity, Tg, flame rating, and lead-free compatibility. Below is a table and PDF for RO4500 high-frequency laminates datasheet:

Property	RO4533	RO4534	RO4535
Process Dk	3.30 ± 0.08	3.40 ± 0.08	3.44 ± 0.08
Design Dk	3.45	3.55	3.60
Df at 2.5 GHz	0.0020	0.0022	0.0032
Df at 10 GHz	0.0025	0.0027	0.0037
Typical PIM	Better than -155 dBc	Better than -155 dBc	Better than -155 dBc
Thermal Conductivity	0.6 W/m·K	0.6 W/m·K	0.6 W/m·K
Tg	>280°C	>280°C	>280°C
Flammability Rating	Non-FR	Non-FR	UL94 V-0
Lead-Free Compatible	Yes	Yes	Yes

RO4500 Series Cost Performance Antenna Grade Laminates Download

Rogers lists the RO4500 dielectric constant range as 3.3 to 3.5 ±0.08 and the dissipation factor range as 0.0020 to 0.0037 measured at 2.5 GHz. The datasheet also highlights low PIM response, standard PCB fabrication compatibility, good dimensional stability, and thermal performance.

Standard thickness options are also important:

RO4533: Commonly available in 0.020 in., 0.030 in., and 0.060 in.
RO4534: Commonly available in 0.020 in., 0.032 in., and 0.060 in.
RO4535: Commonly available in 0.020 in., 0.030 in., and 0.060 in.

Before production, laminate availability, copper type, panel size, and tolerance requirements should be confirmed.

What Are Applications of Rogers RO4500?

RO4500 is mainly used in antenna-related high-frequency PCB applications. It is especially suitable for wireless infrastructure and RF communication systems where material stability and production repeatability are required.

Common RO4500 applications include:

Base station antenna PCBs
Microstrip antenna circuits
WiMAX antenna networks
Wireless communication antenna systems
RF antenna modules
Distributed antenna systems
Commercial antenna products
Communication infrastructure equipment

In these applications, the PCB material must support predictable RF behavior. Antenna products often require stable impedance, controlled signal propagation, low dielectric loss, and reliable dimensional stability.

Why Is RO4500 Used for Antenna PCB Design?

RO4500 is widely adopted for antenna PCB design due to its optimal combination of antenna-grade RF performance and practical manufacturability. Specifically engineered to meet the demands of the antenna market, it offers stable electrical properties, low signal loss, and excellent low PIM performance, while being compatible with conventional PCB fabrication processes, eliminating the need for special treatment required by traditional PTFE-based laminates.

Controlled Dk for stable RF behavior: RO4500 has a controlled Dk range (3.3 to 3.5 ±0.08), which helps maintain predictable impedance and antenna dimensions, influences how RF energy travels through the board, and improves production consistency.
Low dissipation factor for reduced signal loss: With a dissipation factor range of 0.0020 to 0.0037 (measured at 2.5 GHz), RO4500 reduces dielectric loss, supporting better signal efficiency and overall antenna performance.
Low PIM potential for antenna systems: RO4500 delivers excellent passive intermodulation performance (better than -155 dBc under specified conditions), which is critical for cellular infrastructure and high-power RF systems to maintain clean signal transmission.
Superior fabrication compatibility: Unlike traditional PTFE-based laminates, RO4500 is fully compatible with conventional PCB fabrication and high-temperature lead-free soldering processes, requiring no special treatment for plated through-hole preparation, thus reducing manufacturing complexity and improving production control.
Good mechanical and thermal reliability: It offers improved mechanical rigidity over PTFE, a Tg greater than 280°C, and thermal conductivity of 0.6 W/m·K, ensuring stability in various application environments.

How Does RO4500 Help Improve Low PIM Performance?

Passive intermodulation (PIM) is critical for antenna PCBs, as it creates unwanted signal products that degrade transmission quality, especially in high-power RF systems like cellular infrastructure. RO4500 supports excellent low PIM performance (better than -155 dBc under specified conditions) and works with fabrication and design choices to maximize PIM control. Below is how RO4500 contributes to low PIM and considerations.

Stable material properties minimize PIM generation: RO4500’s ceramic-filled, glass-reinforced hydrocarbon composition ensures consistent dielectric properties (controlled Dk and low Df) across the laminate. This stability prevents irregularities in the material that could cause signal mixing at passive interfaces, a common source of PIM.
Compatibility with low-PIM copper foils: RO4500 works seamlessly with low-profile, smooth copper foils which are critical for reducing PIM. Smoother copper surfaces minimize contact irregularities and signal reflections that contribute to unwanted intermodulation products, enhancing overall PIM performance.
Robust thermal and mechanical stability: With a Tg greater than 280°C and good dimensional stability, RO4500 maintains its structure during high-temperature soldering and long-term operation. This prevents material warping or delamination, which can create loose contacts and increase PIM levels over time.
Standard fabrication compatibility reduces PIM risks: Unlike PTFE laminates that require specialized processing, RO4500 works with conventional PCB fabrication methods. This reduces process-related inconsistencies (e.g., poor hole wall treatment, uneven plating) that often lead to higher PIM.
Complementary design and fabrication best practices: While RO4500 provides a strong foundation for low PIM, optimal performance requires pairing it with high-quality plating, clean assembly processes, proper grounding design, and reliable RF connector soldering all of which work with RO4500’s properties to minimize PIM.

RO4500 vs PTFE Laminates: Which One Is Better for Antenna PCB?

RO4500 and PTFE laminates can both be used for antenna PCBs, but they are suitable for different project priorities.

PTFE laminates are often selected for very low-loss RF and microwave circuits. They are widely used in demanding high-frequency designs. However, PTFE materials usually require more specialized processing, which may affect cost, lead time, and manufacturing control.

RO4500 is designed to provide antenna-grade RF performance with easier PCB fabrication. It is often a better fit when the project needs low PIM potential, stable RF behavior, practical manufacturing, and cost-performance balance.

Comparison Item	RO4500 Laminates	PTFE Laminates
Main Advantage	Balanced RF performance and easier fabrication	Very low loss for demanding RF designs
Processing	Similar to standard PCB fabrication	Often requires special processing
PTH Preparation	No special PTFE-style treatment required	More process-sensitive
Cost Control	Good for volume antenna production	Usually higher process cost
Mechanical Handling	More production-friendly	Softer and more sensitive
Typical Use	Antenna PCB, base station antenna, WiMAX	RF, microwave, radar, premium antenna systems

RO4500 is often the better choice when manufacturability, low PIM performance, and production stability matter together. PTFE may be preferred when ultra-low loss is the top design priority.

What Should Be Considered When Designing RO4500 Antenna PCBs?

Designing antenna PCBs with RO4500 requires attention to key details that directly impact RF performance, production repeatability, and long-term reliability. These considerations cover material properties, fabrication processes, and assembly practices, ensuring the final PCB meets design requirements and application needs. Below are the critical points to keep in mind during the design process.

Dk and Design Dk: Process Dk and design Dk are not always the same. Process Dk is mainly used for material control, while design Dk is more useful for circuit simulation. For antenna PCBs, using the correct Dk value helps improve impedance and frequency prediction.
Copper Foil Type: Copper foil affects insertion loss, PIM behavior, and etching quality. Low-profile copper is often preferred in RF applications because smoother copper can help reduce conductor loss.
Impedance Control: Antenna PCB traces must be controlled by line width, dielectric thickness, copper thickness, and layer structure. Even small deviations can affect RF performance, so impedance requirements should be confirmed before fabrication.
Board Thickness and Flatness: Antenna PCBs may have larger board sizes than standard circuit boards. Flatness and dimensional stability should be reviewed carefully, especially for base station antenna boards and large RF panels.
Via and PTH Reliability: RO4500 is easier to process than many PTFE materials, but via quality still matters. Drill quality, hole wall treatment, copper plating, and thermal stress reliability should be controlled during fabrication.
Surface Finish: Surface finish affects solderability, contact reliability, and RF performance. ENIG, immersion silver, OSP, and other finishes may be selected depending on assembly needs and RF contact requirements.
RF Connector Assembly: RF connector layout and soldering quality can affect impedance and PIM performance. Connector footprints, ground via placement, solder joints, and mechanical support should be reviewed before production.
Fabrication Capability: The PCB manufacturer should understand Rogers laminate handling, controlled impedance, RF trace accuracy, low PIM requirements, and inspection control. A proper DFM review before production can help reduce avoidable revisions.

FAQs About RO4500 High-Frequency Laminates

Q1: What is the difference between RO4500 and FR-4 laminates for antenna PCBs?

A1: The core difference lies in RF performance and application scenarios. FR-4 is a standard PCB material with higher dielectric loss (Df) and unstable dielectric constant (Dk) at high frequencies, making it unsuitable for high-frequency antenna designs. RO4500 is a high-frequency laminate specifically engineered for antennas, with controlled Dk (3.3-3.5 ±0.08), low Df (0.0020-0.0037 at 2.5 GHz), and low PIM performance, while also being compatible with conventional FR-4 fabrication processes.

Q2: What is the maximum operating temperature of RO4500 laminates?

A2: RO4500 has a glass transition temperature (Tg) greater than 280°C, which means it can maintain stable mechanical and electrical properties in high-temperature environments. Its maximum continuous operating temperature is typically around 150°C, and it can withstand the high temperatures of lead-free soldering processes (up to 260°C for short durations), making it suitable for harsh industrial and communication infrastructure applications.

Q3: Does RO4500 require special storage conditions?

A3:Yes, RO4500 laminates need proper storage to maintain their performance. They should be stored in a clean, dry environment with relative humidity between 30%-60% and temperature between 15°C-30°C, avoiding direct sunlight, moisture, and chemical contamination. Unopened laminates have a shelf life of 6-12 months; once opened, they should be used within 30 days to prevent moisture absorption affecting dielectric properties.

Q4: Can RO4500 be used for 5G base station antenna PCBs?

A4: Absolutely. RO4500 is widely used in 5G base station antenna PCBs due to its excellent high-frequency performance. Its controlled Dk ensures stable impedance and signal propagation at 5G frequency bands (sub-6GHz and mmWave), low Df reduces signal loss, and low PIM performance (better than -155 dBc) prevents signal interference, which is critical for 5G communication quality.

Q5: What is the moisture absorption rate of RO4500 laminates?

A5: RO4500 has extremely low moisture absorption, typically less than 0.04% (per IPC-TM-650 2.6.2.1 standard). This low moisture absorption ensures that its dielectric properties (Dk and Df) remain stable even in humid environments, avoiding signal degradation and improving the long-term reliability of antenna PCBs.

Q6: Is RO4500 compatible with lead-free soldering processes?

A6: Yes, RO4500 is fully compatible with high-temperature lead-free soldering processes. Unlike traditional PTFE laminates that require special treatment, RO4500 can withstand the 260°C soldering temperature required for lead-free soldering without warping, delamination, or damage to its electrical properties, reducing manufacturing complexity.

Q7: What is the typical cost difference between RO4500 and PTFE laminates?

A7: RO4500 is more cost-effective than PTFE laminates. On average, RO4500 costs 30%-50% less than PTFE laminates for the same thickness and copper weight. This is because RO4500 is compatible with conventional PCB fabrication processes, eliminating the special processing costs required for PTFE, making it more suitable for volume production of antenna PCBs.

Conclusion

In summary, RO4500 stands out as a reliable, cost-effective high-frequency laminate solution for antenna PCB design, balancing excellent RF performance, including stable dielectric properties, low loss, and low PIM with easy manufacturability, making it an ideal choice for wireless infrastructure and various antenna-related applications when paired with thoughtful material selection and design considerations.

Multilayer Ceramic Circuit Board: What Should Engineers Know?

May 19th, 2026

What Is a Multilayer Ceramic Circuit Board?

Multilayer Ceramic Circuit Board is a circuit structure built with multiple conductive layers inside or on a ceramic substrate. Instead of using glass-reinforced epoxy, like a standard FR4 board, it uses ceramic materials such as alumina, aluminum nitride, silicon nitride, or low-temperature co-fired ceramic materials. These materials give the board strong thermal performance, stable electrical behavior, and excellent mechanical reliability in demanding applications.

A multilayer ceramic substrate is usually designed with several internal layers. These layers may include signal traces, ground planes, power planes, buried vias, thermal vias, and pads for components. The internal structure allows engineers to place more circuits into a smaller area while keeping the board stable and efficient. Compared with a single-layer ceramic board, the multilayer version offers more design freedom and better electrical integration.

The term “multilayer ceramics” can refer to different technologies. Some boards are made by stacking ceramic green sheets and co-firing them with metal paste. Others use post-fired ceramic substrates with plated copper structures. The right technology depends on the required line width, copper thickness, thermal conductivity, operating frequency, and production volume.

How Does a Multilayer Ceramic PCB Work?

Multilayer ceramic PCB works by combining several conductive layers with insulating ceramic layers. Each conductive layer has a specific electrical role. Some layers carry signals, some distribute power, and some act as ground planes.

The ceramic material acts as the dielectric body. It separates the copper, tungsten, molybdenum, silver, or gold conductor layers while providing electrical insulation. At the same time, ceramic conducts heat better than many organic PCB materials. This allows heat generated by power devices, LEDs, resistors, or RF components to move away from hot spots more efficiently.

In high-speed or RF designs, the ceramic substrate also helps keep electrical performance stable. Ceramic materials usually have controlled dielectric properties, low moisture absorption, and good dimensional stability. This helps the board maintain signal quality across temperature changes and long-term use.

A typical multilayer ceramic circuit structure may include:

Signal layers for routing compact circuits and component connections.
Ground layers for shielding, return current control, and noise reduction.
Power layers for stable voltage distribution.
Via structures for vertical interconnection between layers.
Thermal paths for transferring heat from components to the base or housing.

The design principle is simple, but the execution requires precision. The inner layers must align correctly. Via filling must be reliable. The ceramic body must be fired or processed under controlled conditions.

Item	Standard FR4 Multilayer Circuit Board	Multilayer Ceramic Circuit Board
Base Material	Glass fiber and epoxy resin	Alumina, AlN, Si₃N₄, LTCC, or other ceramics
Thermal Conductivity	Moderate	High to very high, depending on ceramic type
Dimensional Stability	Good for common electronics	Excellent under heat and harsh use
Moisture Absorption	Higher than ceramic	Very low
Common Use	Consumer electronics, control boards, general PCB assemblies	Power electronics, RF modules, sensors, medical, automotive, LED, aerospace
Main Advantage	Cost efficiency and broad availability	Heat control, compact structure, high reliability

How Is a Multilayer Ceramic Circuit Board Manufactured?

The manufacturing process depends on the selected ceramic technology. However, the general target is always the same: create a stable ceramic body with precise internal conductive layers and reliable vertical interconnections. For this reason, the process requires strict control of materials, layer registration, firing temperature, conductor shrinkage, and surface finish.

For LTCC and HTCC structures, production often starts with ceramic green tape. This tape is a flexible ceramic sheet before firing. The manufacturer punches or drills via holes, fills them with conductive paste, prints circuit patterns, stacks the layers, laminates them under pressure, and then fires the structure at a controlled temperature. During firing, the ceramic and conductor system become a solid integrated body.

For post-fired ceramic PCB manufacturing, the ceramic substrate may be prepared first, and then copper circuits are built by metallization, plating, etching, or film deposition. This route is often used when higher copper conductivity or thicker copper is needed.

A common multilayer ceramic PCB manufacturing flow may include:

Material selection: Choose alumina, AlN, Si₃N₄, LTCC, or another ceramic based on heat, dielectric, and mechanical needs.
Stack-up design review: Confirm layer count, conductor width, spacing, via size, dielectric thickness, and thermal path.
Via formation: Create vertical holes by punching, laser processing, or drilling, depending on the process.
Via filling and conductor printing: Fill vias and print inner circuit layers using suitable conductive material.
Layer stacking and alignment: Stack all layers with accurate registration to protect electrical continuity.
Lamination or bonding: Press layers together under controlled temperature and pressure.
Firing or metallization: Sinter the ceramic body or build copper after ceramic firing.
Surface finishing: Apply suitable finish for soldering, wire bonding, or component attachment.
Inspection and testing: Use visual inspection, electrical testing, dimensional measurement, and reliability checks.

EBest Circuit (Best Technology) supports ceramic PCB manufacturing with engineering review, material selection, DFM feedback, and production process control. For multilayer ceramic projects, this early review is especially useful because design choices made at the beginning directly affect yield, cost, and long-term product reliability.

What Should Be Considered in Multilayer Circuit Board Design?

Multilayer circuit board design for ceramic substrates requires a slightly different mindset from FR4 design. Engineers should not treat ceramic as just another base material. Ceramic has its own processing rules, strength profile, copper bonding behavior, dielectric behavior, and thermal characteristics.

The first point is material choice. Alumina is widely used because it offers good insulation, stable performance, and attractive cost control. Aluminum nitride is preferred when thermal conductivity is a key requirement. Silicon nitride is useful where mechanical toughness and thermal cycling resistance matter. LTCC materials are often selected for compact RF modules, sensors, and embedded passive designs.

The second point is the layer structure. Engineers should decide which layers will carry signals, which layers will act as ground, and which paths will move heat away from components. In compact power or RF designs, a ground plane is not only an electrical reference. It may also help reduce noise, improve shielding, and stabilize impedance.

Designers also need to consider via diameter, via pitch, conductor thickness, minimum spacing, solder pad size, board thickness, edge clearance, and surface finish. Ceramic is hard and dimensionally stable, which is excellent for many uses.

Here is a practical design comparison:

Design Factor	Why It Matters	Engineering Recommendation
Ceramic Material	Affects heat transfer, dielectric behavior, cost, and strength	Select material according to power, frequency, size, and environment
Layer Count	Controls routing density and board thickness	Use only the required number of layers to balance function and cost
Via Structure	Determines vertical connection and current path	Match via size and filling method with process capability
Ground Plane	Improves signal return path and shielding	Use continuous ground where RF or high-speed signals are present
Thermal Path	Reduces component temperature rise	Place thermal vias or heat-spreading layers close to heat sources
Copper Thickness	Affects current carrying and heat spreading	Choose based on current load and assembly needs
Pad Design	Affects solder quality and component stability	Follow component footprint and ceramic process rules
Surface Finish	Affects solderability and wire bonding	Select ENIG, silver, gold, or other finish based on assembly method

A well-designed multilayer ceramic board is not only smaller. It is also easier to assemble, easier to test, and more reliable in service. Therefore, engineers should involve the manufacturer early, especially when the design includes fine lines, high thermal load, RF routing, or special component packaging.

How Are Inner Layers Connected in a Multilayer Ceramic PCB?

Inner layers in a multilayer ceramic PCB are connected through vias. These vias create vertical electrical paths between different conductive layers. Without vias, each layer would remain isolated, and the board could not function as an integrated multilayer circuit.

The via structure may vary according to the ceramic process. In co-fired ceramic technology, vias are usually formed in the green tape before firing. They are then filled with conductive paste. After stacking and firing, the via becomes part of the ceramic body. In plated ceramic processes, vias may be laser-drilled or mechanically processed, then metallized and plated to form a conductive barrel.

There are several via types that may be used in multilayer ceramic designs:

Via Type	Description	Typical Use
Through Via	Connects from the top layer to the bottom layer	General interconnection and test access
Blind Via	Connects an outer layer to one or more inner layers	Compact routing and HDI-style layouts
Buried Via	Connects only internal layers	Dense routing without occupying outer-layer space
Filled Via	Via hole is filled with conductive or non-conductive material	Heat transfer, current carrying, or flat pad support
Thermal Via	Designed mainly to move heat	Power devices, LEDs, modules, and heat-sensitive circuits

For power electronics, vias must also carry current and heat. A via that only works electrically may not be enough. The designer may need a via array under power components, a copper-filled structure, or direct thermal connection to a metal base or heat sink. In RF circuits, via placement affects grounding and shielding. Poor via distribution can increase parasitic effects, while a carefully designed via fence can improve isolation.

Can Multilayer Ceramic PCBs Support High-Density Circuits?

Yes, multilayer ceramic PCBs can support high-density circuits when the process and design rules are properly matched. Their multilayer structure allows more routing channels within a smaller footprint. This is helpful for compact modules, sensor packages, RF front-end circuits, LED arrays, power control units, and advanced industrial electronics.

High-density design is not only about placing many traces in a small area. It also requires stable insulation, precise via registration, controlled conductor geometry, and reliable assembly pads. Ceramic substrates offer strong dimensional stability, which helps maintain fine features during processing and use.

LTCC is especially useful for compact high-density designs. It can integrate internal conductors, vias, cavities, and sometimes passive structures. This makes it suitable for RF modules, filters, antennas, sensor packages, and compact electronic assemblies.

For dense ceramic circuit boards, engineers should pay attention to:

Routing priority: Place sensitive signals first, then power and support traces.
Ground control: Use ground planes and via stitching to manage return paths.
Thermal mapping: Identify heat sources before finalizing layer placement.
Assembly clearance: Keep enough room for soldering, inspection, and rework evaluation.
Panelization: Consider breakaway design, edge strength, and handling during production.
Testing access: Add test points or inspection features where space allows.

A high-density multilayer ceramic substrate can be powerful when designed with discipline. It can reduce module size while improving heat flow and electrical stability.

What Are the Benefits of Multilayer Ceramic Circuit Boards?

The benefits of multilayer ceramic circuit boards come from the combination of ceramic insulation, dense interconnection, and excellent thermal behavior.

One major benefit is thermal management. Ceramic materials can transfer heat more effectively than many organic PCB materials. Aluminum nitride, in particular, offers high thermal conductivity, making it suitable for power modules, high-brightness LEDs, laser devices, and compact electronics with concentrated heat sources.

Another benefit is electrical stability. Ceramic substrates usually have low moisture absorption and stable dielectric properties. This supports RF performance, high-frequency behavior, and long-term signal integrity. For products working in changing temperatures or demanding environments, that stability is highly valuable.

Mechanical and chemical resistance also matter. Ceramic boards can perform well in high-temperature, high-voltage, or chemically challenging conditions. They keep their shape well and provide a strong platform for precision circuits.

Key benefits include:

Efficient heat dissipation for power components and high-brightness devices.
Compact multilayer routing for smaller electronic modules.
Stable dielectric behavior for RF, sensor, and high-frequency circuits.
Low moisture absorption for dependable operation in harsh environments.
Strong insulation for high-voltage or high-reliability circuits.
Excellent dimensional stability for precise assembly and fine features.
Good long-term reliability for automotive, medical, aerospace, and industrial uses.

Compared with a standard multilayer circuit board, ceramic multilayer technology is not always chosen for basic consumer electronics. Its value becomes clear when the application needs heat control, compact design, stable electrical properties, or rugged operation.

What Are the Common Applications of Multilayer Ceramic PCBs?

Multilayer ceramic PCBs are used in applications where performance, space, and reliability are all important. They are especially valuable when the circuit must handle heat, maintain electrical stability, or operate in demanding conditions..

In power electronics, ceramic boards are used for modules, drivers, converters, inverters, and power control systems. The ceramic body helps move heat away from power semiconductors. This supports better operating temperature control and longer component life.

In RF and microwave devices, ceramic materials provide stable dielectric behavior. This makes them suitable for filters, antennas, amplifiers, radar-related modules, communication systems, and high-frequency sensor packages.

In medical electronics, ceramic boards may be used in sensors, diagnostic modules, imaging equipment, wearable devices, and precision control systems. These products often require stable performance, compact design, and dependable insulation.

In automotive and aerospace electronics, ceramic multilayer boards support harsh-environment applications, including power control, sensor systems, lighting, and communication modules.

Common application areas include:

Power modules and semiconductor packaging.
High-brightness LED and laser systems.
RF and microwave communication modules.
Industrial sensors and control circuits.
Medical diagnostic and monitoring equipment.
Automotive electronics and EV-related power systems.
Aerospace, UAV, and defense-grade electronic modules.
High-temperature electronics and precision instruments.

The application range continues to expand because electronics are becoming smaller, hotter, and more function-rich. A multilayer ceramic circuit structure helps engineers fit more capability into limited space while keeping the product stable and manufacturable.

How Do You Choose a Reliable Multilayer Ceramic PCB Manufacturer?

Choosing the right manufacturer is one of the most important decisions in a multilayer ceramic PCB project. Ceramic multilayer boards require more than basic PCB production ability. The manufacturer should understand ceramic materials, stack-up control, via processing, metallization, firing behavior, surface finish, assembly compatibility, and inspection standards.

A reliable manufacturer should first review the design from an engineering perspective. This includes checking material choice, conductor width, spacing, via size, layer count, thermal path, pad design, and expected assembly method. Good DFM feedback can help engineers improve the design before production begins. This saves time and improves first-pass success.

The manufacturer should also have experience with different ceramic materials. Alumina, aluminum nitride, silicon nitride, LTCC, and other multilayer ceramics do not behave the same way during processing. Each material has its own thermal performance, mechanical strength, dielectric value, and processing window.

Quality control is another key factor. Ceramic boards should be inspected for dimensions, layer alignment, circuit continuity, surface quality, plating quality, solderability, and visual defects. For advanced projects, additional checks such as X-ray inspection, cross-section analysis, thermal testing, and reliability testing may be needed.

When evaluating a manufacturer, engineers can use this checklist:

Evaluation Point	What to Check	Why It Matters
Ceramic Material Capability	Alumina, AlN, Si₃N₄, LTCC, DPC, DBC, or other options	Ensures the right substrate for thermal and electrical needs
Multilayer Process Experience	Layer alignment, via filling, lamination, firing, metallization	Protects inner-layer reliability
DFM Support	Stack-up review, pad review, via review, process advice	Reduces design risk before fabrication
Testing Capability	Electrical test, dimensional inspection, visual inspection, X-ray when needed	Confirms product quality before shipment
Assembly Knowledge	Soldering, wire bonding, component placement, thermal interface	Improves compatibility with PCBA production
Engineering Communication	Clear feedback, fast response, practical suggestions	Helps projects move faster and with fewer revisions
Traceability	Material batch, process record, inspection data	Supports quality control and regulated applications

EBest Circuit (Best Technology) can support customers from ceramic PCB design review to fabrication and assembly-related engineering discussion. For multilayer ceramic projects, the team can help evaluate material options, stack-up feasibility, via structure, surface finish, thermal path, and manufacturing risk. This is especially helpful for engineers working on power electronics, RF modules, medical devices, industrial control systems, LED products, UAV electronics, and high-reliability applications.

For project support or quotation requests, contact sales@bestpcbs.com

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