Double Sided IMS PCB, IMS PCB Manufacturer

July 25th, 2025

If you are working on high-power electronics, LED lighting, or power conversion modules, thermal management is probably one of your biggest challenges. That’s where the double sided IMS PCB comes into play.

As a reliable IMS PCB manufacturer, Best Technology has been helping engineers and purchasing teams solve complex design issues using double sided metal core solutions that offer excellent thermal performance and mechanical strength. Our products are widely used in various applications like LED lighting, automotive electronics, power modules, and more.

What Is a Double Sided IMS PCB?

A double sided IMS PCB (Insulated Metal Substrate Printed Circuit Board) is a type of PCB that uses a metal base—typically aluminum or copper—combined with two copper layers and insulating dielectric layers in between. This structure allows designers to place components on both sides or route critical signals more efficiently while managing heat effectively.

Unlike single-sided IMS PCBs that have components and traces only on one side, double-sided versions support components mounting and traces layout both on top and bottom side, it allowed complex designs, higher current flow, and better heat transfer through thermal vias.

In simple terms: if your board gets hot and needs more routing space, a double sided IMS PCB can help.

Double Sided IMS PCB Structure

A double sided IMS PCB is built with multiple carefully selected layers, designed to balance electrical performance, mechanical strength, and heat dissipation. The general structure looks like this:

Top copper layer: Carries the electrical traces and component pads.
Top dielectric layer: An electrically insulating but thermally conductive material.
Metal core: Usually aluminum or copper, it serves as a mechanical base and heat sink.
Bottom dielectric layer: Same material as the top layer, separating the metal core from the bottom copper.
Bottom copper layer: It is a trace layer, used for power, ground, or additional signal traces.

Plated through holes (vias) allow electrical connection between the top and bottom copper layers. These vias can also help conduct heat away from hot components into the metal core, improving thermal performance.

Types of IMS PCB Materials

In IMS PCB design, the metal base plays a critical role in heat dissipation and mechanical stability. The two most commonly used core materials are aluminum and copper, each with distinct advantages and application scenarios.

1. Aluminum-Based IMS PCB

Aluminum is by far the most widely used metal base material in IMS PCBs. It offers a great balance between cost, weight, and thermal performance. With a typical thermal conductivity of 1.0 to 3.0 W/m·K, aluminum is sufficient for most applications where moderate heat needs to be managed efficiently.

Advantages of aluminum base:

Cost-effective: More affordable than copper, suitable for mass production.
Lightweight: Ideal for weight-sensitive designs like automotive lighting and portable devices.
Corrosion-resistant: Naturally forms a protective oxide layer, extending board life.
Good thermal conductivity: Capable of dissipating heat from surface-mounted components quickly.

Typical applications:

LED lighting systems (e.g. street lights, home bulbs)
Power driver boards
Consumer electronics
Automotive LED modules

Aluminum IMS PCBs are perfect for designs that need reasonable thermal performance at a lower cost. They’re especially common in LED products, where keeping junction temperature low is essential to extending light source life.

2. Copper-Based IMS PCB

Copper-based IMS PCBs are chosen when thermal management becomes critical, or when mechanical robustness is equally important. Copper has a thermal conductivity of around 5.0 W/m·K—more than double that of aluminum—making it an ideal choice for high-power or high-density applications.

Advantages of copper base:

Superior heat dissipation: Excellent for fast heat transfer in high-power designs.
High mechanical strength: Less prone to flexing or warping under load or heat.
Stable performance at high temperatures: Supports continuous operation in demanding environments.
Better current carrying capacity: Enables narrower traces for the same current level.

Typical applications:

Power inverters and converters
Motor control units and industrial drives
RF amplifiers and telecom power modules
Aerospace and defense electronics
High-performance LED arrays

Due to its higher cost and weight, copper is generally used in specialized applications where reliability, thermal performance, or current handling are mission-critical. It’s especially favored in automotive power systems, high-end industrial equipment, and aerospace control circuits.

Single vs Double Sided IMS PCB

When choosing between single-sided and double-sided IMS PCBs, understanding their structural and functional differences is essential. Below is a detailed comparison covering performance, design flexibility, manufacturing complexity, and cost.

Comparison Aspect	Single Sided IMS PCB	Double Sided IMS PCB
Copper Layers	One layer on top	Two layers – top and bottom
Component Placement	Only on one side	Possible on both sides or top side with backside routing
Thermal Conductivity Path	Heat moves in one direction (top to base)	Heat can dissipate through both layers via thermal vias
Routing Flexibility	Limited routing options	More complex, denser routing possible
Via Usage	Usually no plated vias	Requires plated through vias for inter-layer connections
Design Complexity	Simpler, suitable for low-power applications	Supports more complex, high-current designs
Manufacturing Cost	Lower cost, fewer steps	Higher cost due to drilling, plating, and alignment
Board Thickness	Generally thinner	Slightly thicker due to multilayer structure
Current Carrying Capacity	Limited by single copper layer	Higher due to dual copper planes
Mechanical Strength	Moderate	Higher due to more balanced structure
Typical Applications	LED bulbs, indicator lights, basic power supplies	LED headlights, motor drivers, power inverters
Preferred Use Cases	Cost-sensitive and thermally moderate projects	Thermally demanding, high-power, or complex circuitry

At Best Technology, we provide both types with full engineering support, helping you select the right option based on your performance goals and budget.

IMS PCB Design Considerations

Designing an effective IMS PCB, especially a double sided IMS PCB, requires more than just basic layout knowledge. As a professional IMS PCB manufacturer, we often find that early-stage design decisions directly impact not only the cost but also manufacturability, reliability, and thermal performance.

Here are our top recommendations to help you design a high-quality IMS PCB that meets both technical and production requirements:

1. Understand the Thermal Path Early

IMS PCBs are often chosen for their excellent heat dissipation. To maximize this advantage:

Place heat-generating components (like LEDs, power ICs, MOSFETs) directly above the metal core or near thermal vias.

Use thermal reliefs for pads to balance solderability and heat transfer.
Avoid thick dielectric layers if fast heat conduction is critical—choose higher thermal conductivity materials instead.

2. Use Plated Vias Wisely

In double sided IMS PCBs, plated through holes (vias) are crucial to connect the top and bottom copper layers. However:

Vias increase cost due to drilling and plating steps.
Avoid placing too many vias near mechanical mounting holes to prevent cracking during assembly.
For high-current paths, increase via diameter and plating thickness, or use multiple thermal vias in parallel.

3. Optimize Trace Widths and Spacing

Due to higher currents in IMS boards:

Use wider traces wherever possible, especially for power lines.
Respect minimum clearance based on copper thickness and voltage—this prevents arcing and improves reliability.
Avoid sharp 90° corners on high-current or RF traces; use 45° or curved corners instead.

If you’re not sure how wide your traces should be, send us your current ratings—we’ll recommend widths based on IPC standards and real-world performance.

4. Select Suitable Copper Thickness

For IMS PCBs, copper thickness directly impacts both electrical and thermal performance:

Standard thickness is 1oz (35µm), suitable for low to medium current.
For high current or improved thermal conduction, 2oz or 3oz copper is recommended.
Very thick copper (up to 10oz) is possible, but it increases cost and etching complexity.

5. Component Layout Planning

Avoid clustering hot components together—spread them out to help heat dissipation.
Keep temperature-sensitive components (like ICs, sensors) away from heat sources.
Leave clearance around mounting holes to prevent shorting with metal base.

6. Surface Finish Compatibility

Tell us your assembly process (manual, reflow, wave soldering) and component pitch—we’ll advise the best finish.

ENIG is recommended for flat surfaces and fine-pitch components.
HASL is affordable but not ideal for tight layouts.
Immersion silver and OSP are good for high-frequency circuits.

7. Share Your Design Goals Early

Many designers only share Gerber files at the last step. But as a manufacturer, we can provide more value when we’re involved earlier.

Let us know if your priority is cost, thermal performance, space saving, or high current.
Share thermal simulation data if available—we can help validate materials and layout choices.
If you’re unsure between aluminum and copper base, we can guide based on your budget and operating temperature.

Double Sided IMS PCB Manufacturing Process

Manufacturing a double sided IMS PCB involves multiple controlled steps. Here’s we simply introduce the manufacturing processed involving in the insulated metal substrate fabrication:

1. Material Lamination

The copper foils and dielectric are laminated on both sides of the metal base with high pressure and temperature.

2. Drilling & Via Formation

Mechanical or laser drilling creates via holes through the board. These holes are then plated with copper to allow connectivity between top and bottom copper layers.

3. Imaging & Etching

Circuit patterns are created on both copper layers using photoresist and chemical etching.

4. Solder Mask Application

Solder mask is applied to protect copper from oxidation and to guide solder placement during assembly.

5. Surface Finishing

Finish is applied on copper pads to enhance solderability and prevent corrosion.

6. Testing

Electrical tests (shorts/opens) and inspection ensure product quality before packaging and shipment.

Here is a completed manufacturing process of IMS PCB.

Double Sided IMS PCB Surface Finish Options

HASL (Lead-free): Affordable, but not ideal for fine-pitch components.
ENIG (Electroless Nickel Immersion Gold): Excellent flatness, long shelf life, RoHS-compliant.
ENEPIG: Very good solderability, corrosion resistance, durable.
OSP: Cost-effective and environmentally friendly, but short shelf life.
Immersion Silver: Good for high-frequency signals, flat and solderable.
Hard Gold: Very durable, typically used for connectors or edge contacts, but rarely used in IMS PCB, it is popular in FR4 PCB.

At Best Technology, we recommend ENIG or ENEPIG for double sided IMS PCBs used in LED or power applications due to its durability and finish quality.

Cost Factors of Double Sided IMS PCB

The cost of a double sided IMS PCB is influenced by multiple variables, ranging from material selection to design complexity. As a manufacturer, we often find that many cost increases come from early design decisions. Here are the main cost drivers you should be aware of:

1. Material Type

Aluminum is more affordable and widely used, while copper offers better thermal performance but at a significantly higher price. If your project doesn’t demand extreme thermal performance, aluminum is usually the better choice from a budget perspective. High Tg costs more.

2. Copper Weight

Thicker copper layers allow for higher current carrying capacity and better heat dissipation, but they also increase cost:

Standard: 1oz (35µm)
Mid-range: 2oz – 3oz
Heavy copper: 4oz – 10oz (used in power-intensive designs)

Heavier copper requires longer etching time and more material, which increases both processing time and price.

3. Board Size & Shape

Larger PCBs naturally use more material and occupy more space on the production panel. Irregular shapes also lead to more material waste and extra routing time.

Square or rectangular boards make better use of panel space.
Rounded or irregular outlines may require CNC routing or laser cutting, which adds cost.

4. Via Count and Type

Double sided IMS PCBs require plated through holes (PTH) to connect the two copper layers. The more vias you have, and the smaller their diameter, the more complex and expensive the drilling and plating process becomes. Via-in-pad, filled vias, and microvias are more expensive.

5. Dielectric Layer Thickness

Though not the focus here, it’s worth noting: if you select high-performance dielectric materials (e.g., with higher thermal conductivity or thinner thickness), the price will increase. These materials are more specialized and costlier to produce.

6. Special Features

Any additional processes will increase cost, such as:

Via-in-pad or filled vias
Selective plating or special coatings
Edge plating or beveling
Thermal simulations or FEA reports (optional support)

These are usually project-specific, so it’s best to clarify during the RFQ stage.

Best Technology – Your Reliable IMS PCB Manufacturer

When it comes to manufacturing double sided IMS PCBs, experience, precision, and consistency matter. At Best Technology, we specialize in high-performance metal core PCBs tailored to thermal management, power conversion, and LED lighting applications.

We offer:

Custom solutions using aluminum or copper base materials with various shapes
Precision-controlled dielectric thicknesses for consistent thermal resistance
Tight tolerance drilling and PTH plating for stable double-sided connections
Surface finishes like ENIG, ENEPIG, OSP, and lead-free HASL to match your assembly needs
Free DFM checks with technical support
24/7 before & after sales assist
Professional sales can provide best solution tailored to your specific requirement
Transparent price and data traceability
High quality control followed IATF 16949
No MOQ required, 1 pc available

Whether you need rapid prototypes or mass production, our engineering team supports you from design optimization to final testing. We believe that a good PCB starts with good communication—and we’re always ready to listen.

To get an accurate and cost-effective quote, always provide the following details upfront:

Base material (Al or Cu)
Copper thickness
Board size and outline
Layer count and via design
Expected volume
Surface finish
Thermal performance requirements

Send your Gerber files or RFQ to sales@bestpcbs.com to get started.

FAQs

Q1: What is the thermal conductivity of a double sided IMS PCB?

It depends on the dielectric used. Standard ranges are 1.0 to 3.0 W/m·K, with higher options available for demanding designs.

Q2: Can I place components on both sides of a double sided IMS PCB?

Typically, one side is reserved for power routing or heat dissipation, but yes, it’s technically possible depending on the application.

Q3: What surface finish is best for LED applications?

ENIG is recommended for its flatness, solderability, and long shelf life.

Q4: Are double sided IMS PCBs expensive?

They cost more than single-sided IMS or standard FR4 PCBs, but offer much better thermal and electrical performance, especially for power-intensive designs.

Q5: How can I get a quote from Best Technology?

Just email your Gerber files and requirements to sales@bestpcbs.com, and we’ll respond within 24 hours.

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How to Choose MCPCB Dielectric Material for High-Power LEDs?

July 24th, 2025

How to choose MCPCB dielectric material for high-power LEDs? This guide covers material functions, types, selection criteria, and design best practices for high-power LED applications.

Are you worried about these issues?

LED temperature is too high, causing accelerated light decay?
Uneven thickness of insulation layer causes short circuit risk?
Is it difficult to control the cost of small batch orders?

Best Technology provide you with:

Free thermal analysis report: Dielectric layer thermal optimization plan is issued within 48 hours
Full process quality control: third-party test data is provided for each batch (including thermal conductivity/voltage resistance test)
Customized formula: adjust dielectric layer parameters according to power density (0.5-4.0W/m·K optional)

Welcome to contact us if you have any inquiry for MCPCB: sales@bestpcbs.com.

What Is MCPCB Dielectric Material?

MCPCB dielectric material is a specialized insulating layer designed to efficiently conduct heat while maintaining electrical isolation between the circuit traces and the metal substrate (typically aluminum or copper) in metal-core printed circuit boards. Unlike traditional FR-4 laminates, this material exhibits significantly higher thermal conductivity (typically 1–3 W/m·K), making it essential for high-power electronic applications where heat dissipation is critical.

The material’s composition often includes epoxy-based resins filled with ceramic particles, which enhance thermal performance and mechanical stability. It must also withstand high operating temperatures (up to 140°C) and match the thermal expansion coefficients of the adjacent layers to prevent delamination.

What Are Functions of MCPCB Dielectric Materials?

Electrical Insulation: Prevents current leakage between conductive layers while allowing signal transmission.
Thermal Management: Transfers heat from components to metal core (typically aluminum/copper) with thermal conductivity up to 230 W/mK in advanced materials
Mechanical Support – Maintains structural integrity between metal base and circuit layers under thermal/mechanical stress.
Dielectric Stability – Maintains consistent dielectric constant (Dk) and low loss tangent (Df) across operating temperatures.
Process Compatibility – Withstands soldering temperatures (>288°C for lead-free processes) and laser drilling for via formation.
CTE Matching – Minimizes thermal expansion mismatch between layers to prevent delamination.

What Are Applications of MCPCB Dielectric Materials?

Applications of MCPCB dielectric materials:

LED Lighting – Architectural/automotive/industrial high-power LED modules.
Automotive Systems – ADAS radar modules, EV battery management.
Power Electronics – DC-DC converters, high-current switching supplies.
Aerospace/Defense – Satellite RF amplifiers, extreme-temperature avionics.
AI/HPC Hardware – 2.5D/3D IC packaging for AI accelerators.
Motor Drives – Industrial VFDs, servo controller IGBT modules.

MCPCB Dielectric Material Dielectric Constant

Material Type	Dielectric Constant (εr)
Ceramic-filled Polymer	4.0-5.0
Epoxy Resin	3.5-4.5
Polyimide	3.2-3.8
Al₂O₃-filled Composite	4.2-4.8
AlN-filled Composite	8.5-9.5
PTFE	2.0-2.1

What Are Types of MCPCB Dielectric Material?

1. Ceramic-filled Polymer

Specialty blends with ceramic particles for thermal conductivity (1.0-3.0 W/m·K).
Used in Bergquist IMS series for LED/automotive applications.

2. Epoxy Resin

Standard dielectric material with low thermal conductivity (0.3-0.8 W/m·K).
Cost-effective for low-power MCPCBs.

3. Polyimide

High-temperature-resistant polymer (up to 260°C).
Used in aerospace/defense MCPCBs requiring thermal stability.

4. Al₂O₃-filled Composite

Oxide ceramic filler enhances thermal performance (3.5-5.0 W/m·K).
Common in Dow/Laird high-reliability products.

5. AlN-filled Composite

Ultra-high thermal conductivity (170-230 W/m·K).
Premium option for EV battery/RF power modules.

6. PTFE (Polytetrafluoroethylene)

Low-loss dielectric for high-frequency applications.
Used in RF/microwave MCPCB designs.

How to Choose MCPCB Dielectric Material for High-Power LEDs?

1. Core Performance Priorities

Thermal Conductivity

Select ≥2.0 W/m·K materials (e.g., AlN composites) for LED arrays >50W/cm².
Avoid epoxy resins (<1.0 W/m·K) in high-power applications.
Verify via ASTM D5470 thermal impedance testing.

Electrical Insulation

Require breakdown voltage ≥5kV and volume resistivity ≥10¹²Ω·cm.
Mandate UL 94 V-0 flammability certification.
Validate performance at 85℃/85%RH humidity.

CTE Matching

Align dielectric CTE with copper (17-18ppm/℃) and aluminum (23-24ppm/℃).
Use Al₂O₃ (6-8ppm/℃) with buffer layers for CTE mismatch compensation.

2. Material Selection Strategy

Power Density <3W/cm² (General Lighting)

Aluminum MCPCB (1.5-2.0W/m·K) with prepreg thickness 0.1-0.2mm.
Cost-optimized FR-4 alternative with additional heat sinks.

Power Density 3-10W/cm² (Automotive/Industrial)

Copper MCPCB (3.0-4.5W/m·K) + AlN dielectric layer.
Require vacuum lamination process with >95% void-free rate.

Power Density >10W/cm² (Laser/UV LEDs)

DBC ceramic substrate (AlN/BeO) with MIL-STD-883 thermal shock compliance.
Partner with suppliers providing original sintering curves.

3. Supplier Evaluation Checklist

Technical Compliance

Provide dielectric thickness vs. thermal resistance curves.
Share third-party test reports for RoHS/REACH compliance.

Production Capability

Confirm brown oxidation process uses chromium-free formulas.
Validate line width accuracy ±10μm and solder mask 288℃ resistance.

Cost Structure

Request material cost breakdown (copper 35%/dielectric 40%).
Negotiate copper price adjustment clauses for ±5% fluctuations.

How to Choose MCPCB Dielectric Material for High-Power LEDs?

High-Power LED MCPCB Design Guideline

1. Requirement Analysis

Define LED power density (W/cm²), operating voltage, and thermal budget.
Identify environmental factors: ambient temperature, humidity, vibration levels.
Set cost targets: balance material quality with production volume.

2. Material Selection Strategy

Low Power (<3W/cm²): Aluminum MCPCB with 1.5-2.0W/m·K dielectric.
Medium Power (3-10W/cm²): Copper MCPCB + AlN dielectric layer.
High Power (>10W/cm²): DBC ceramic substrate (AlN/BeO).

3. Layout Optimization

Place LEDs in matrix pattern with ≥2mm spacing between high-power components.
Use dedicated traces for power/ground (≥1mm width for >2A currents).
Avoid sharp angles in copper traces to prevent hotspots.

4. Thermal Management

Implement thermal vias under LED pads (diameter ≥0.5mm, pitch ≤1.5mm).
Use graphite sheets for lateral heat spreading in compact designs.
Validate thermal performance with IR camera testing.

5. Prototype Validation

Conduct 72-hour burn-in test at 85℃ ambient temperature.
Measure junction temperature using thermal couples or IR thermography.
Verify insulation resistance after 168hrs at 85%RH humidity.

6. Production Readiness

Require suppliers to provide PPAP documentation for critical materials.
Implement SPC for dielectric layer thickness (±10% tolerance).
Use AOI systems for solder paste inspection and component alignment.

Why Choose Best Technology as MCPCB Manufacturer?

Reasons why choose us as your MCPCB manufacturer:

High-Quality Dielectric Material Solution – Provides a high-performance insulating layer with a thermal conductivity of 2.8W/m·K, which improves the heat dissipation efficiency by 40% compared to conventional materials.
24-Hour Rapid Prototyping Service – Accelerates product development cycle, reducing time-to-market by 30% compared to industry standards.
Fast Lead Times (7-15 days for bulk orders) – Shorten production cycles by 30% compared to competitors.
18+ Years Industry Expertise- Provides free DFM analysis to optimize designs for cost and performance.
Competitive Pricing with No Hidden Fees – Delivers 15–20% cost savings compared to European suppliers.
No-MOQ Flexibility – Start with small batches to test markets before scaling up.
Global Logistics Support – Hassle-free shipping to 50+ countries with customs expertise.
One-Stop Solution – From PCB design to assembly, reduce supplier management complexity.
24/7 Technical Support – Engineers on standby to resolve issues within 4 hours.
Long-Term Partnership Pricing – Volume discounts and flexible payment terms for repeat clients.

By integrating rapid response with professional technical services, we help customers achieve the core value of reducing R&D cycle by 50%+ and improving mass production yield to 99%, please feel free to contact Best Technology if you have any request for MCPCB: sales@bestpcbs.com.

Tags: MCPCB, MCPCB Dielectric Material
Posted in best pcb, bestpcb, mcpcb, Metal Core PCB | No Comments »

IMS PCB Technology, IMS Circuit Board Manufacturer

July 24th, 2025

What is IMS PCB technology? This guide covers its definition, benefits material options like aluminum substrates, applications, design rules, manufacturing processes, and future innovations.

Are you bothered by these problems?

Is your product frequently downtime due to insufficient heat dissipation?
Are you in a dilemma between material cost and heat dissipation performance?
Does space limitation limit your PCB design flexibility?

Best Technology can provide:

Our IMS PCB uses a high thermal conductivity aluminum substrate, which reduces thermal resistance by 50% to ensure continuous and stable operation.
Optimize the metal substrate process, reduce costs by 20%, increase heat dissipation efficiency by 30%, and achieve the best cost performance.
Support customized multi-layer metal substrates, compatible with high-density wiring, and adapt to compact space requirements.

Welcome to contact us if you have any request for IMS PCB: sales@bestpcbs.com.

What Is IMS PCB Technology?

IMS (Insulated Metal Substrate) PCB technology integrates a metal core, typically aluminum or copper with a thermally conductive dielectric layer and copper circuitry, creating a “metal-backed heat sink” for electronic components. Unlike traditional FR4 boards prone to overheating, IMS PCBs rapidly dissipate heat from high-power components (like LEDs, power converters, or 5G amplifiers), boosting device lifespan by up to 40% while preventing thermal failure. This makes them essential for demanding applications in automotive lighting, renewable energy systems, and medical devices, where efficient heat management ensures reliability, compact designs, and safety compliance.

What Are Advantages of IMS PCB Technology?

Benefits of IMS PCB Technology

Superior Heat Dissipation – Aluminum cores efficiently transfer heat away from high-power components (e.g., LEDs, power modules), reducing thermal stress and extending lifespan. Ideal for applications like automotive lighting and industrial power electronics.
Enhanced Durability – Metal substrates provide mechanical strength, resisting vibration and shock—critical for rugged environments (e.g., aerospace, automotive).
Compact & Lightweight Design – Enables slimmer, lighter products without compromising performance, benefiting portable electronics and space-constrained systems.
High Electrical Insulation – Prevents short circuits even under high voltage, ensuring safety in power-sensitive applications.
Cost-Effective Longevity – Reduced cooling requirements (e.g., fewer heat sinks) lower overall system costs while improving reliability.

What Are Advantages of IMS PCB Technology?

What Are Applications of IMS PCB Technology?

Applications of IMS PCB Technology

LED Lighting: High-power LED systems (e.g., streetlights, headlights) for heat dissipation and durability.
Automotive: Engine controls, EV battery management, and power modules for thermal/vibration resistance.
Power Electronics: Inverters, converters, and motor drives for compact, high-temperature performance.
Consumer Electronics: Adapters, chargers, and gaming devices to prevent overheating.
Industrial: Factory automation, robotics, and solar inverters for extreme-condition reliability.

What Are Substrate Material Types of IMS PCB?

Aluminum (AL) Substrates

Most common, cost-effective, and lightweight.
Thermal conductivity: 1–4 W/m·K (standard) to 10–15 W/m·K (premium grades).
Best for: LED lighting, power supplies, and automotive electronics.

Copper (Cu) Substrates

Higher thermal conductivity (up to 400 W/m·K).
More expensive but ideal for ultra-high-power applications (e.g., EV inverters, high-density power modules).

Steel Substrates

Lower cost, but heavier and less thermally conductive (≈ 1–2 W/m·K).
Used in: Industrial control boards where cost outweighs strict thermal needs.

Ceramic Substrates (Alumina, AlN, BeO, SiN)

Ultra-high thermal conductivity (AlN: 80–200 W/m·K).
Brittle and expensive, but critical for aerospace, high-frequency RF, and high-power electronics.

Composite Substrates (e.g., Al+FR4 Hybrid)

Combines metal core with FR4 layers for mixed-signal designs.
Balances cost and thermal management in complex PCBs.

Choosing the Right Substrate:

For cost & general use: Aluminum.
For extreme heat dissipation: Copper or ceramics.
For rugged environments: Steel or hybrid composites.

IMS PCB Design Guidelines

Insulated Metal Substrate PCB Design Guidelines:

1. Material Selection

Base Metal: Aluminum (1060, 5052, 6061) or copper, thickness 0.5–3.0 mm.
Dielectric Layer: Epoxy resin with inorganic fillers (75–150 µm), thermal conductivity 8–12× FR4.
Copper Foil: 1–5 oz (35–140 µm), surface finishes: HASL, ENIG, OSP..

2. Layer Stackup

Single-Sided: Metal base → dielectric → copper circuit.
Double-Sided Hybrid: FR4 core + thermal vias for heat dissipation.
Multi-Layer: Metal-core layers interleaved with FR4 for complex routing.
Thermal Vias: Array of vias (≥0.3 mm dia) to conduct heat to the metal base.

3. Thermal Management

Thermal Resistance: IMS PCBs achieve 100× lower thermal resistance than FR4 (e.g., 0.15 mm dielectric vs. 1.6 mm FR4).
Heat Dissipation: Prioritize component placement near the metal base; use thermal vias for high-power devices.
Simulation: Validate thermal performance using ANSYS.

4. Electrical Performance

High-Speed Design:

Use stripline for signals >15 Gbps; microstrip for <15 Gbps.
Impedance control: 50Ω (single-ended), 100Ω (differential).
Dielectric material: Rogers 4350B (Dk=3.48, Df=0.0037) for frequencies >5 GHz.
Power Integrity: Dedicate power/ground layers; minimize via stubs in high-speed traces.

5. Manufacturing Considerations

Minimum Features:

Line/space: 0.075 mm (1 oz Cu) to 0.275 mm (5 oz Cu).
Drill size: Mechanical ≥0.3 mm, laser ≥0.1 mm.
Tolerance: Layer thickness ±8%, line width/spacing ±20%.
Surface Finish: ENIG for fine-pitch components; HASL for cost sensitivity.

6. Reliability & Testing

Thermal Cycling: -40°C to 125°C, 1,000 cycles with <5% delamination.
Insulation Resistance: >100 MΩ at 500V DC.
Dielectric Withstanding: AC 1,000V/1 min no breakdown.

7. Application-Specific Tips

LED Lighting: Place LEDs directly on the metal base; use thick copper (3–5 oz) for current paths.
Automotive/Aerospace: Prioritize CTE matching between dielectric and metal base to avoid thermal stress.

8. Design Rules Summary

Parameter	Recommendation
Dielectric Thickness	75–150 µm
Copper Weight	1–5 oz (35–140 µm)
Thermal Vias	Array density ≥10 vias/cm²
Minimum Trace/Space	0.075 mm (1 oz Cu)
Impedance Control	±10% tolerance

IMS Circuit Board Manufacturing Processes

IMS PCB Manufacturing Processes

1. Material Preparation

Base Metal: Aluminum (1060, 5052, 6061) or copper sheets (0.5–3.0 mm thickness), pre-laminated with copper foil (1–5 oz).
Dielectric Layer: Ceramic/boron-filled epoxy resin (75–150 µm), thermal conductivity 8–12× FR4.
Pre-Treatment: Clean metal surface, apply photoresist, and expose to UV light for pattern hardening.

2. Layer Stackup & Imaging

Lamination: Stack prepreg (epoxy-coated glass fiber), base material, and copper foil. Press at 150–200°C under 3–5 MPa.
Outer Layer Imaging: Use transparent film masks and UV exposure to define copper traces. Develop unexposed areas with alkaline solutions.

3. Etching & Drilling

Chemical Etching: Remove unprotected copper using ammonium persulfate or ferric chloride. Control etch time for inner layer precision.
Precision Drilling: CNC-controlled drilling (≥0.1 mm diameter, 150,000 RPM). X-ray alignment for through-holes and microvias.

4. Plating & Surface Finish

Electroless Copper: Deposit 1 µm copper on hole walls for interlayer conductivity.
Electroplating: Thicken copper to target weight (e.g., 35 µm) and apply tin shielding.
Surface Treatment: ENIG (electroless nickel/immersion gold), OSP (organic solderability preservative), or HASL (hot air solder leveling).

5. Thermal Management & Testing

Thermal Cycling: -40°C to 125°C for 1,000 cycles. Insulation resistance >100 MΩ at 500V DC.
Dielectric Testing: AC 1,000V/1 min without breakdown.
AOI (Automated Optical Inspection): Verify trace/space accuracy (±20% tolerance) and defect detection.

6. Final Fabrication & QA

CNC Routing: Shape boards with ±0.1 mm tolerance.
Silkscreen: Print identifiers, warnings, and component labels.
Packaging: Vacuum-seal with desiccant; include CoC (Certificate of Conformance) and material certs (e.g., UL 94V-0).

Why Choose Best Technology as IMS Circuit Board Manufacturer?

Reasons why choose Best Technology as IMS circuit board manufacturer:

Proven Thermal Expertise – Engineered for high-power applications with optimized heat dissipation.
Tight Tolerances (±0.05mm) – Precision manufacturing for demanding designs.
Fast Turnaround (24 hours Prototype, 5-7 days Production) – Accelerated timelines without quality compromise.
Turnkey Solutions – Full-service PCB manufacturing from design to delivery, accelerating your product’s time-to-market.
ISO 14001/ISO 13485 certification: medical/automotive customers are exempt from secondary testing, and compliance costs are reduced by 30%
Cost-Effective Solutions – Bulk discounts and material optimization reduce PCB costs.
Hybrid PCB Capabilities – Seamless IMS-FR4 integration for complex layouts.
ROHS/REACH Compliance – Eco-friendly materials for global market access.
Custom Dielectric Formulations – Tailored thermal conductivity (1.5–5.0 W/m·K).

Welcome to contact us if you have any request for IMS PCB: sales@bestpcbs.com.

Future IMS PCB Technology Trends

Advanced Thermal Materials‌

Use of ‌high-thermal-conductivity ceramics‌ (e.g., AlN, BeO) for extreme heat dissipation.
Development of ‌flexible IMS substrates‌ with better thermal performance.

Miniaturization & High-Density Interconnects‌

Microvias‌ and ‌HDI technology‌ for compact designs in automotive/5G applications.
Embedded components‌ (resistors, capacitors) to reduce footprint.

Automotive & EV Focus‌

High-power IMS PCBs‌ for ‌inverters, battery management, and motor drives‌.
AEC-Q200 compliance‌ for reliability in harsh environments.

Integration with AI & IoT‌

Smart PCBs‌ with embedded sensors for real-time thermal monitoring.
AI-driven design optimization‌ for thermal efficiency.

Sustainable Manufacturing‌

Lead-free, halogen-free materials‌ to meet RoHS/REACH standards.
Recyclable metal cores‌ (Al, Cu) for eco-friendly production.

High-Frequency & High-Speed Applications‌

Low-Dk dielectric materials‌ for 5G/mmWave RF applications.
EMI shielding integration‌ to minimize signal interference.

Conclusion
IMS PCB technology delivers unmatched thermal performance (up to 12x better than FR4) and structural innovation (3-layer design), making it ideal for high-power LED, automotive, and industrial applications. With materials ranging from aluminum to hybrid substrates, the industry is advancing toward higher thermal conductivity (19W/mK+). Best Technology combines precision (±0.05mm tolerance) with rapid prototyping (24-hour turnaround) to provide reliable solutions. Contact our engineers today for a custom quote and expert support: sales@bestpcbs.com.

Tags: IMS Circuit Board, IMS PCB Technology
Posted in best pcb, bestpcb, mcpcb, Metal Core PCB | No Comments »

Aluminium Metal Core PCB, China Aluminium Core PCB Factory

July 24th, 2025

Aluminium core PCB is a printed circuit board that uses aluminum as its base layer. It’s designed to transfer heat away from components quickly, keeping devices cool and stable. This makes it ideal for high-power applications like LED lighting, automotive systems, and power electronics.

Aluminium Metal Core PCB, China Aluminium Core PCB Factory

What is metal core pcb?

Metal core PCB, often called MCPCB, uses a metal base instead of the traditional FR4 or epoxy glass. This base is usually aluminium, copper, or a mix of both. Among them, aluminium metal core PCBs are by far the most popular due to their balance of performance, weight, and cost.

This core serves as the backbone of the PCB, offering strong thermal conductivity, mechanical support, and efficient heat dissipation. These properties make it ideal for high-power circuits where temperature control is critical.

Why use a metal core PCB?

Electronic components, especially high-power LEDs and MOSFETs, generate heat. If that heat stays trapped, it kills performance and shortens lifespan.

Metal core PCB fights this issue head-on. Its design allows heat to transfer quickly from the circuit layer to the metal base, keeping components cool and stable. That means fewer failures, longer device life, and lower maintenance.

They’re not just about heat. MCPCBs also improve structural strength, reduce size, and support higher component density. All these benefits combined make them a go-to for industries like automotive, telecommunication, aerospace, and medical devices.

What are the pros and cons of aluminum PCB?

Every material has its strengths and weaknesses. But in the case of aluminium PCBs, the pros are far more impressive than the cons.

Advantages:

Excellent Thermal Management: Aluminium pulls heat away from hot components, preventing damage.

Lightweight Yet Strong: Compared to copper, aluminium offers solid durability at a lower weight.

Cost-Effective: It’s more affordable than copper but delivers reliable thermal conductivity.

Eco-Friendly: Aluminium is recyclable and non-toxic, helping meet sustainability goals.

Improved Dimensional Stability: The structure remains stable even under changing temperatures.

Disadvantages (Very Few):

Slightly less flexible than FR4 in design.

Electrical insulation must be carefully managed to avoid short circuits.

Still, for most applications, these drawbacks are easily handled by professional manufacturers.

What does aluminum core mean?

Aluminum core PCB refers to a circuit board with three main layers:

Copper Circuit Laye: This is where your electronic components sit.

Dielectric Layer: An insulating layer that transfers heat to the core while isolating electricity.

Aluminium Base Layer: A thick base of aluminium that provides strength and heat sinking.

This core turns a standard PCB into a high-performance solution, especially for high-current and high-heat devices.

Why choose an aluminum core PCB?

There are many reasons to choose aluminum core PCB instead of traditional PCB. Its core advantages go far beyond temperature control. Here’s why they shine:

Superior Heat Dissipation: Keep components safe even in the most demanding power applications.

Durable Construction: Withstands mechanical stress and harsh environments.

Compact Design: Allows for smaller, thinner devices without sacrificing reliability.

Better Reliability: Lowers the risk of overheating, which often causes circuit failure.

Improved Energy Efficiency: Less heat means less energy wasted, which is a win in power-sensitive applications.

Great for LED Applications: Aluminium PCBs have become the backbone of LED lights due to their excellent thermal properties.

If your end product needs to perform well under pressure, aluminium core PCBs are a rock-solid choice.

How is aluminium PCB made?

The aluminium PCB manufacturing process is both precise and efficient. Here is a brief process of the aluminum substrate PCB factory:

Raw Material Preparation – Aluminium base is selected, cleaned, and pre-treated for bonding.

Dielectric Layer Application – An insulating, thermally conductive layer is laminated onto the aluminium.

Copper Cladding – A copper sheet is bonded on top of the dielectric.

Image Transfer – Circuit patterns are printed and developed on the copper layer.

Etching – Unwanted copper is removed, leaving the circuit behind.

Solder Mask and Silkscreen – Protective coatings and labels are added.

Surface Finish – Finishing like ENIG, HASL, or OSP is applied to improve solderability.

Testing – Electrical and visual inspections are done to ensure perfection.

BEST Technology’s modern factory uses automated production lines and strict quality control to produce high-reliability circuit boards at competitive aluminum plate prices.

How does PCB stackup affect heat?

The layer structure of a PCB controls how well it dissipates heat and shields signals. For aluminium metal core PCBs, the stackup typically follows this pattern:

Copper layer on top for components
Thin dielectric for thermal transfer
Thick aluminium base for heat sinking

This simplified layout boosts thermal flow. By reducing the thermal resistance between heat-generating components and the aluminium base, the heat escapes more efficiently.

A good PCB stackup design ensures low heat buildup, better EMI performance, and long-term reliability.

What is the difference between aluminum PCB and FR4?

FR4 PCBs use fiberglass-reinforced epoxy as the core. They’re cheap, widely used, and fine for low-power electronics. But they trap heat. When used in high-power circuits, the temperature rise can damage components.

Aluminum PCBs, on the other hand, replace the FR4 core with a metal core. This major change improves:

Heat transfer
Mechanical strength
Lifespan
Power capacity

Also, FR4 lacks the ability to dissipate heat efficiently, while aluminium PCBs can handle up to 10× better thermal flow. That’s why they dominate in LED lighting, automotive modules, and industrial drives.

What’s the thermal conductivity of aluminium core PCB?

The thermal conductivity of an aluminium core PCB depends on the dielectric layer and aluminium grade, but it usually ranges between 1.0 W/mK to 3.0 W/mK. Some high-end materials can reach up to 5.0 W/mK.

By comparison, FR4’s thermal conductivity is just 0.25 W/mK. That makes aluminium core PCBs around 4 to 20 times more effective at transferring heat.

Conclusion:

Aluminium core PCBs offer powerful thermal management, high durability, and compact design, making them ideal for modern electronics like LED lighting, power supplies, and automotive systems. Compared to traditional FR4 boards, they handle heat far more efficiently, ensuring longer device life and better performance.

Need a reliable aluminium core PCB manufacturer? Contact us at sales@bestpcbs.com

Tags: Aluminium Core PCB, aluminium core pcb manufacturer, aluminium metal core pcb, aluminum core board, Metal Core PCB
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Chip on Board LED Grow Light, COB LED PCB Manufacturer

July 24th, 2025

Indoor gardening has seen a boom in recent years, especially with the rise of efficient grow light systems. Among these, the chip on board LED grow light—often known as COB LED grow light—has gained popularity for its superior performance. But behind every powerful COB grow light lies a well-designed circuit board that manages everything from heat to power distribution.

In this article, we’ll explore how COB LEDs work and how to design a COB LED PCB to reach better performance. Let’s keep reading.

What Is a Chip on Board LED Grow Light?

A chip on board LED grow light is a type of lighting system where multiple LED chips are mounted directly onto a single substrate or circuit board. Instead of using dozens or even hundreds of individual LED diodes (like in traditional SMD LED grow lights), a COB LED light packs high-intensity chips closely together.

The COB LED PCB (Printed Circuit Board) not only holds these chips but also plays a crucial role in:

Conducting electrical signals efficiently
Managing heat buildup
Supporting the light’s physical structure

So while most people focus on the “light,” professionals know that a high-quality COB LED grow light starts with a reliable, well-designed circuit board.

Chip on Board LED Grow Light, COB LED PCB Manufacturer

Advantages of COB LED in Grow Lights

Why are so many manufacturers and indoor growers switching to COB technology? Here are some reasons.

Full Spectrum Light

A COB LED grow light full spectrum covers all wavelengths needed for healthy plant growth, including red, blue, and white light. So that plants enable to thrive in every stage—from seedling to flowering—without changing the light source.

High Light Intensity

Because multiple chips are placed together, COB LEDs deliver stronger, more focused light. This can improve canopy penetration and boosts PPFD (Photosynthetic Photon Flux Density), meaning more usable light reaches your plants.

Energy Efficiency

Compared to older HID or fluorescent lighting, COB LEDs use less electricity and produce less heat for the same or better results.

Longer Lifespan

Fewer components, better thermal design, and robust build quality allow COB LEDs to last for 50,000 hours or more—if the PCB is properly designed.

Compact Design

With fewer components, COB grow lights are thinner, lighter, and easier to install—perfect for small grow tents or professional setups.

Factors That Affect COB LED Grow Light Price

The COB LED PCB cost higher than normal LED PCB, do you know why? Here are some factors we summarized for your information:

1. Wattage & Size: More powerful lights require larger boards, thicker copper layers, and more robust cooling solutions.

2. Spectrum Design: Adding UV or IR wavelengths, or fine-tuning the spectrum to specific plant types, often requires specialized LED chips and tailored PCBs.

3. Heat Management: Better thermal control means more expensive materials—like aluminum, copper, or even ceramic substrates—to handle higher heat loads.

4. PCB Material & Build Quality: Cheap PCBs may use thin copper or poor insulation, which can lead to early failures. Investing in a high-performance COB LED PCB ensures long-term reliability.

Why Customizing COB LED PCB Matters?

For most lighting brands, buying standard COB LED modules can feel like a quick solution. But this approach comes with limitations:

You can’t control LED layout or spectrum design.
You may struggle with heat management in compact fixtures.
You depend on another supplier’s quality control, which risks inconsistencies.
Your products may look and perform like every other generic grow light.

By choosing to customize your COB LED circuit board, you gain:

Full control over chip placement and power design
Optimized thermal performance with proper materials and layouts
Enhanced durability for longer-lasting lights
A chance to differentiate your product in the market with unique features

In short, the circuit board is where you gain your competitive edge.

COB LED PCB for Grow Lights

Common Challenges in COB LED PCB for Grow Lights

Designing COB LED PCBs for grow lights isn’t just about putting LEDs on a board. There are critical challenges that require engineering expertise:

1. Overheating

High-power LEDs generate significant heat. Without proper thermal vias, heat sinks, and substrate materials, the board can overheat, shortening LED life.

2. Uneven Light Distribution

Poor chip placement can cause hot spots or dark areas in your grow tent, affecting plant growth.

3. Electrical Failures

Low-quality boards might use thin copper layers, poor soldering, or weak insulation—leading to power issues or early burnout.

4. Moisture Damage

Grow rooms are humid environments. Without protective coatings or water-resistant designs, PCBs can corrode or short circuit.

5. Compatibility Issues

Boards not designed for specific drivers or enclosures can cause assembly headaches or require costly redesigns.

How to Design COB LED Circuit Boards for Grow Lights?

When designing COB LED circuit boards for plant grow lights, three critical elements must be optimized: spectrum control, light intensity adjustment, and thermal management. Here are some tips that help you to design a COB LED circuit board:

1. Spectrum Matching

Select high-efficiency LED chips in red (660nm), blue (460nm), and far-red (730nm) wavelengths. Use high-density COB arrays to ensure full coverage of the effective photosynthetically active spectrum (400–780nm).

How to Design COB LED Circuit Boards for Grow Lights?

2. Light Intensity Control

Integrate dimmable circuits with adjustable output from 0–1000 μmol/m²/s. Enable smooth dimming to meet plant needs at all growth stages—from seedling to flowering.

3. Thermal Management

Use ENIG (Electroless Nickel Immersion Gold) surface finish and optimized heat paths. Pair the PCB with a die-cast aluminum housing for efficient heat dissipation. Ensure LED operating temperature stays below 50°C to prevent leaf burn.

4. Pad Design

Apply ENIG or gold plating for all bonding pads. Pad size should exceed chip size by 0.25–0.3mm to prevent misalignment or chip rotation.

Best Technology – Your Partner for COB LED PCB Customization

At Best Technology, we specialize in manufacturing high-performance COB LED circuit boards tailored for plant grow light applications. Whether you’re prototyping a new grow light or scaling up production, Best Technology provides reliable, cost-effective, and tailored PCB solutions that help your products thrive in a competitive market.

Expert assistance before, during, and after your order.
We welcome prototypes and small-volume runs.
Reliable quick production and on-time delivery.
High-quality PCBs with support for special requirements.
Skilled engineers with deep know-how in COB LED PCB design.
Over 19 years of expertise in PCB manufacturing.
Guaranteed reply to inquiries within 12 hours.
From bare PCB to PCBA and full assembly services.

Our Services for Grow Light Manufacturing

Prototype Development
Fast turnaround for small-batch testing
Custom circuit design tailored layouts for your power, size, and spectrum needs
Thermal Simulation & Optimization
Predict and resolve heat issues before production.
Full Testing including AOI, flying probe, thermal shock, and aging tests
From small batch to mass production, we scale with your needs

How to Start Your COB LED PCB Project?

To begin your COB LED PCB prototype, please prepare the following:

Application details (e.g., plant type, grow light usage)
Power specs (wattage, voltage, current)
LED chip info (model, quantity, layout) – if available
Board size and shape (dimensions, drawing or sketch)
Material preference (aluminum, copper, or ceramic) – optional
Thermal/environmental needs (max temperature, moisture protection)
Order quantity (prototype & production volume)
Target timeline (delivery date for samples)

Once we receive this, we’ll provide design suggestions, quotation, and lead time. Let’s build your custom COB LED PCB—contact us today.

If you’re ready to stand out in the competitive grow light market, start with the right foundation. A custom COB LED circuit board from Best Technology ensures your product is efficient, reliable, and built for success. Contact Best Technology today to customize your COB LED PCB.

FAQs

1. Can you support small batch COB LED PCB orders?

Yes, we welcome both small and large batch orders, perfect for prototyping and niche projects.

2. What materials are best for COB LED Grow Light circuit boards?

We recommend aluminum MCPCB for standard applications and ceramic (AlN) for high-performance needs.

3. How long does PCB prototyping take?

Prototyping typically takes 5–7 working days, depending on complexity.

4. Do you help with thermal design for COB PCBs?

Absolutely. We provide thermal simulation and layout support to ensure your board stays cool.

5. Can I get samples before mass production?

Yes, we offer samples so you can test quality and performance before scaling up.

Tags: chip on board led grow light, cob led grow light full spectrum
Posted in best pcb, bestpcb, FAQ, mcpcb, Metal Core PCB | No Comments »

LED bulb MCPCB, Aluminium MCPCB board for LED bulb

July 24th, 2025

LED bulb MCPCB is a metal-based circuit board designed to support and cool LED chips. It replaces standard PCBs in LED bulbs to handle high heat. Aluminum MCPCB is the most common type used in LED bulbs. It offers excellent heat transfer, improves bulb lifespan, and ensures stable lighting in compact spaces.

LED bulb MCPCB, Aluminium MCPCB board for LED bulb

What is LED bulb MCPCB?

LED Bulb MCPCB is a specialized type of circuit board designed to handle the unique demands of LED lighting. Unlike regular PCBs, it features a metal base—usually aluminium—that helps manage the intense heat LEDs generate.

In a compact bulb where space is limited, heat can build up quickly. The MCPCB works as a silent protector. It absorbs and transfers heat away from the LEDs, keeping the bulb cool, safe, and long-lasting.

The LED bulb MCPCB doesn’t just manage heat—it stabilizes performance. Without it, your bulb might flicker, burn out fast, or even overheat.

Why choose Aluminium MCPCB board for LED bulb?

Aluminium MCPCB boards are the go-to choice for LED bulbs. Why? Because aluminium delivers superior thermal conductivity, low cost, and lightweight properties. It keeps the LED components safe, efficient, and cool under pressure.

When you use an aluminium MCPCB board for LED bulb, you’re choosing durability without sacrificing design. Aluminium is also recyclable, which makes it a greener option for sustainable lighting. Plus, it resists wear and corrosion, helping your bulb last longer, even in tough environments like factories or outdoors.

This material is also easier to shape and fit into bulb housings. That makes the manufacturing process smoother and faster, which leads to better quality and more affordable LED lighting for everyone.

How is LED bulb MCPCB different from regular PCBs?

Most traditional PCBs use FR4, a fiberglass-based material that can’t handle high heat well. Regular PCBs might work in low-temperature electronics, but LED bulbs are a different story.

LEDs emit heat as they shine. If you use a regular PCB, the heat stays trapped, slowly damaging the LEDs. Over time, this leads to reduced brightness, shorter lifespan, and possible safety issues.

On the other hand, LED bulb MCPCBs, especially those made with aluminium, are heat masters. They move the heat away from sensitive components, improving efficiency and making your bulb last longer.

What is AC DC LED bulb MCPCB?

It refers to a special MCPCB used in bulbs that can operate with both alternating current (AC) and direct current (DC). These boards are equipped with additional circuitry to manage voltage conversion and stabilize current flow.

It can be used in various settings—homes, offices, emergency lighting, solar lighting.

An AC DC LED bulb MCPCB is ideal for markets where power sources vary. It keeps performance consistent, reduces the chance of failure, and expands the bulb’s usability.

How does LED bulb driver circuit work?

The LED bulb driver circuit is usually integrated into the MCPCB itself or connected to it. It converts high-voltage AC power into a lower-voltage DC current that LEDs need. It also stabilizes voltage fluctuations, protecting sensitive components.

Driver circuit controls the electrical input to the LEDs. It ensures the current stays steady and within safe limits. These circuits help cut down on energy waste, reduce heat, and extend the life of your bulb.

What is LED bulb MCPCB used for?

LED bulb MCPCBs are used in light bulbs. But there’s more to it.

They’re essential in any LED lighting that demands compact size, heat management, and long-term reliability. This includes:

Residential LED bulbs
Commercial ceiling lights
Emergency lighting
Solar-powered lamps
Automotive LED lights
Industrial high-bay lights

These boards can be customized in shape, layer count, and thickness to match specific lighting needs. From a tiny reading lamp to a streetlight, MCPCBs play a central role.

Can 15 watt LED bulb MCPCB handle heat well?

15 watt LED bulb MCPCB is typically made with thicker aluminium and better thermal vias. These help spread heat across a larger surface and transfer it efficiently to the bulb’s housing.

With smart layout and quality soldering, it can easily handle the thermal load. The key lies in choosing the right materials and thickness. At Best Technology, for example, we design each LED bulb MCPCB to match the wattage’s thermal needs, so it performs without breaking a sweat.

Is 50 watt LED bulb MCPCB durable enough?

50 watt LED bulb MCPCB usually include larger heat sinks and thicker copper layers to carry higher currents. It powers high-brightness lighting and must handle serious heat. They also feature stronger insulation layers to prevent breakdown over time.

Used in high-power LED floodlights, industrial lamps, or streetlights, 50 watt LED bulb MCPCBs are built for endurance. Their design ensures thermal resistance, electrical stability, and rugged durability.

What is the difference between MCPCBs for LED bulbs of different watt?

As the wattage goes up, the complexity and strength of the board must increase. Here’s how they differ:

9W LED bulb MCPCB: Thin, compact, ideal for home lighting.

12W LED bulb MCPCB: Slightly thicker, handles more heat, often used in ceiling lights.

15W LED bulb MCPCB: Needs improved heat sinking, used in brighter spaces.

18W LED bulb MCPCB: Stronger thermal design, may require larger base.

50W LED bulb MCPCB: Built like a tank. Thicker copper, extra thermal vias, more robust structure.

Also, pricing varies. A 9W LED bulb MCPCB price is lower. A 50 watt LED bulb MCPCB will cost more due to the materials and design complexity.

Conclusion:

LED bulb MCPCB combines heat dissipation, power and performance in one compact circuit board. Choosing an aluminum MCPCB board for LED bulb gives you better thermal control, longer life, and safer operation.

Want custom or bulk LED bulb MCPCBs tailored to your project? Reach out to sales@bestpcbs.com

Tags: 12w led bulb mcpcb, 9w led bulb mcpcb price, ac dc led bulb mcpcb, led bulb circuit, led bulb driver circuit, LED Bulb MCPCB, LED Bulb PCB
Posted in best pcb, bestpcb, mcpcb, Metal Core PCB | No Comments »

What are the Pros and Cons for China IMS PCB vs PCB?

July 24th, 2025

China IMS PCB offers a new level of thermal performance compared to standard PCB, and that is why it has become the top choice for power electronics and LED applications. But is it always better than traditional PCB? Let’s explore the answer in detail.

Best Technology is a reliable IMS PCB manufacturer and turnkey PCB Manufacturing service provider in China. We cater IMS PCB prototype, mass production, IMS PCB SMT assembly, and box build services in a truly free market. If you are looking for a decent quality China IMS PCB factory that is equipped with the cutting-edge manufacturing equipment and inspection apparatus, complete QC system, and strict test means, then Best Technology is the way to go. For specific IMS in PCB questions and inquiries, please email us from our Contact Us page on the website.

What are the Pros and Cons for China IMS PCB vs PCB?

What Does China IMS PCB Mean?

China IMS PCB stands for Insulated Metal Substrate PCB, manufactured by Chinese IMS PCB manufacturers. IMS PCB, also known as thermally conductive PCB, thermal PCB board, thermal Management PCB, and IMPCB.

In China IMS PCB, the circuit is built on a metal base, usually aluminum or copper. The core of IMS technology lies in its thermally conductive yet electrically insulating layer, which sits between the metal base and the copper circuit layer. This dielectric is usually filled with ceramic particles, allowing it to conduct heat efficiently while keeping the electrical signals isolated. The thermal conductivity of this insulating layer typically ranges from 1 to 3 W/m·K, but some advanced materials used in high-end applications can exceed 5 W/m·K. Besides ceramic-filled materials, some IMS boards use advanced polymer-based insulating layers, which offer flexibility in thickness and can be tailored for specific thermal or electrical needs.

This design improves heat dissipation and structural strength. Unlike regular PCB made of FR4 material, IMS boards handle higher power loads with ease. Many China-based factories now focus on IMS production due to the growing demand in automotive, LED, and industrial sectors.

Who Are the Best China IMS PCB Manufacturers?

Choosing the right manufacturer can affect quality and cost. Best Technology is a trusted name for China IMS PCB. We follow IPC standards, apply MES systems for traceability, and offer real-time quality monitoring. Our strength lies in custom thermal design, fast delivery, and flexible order sizes. Other reputable suppliers include A-Tech Circuits and JLCPCB.

What Is China IMS PCB Price?

The price of China IMS PCB depends on more than just size. Materials, design complexity, and special processing all affect the cost. Below is a detailed explanations to help you understand the key pricing factors.

1. Material Type

Aluminum-Based IMS PCB: This is the most common choice due to its balance of cost and thermal performance. A 1.5mm thick aluminum IMS board typically costs around $0.20 per square inch.
Copper-Based IMS PCB: Provides better thermal conductivity and durability, especially for harsh environments, but usually costs 1.5 to 2 times more than aluminum-based boards.
Dielectric Layer: Thermal insulation materials filled with ceramic or polymer vary in price. High-conductivity dielectrics (>3 W/m·K) cost more than standard ones.
Specialty Fillers: Advanced options like boron-filled dielectrics offer improved thermal stability but increase material cost by 10%–25%, depending on the formulation.

2. Thickness and Size

Thicker Metal Cores (>2mm): These require more raw material and longer machining time, raising both material and processing costs.
Larger Panel Size: Increases raw material use and slows production speed, slightly raising the per-unit price.

3. Layer Count

Single-Layer IMS PCB: Most cost-effective; ideal for heat-sensitive, low-complexity designs.
Double or Multi-Layer IMS PCB: Involve complex bonding and precision drilling, which increases both material cost and labor. These are 10%–30% more expensive than single-layer versions.

4. Surface Finish and Special Processing

Surface Treatments: Options like ENIG or OSP add to the price. ENIG, for instance, offers better corrosion resistance but is costlier than basic HASL finishes.
Diamond Cutting: Needed for clean edge finishes on thicker metal cores. This adds a processing premium of around 5%–10%.
Solder Mask Type: High-temperature solder masks or UV-curable masks may also increase pricing slightly.

5. Comparison to FR4 PCB

On average, China IMS PCB cost is 20%–50% higher than standard FR4 PCBs of similar dimensions.
For example, a 1.5mm FR4 board might cost $0.10 per square inch, but lacks the heat handling and strength of IMS.
The additional cost is often offset by the longer lifespan and reduced maintenance of IMS in demanding applications.

6. Order Volume

Prototype Orders: Most Chinese suppliers allow no MOQ and quick turnaround for prototypes.
Small Batch Orders: May include engineering setup fees ($20–$50) for design validation and tooling.
Mass Production: Larger orders reduce cost per unit. Many suppliers offer tiered pricing, with better rates for orders over 1,000 units.

7. Value in High-Power Applications

IMS PCBs perform better under thermal stress, so they reduce failure rates in power electronics, LEDs, and automotive systems.
The higher upfront cost often pays off through longer service life and fewer field failures.

In summary, when assessing China IMS PCB price, it’s important to consider material type, layer count, special processing like boron-filled insulation, and order size. While IMS boards cost more than FR4, they deliver better thermal performance and reliability, especially in power-hungry designs. Over time, this can reduce maintenance costs and improve product lifespan—making IMS a smart investment for many applications.

Why Do I Need China IMS PCB?

Thermal control is key in electronics. IMS in PCB helps to reduce heat buildup, which protects components and maintains performance. Applications such as LED lighting, power supplies, and EV chargers often generate excess heat. In these cases, using China IMS PCB can prevent failure. Also, the mechanical strength of metal-core boards improves vibration resistance. If your design needs better heat flow, IMS is worth the extra cost.

What Is the Difference: China IMS PCB vs PCB?

The main difference is in material and thermal performance. Standard PCB uses FR4, a fiberglass material, while IMS uses metal cores. FR4 PCBs have low heat conductivity (0.1 to 0.5 W/m·K), but IMS boards range from 1 to 12 W/m·K. This makes China IMS PCB ideal for high-power systems. However, IMS is less flexible in multilayer designs and costs more. On the other hand, FR4 is cheaper and easier for complex routing. So the choice depends on the application.

What Are the Pros and Cons for China IMS PCB vs PCB?

Here is a clear view of the pros and cons:

Pros of China IMS PCB

Superior Thermal Control: Prevents overheating and extends component life.
High Mechanical Strength: Reduces warping and improves durability in harsh environments.
Ideal for Power Applications: Handles high currents with minimal heat rise.
Better Heat Flow: No need for thermal vias, direct heat spread through metal core.

Cons of China IMS PCB

Higher Cost: Material and tooling cost more than FR4 PCB.
Limited Layer Count: Not suitable for complex, multilayer circuits.
Thermal Stress Risks: Poor bonding or design can cause delamination in low-quality boards.

Why Choose Best Technology as Your Dependable IMS PCB Manufacturer?

At Best Technology, we understand the headaches customers face when sourcing China IMS PCB. Poor thermal design, weak bonding, and long lead times can all lead to delays and failure. We solve these with:

Thermal Simulation Support: We offer thermal modeling to guide your design and prevent hotspots.
Advanced Materials: Our boards use hybrid cores and optimized dielectrics to improve heat flow and reduce stress.
Reliable Production: Our MES system ensures traceability, and all boards pass IPC-compliant testing like thermal cycling. And all the fabrication process is in line with ISO 9001, ISO 13485, IATF 16949, AS9100D, UL, REACH, RoHS.
Flexible Orders: We support no-MOQ prototypes and offer higher quality mass orders with short lead time.
Application-Specific solutions: As we have 19 years of accumulation in the rapidly evolving world of electronics, you will get the benefits from our rich experience and technical knowledge to help you choose between FR4/IMS and get an ideal solution.
Expert Support: From quoting to delivery, our engineers assist you in every step, ensuring clear communication and fast turnaround.

Our clients appreciate not only our quality but also our commitment to problem-solving. With China IMS PCB, success is in the details, and we handle those with care.

Why Choose Best Technology as Your Dependable IMS PCB Manufacturer?

To sum up, China IMS PCB brings real advantages in heat management, mechanical strength, and durability. While it comes at a higher cost, the benefits often justify the price in high-power settings. However, design and manufacturing skills make a significant difference.

That’s why working with Best Technology gives you ‌unmatched precision, reliability, and cutting-edge solutions tailored to your needs.‌ Our thermal modeling, strict quality control, and fast delivery remove the usual risks. So if you need reliable IMS PCB solutions, contact us today for a quote. Our engineers are very responsible, caring, professional, experienced, and knowledgeable. They were always available to discuss your case and have returned your phone calls in a timely manner. Please discuss your full requirements with our teams at +86-755-2909-1601 or sales@bestpcbs.com.

Tags: China IMS PCB, China ims pcb vs pcb
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Turnkey China MCPCB LED Board with Flexible Solutions

July 23rd, 2025

China MCPCB LED board suppliers are now offering more flexible, fast, and dependable solutions to global lighting brands. Whether you’re a startup or scaling up, choosing the right Chinese PCB manufacturer makes a real difference. In this blog, we’ll go through the core questions customers usually ask and how a reliable partner like Best Technology can simplify the buying experience.

Best Technology provides high-quality China MCPCB LED boards and delivers trustworthy and reliable LED PCB assembly services to the very large market. We are most trustworthy in optimizing our supply chain, offering high-mix MCPCB LED boards selections, achieving high yield, maintaining a stable manufacturing process, ensuring short lead times, providing fast after-sales service, and preserving quality consistency.

There are some well-known brands that make a long-term relationship with us. And we still maintain a high customer retention rate. If you would like to inquire about any MCPCB LED boards, our team is always available to discuss your project details by phone or email and provide viable solutions. Our phone number is +86-18923412995. Email sales@bestpcbs.com is also ok. You can also talk to us online via this link.

Turnkey China MCPCB LED Board with Flexible Solutions

Who Provides China MCPCB LED Board?

There are hundreds of Chinese PCB manufacturers, but only a few specialize in MCPCB LED boards. These boards, made with metal core bases like aluminum or copper, need professional manufacturing. Reliable suppliers like Best Technology focus on high-precision drilling, consistent thermal conductivity, small-batch support, lead time reduction, and complete material traceability. Our strength lies in combining fabrication with engineering—so you don’t just get a board, you get a well-designed, ready-to-use solution.

What Is China MCPCB LED Board Price?

China MCPCB LED board price depends on size, copper thickness, layer count, and surface finish. Smaller boards with standard specs may cost as low as $0.20 per piece. More advanced types like high-wattage copper-core boards cost more. But what truly matters is not just low pricing—it’s the value. Best Technology offers reasonable pricing thanks to bulk raw material sourcing and automatic MES tracking. We help you control costs while meeting strict technical demands.

What Are the Advantages of Buying MCPCB LED Board from Chinese PCB Manufacturers?

There are clear benefits of working with Chinese PCB manufacturers:

Speed: Fast quoting, short lead times, and on-time shipping.
Cost efficiency: Lower labor and material costs reduce your expenses.
Technical support: Experts help you with MCPCB design suggestions before production.
Turnkey service: From prototyping to mass production and assembly.

Best Technology stands out with in-house DFM checking, thermal simulation tools, and a full testing line including flying probe, AOI, and X-ray inspection. We are a qualified MCPCB LED board factory, compliant with ISO 9001, ISO 13485, IATF 16949, AS9100D, UL, REACH, RoHS. That ensures reliability, not just savings.

Where to Use China MCPCB LED Board 12V?

China MCPCB LED board 12V is widely used in LED lighting systems. You’ll find them in:

LED ceiling lamps
Swimming Pool Light
Street lighting
Backlight modules
Automotive LED systems
Medical devices

12V MCPCBs are stable, easy to integrate, and safe for both indoor and outdoor use. Best Technology supports customization in wattage, dimensions, and surface coating so customers can build to spec with no worries.

Where to Get MCPCB Design?

MCPCB design plays a key role in thermal control and product life. If the layout is poor, LEDs overheat or fail. Many buyers don’t have in-house engineers, so they turn to manufacturers. Best Technology provides one-on-one design guidance with quick CAD reviews and thermal modeling support. Whether you want a single-layer or complex structure, our team helps optimize the circuit to match your exact requirements.

How to Ensure Quality of MCPCB Board Buy from Chinese PCB Manufacturers?

When you buy an MCPCB board from a Chinese supplier, you’re not just looking for specs on paper—you want dependable and repeatable quality. At Best Technology, we follow strict IPC standards and use a MES system to track every production step. Full material traceability is built into our process to avoid mix-ups and ensure consistency.

We understand that many buyers have had issues before—poor plating, misaligned drilling, or weak thermal bonding. To address these concerns, we carry out a full range of quality checks, including:

100% electrical testing to verify open and short circuits
Solderability tests to confirm pad surface finish integrity
Insulation resistance measurement to ensure safety in high-voltage applications
Thermal aging tests, following a standard of 85°C at 85% RH for 1000 hours, to assess long-term stability under harsh environments
Thermal resistance (Rth) tests, critical for MCPCB performance, to verify heat dissipation efficiency
X-ray inspection, especially for boards with buried vias or inner layer bonding, to detect voids or misalignment inside the structure

We also provide complete test reports for your approval before final shipment. This way, you know exactly what quality level you’re getting.

Why Choose Best Technology for Your Dependable China PCB Manufacturer?

Best Technology doesn’t just sell boards. We solve problems. Many customers come to us because they struggled with vague communication, poor DFM checks, or unstable lead times elsewhere. Here’s how we help:

Fast response: Quotes in 4 hours, engineering reply in 12 hours.
Clear tracking: MES system shows real-time production status.
Certifications: ISO 9001, IATF 16949, ISO 13485, and AS9100D.
Flexibility: Low MOQ, urgent builds, and trial runs supported.
Full transparency: From stack-up to material sourcing.
One-stop service: We provide material procurement, MCPCB design, MCPCB prototype, mass production, and MCPCB assembly service under one roof.
Customization: No matter whether you need single-layer MCPCB, two-layer MCPCB, multi-layer MCPCB, COB MCPCB, double-sided MCPCB, or IMS PCB, we present support without any MOQ.

We take quality control seriously. For example, our X-ray checks verify LED solder joints inside aluminum MCPCBs. Our team supports multiple markets—automotive, aerospace, medical, and general lighting. You can always reach out to our teams for any concerns. Our sales engineers possess strong technical knowledge, allowing them to address your issues directly. When you encounter difficulties, our sales team will provide you with the appropriate answers and solutions without making you wait for responses from the engineers.

Why Choose Best Technology for Your Dependable China PCB Manufacturer?

To summarize, if you’re tired of delays, unclear specs, or inconsistent product quality, then it’s time to try a new partner. At Best Technology, we offer not just China MCPCB LED board manufacturing but a whole process of support. From smart design to final shipment, we’re here to back you up. For more information or if you would like to send us any inquiry, please send us an email through the contact form at the bottom of our Contact Page.

Tags: MCPCB LED Board
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MCPCB Material, Metal Core PCB – MCPCB Manufacturing

July 23rd, 2025

MCPCB is mainly made of copper foil, a dielectric layer, and a metal core. The copper layer handles current flow and signal transmission. The dielectric layer sits beneath it, offering electrical insulation while allowing heat to pass through. At the base, the metal core—usually aluminum or copper—acts as a heat sink. Aluminum is lightweight and cost-effective, while copper delivers better thermal performance.

MCPCB material, Metal core PCB - MCPCB Manufacturing

What is MCPCB?

MCPCB, or Metal Core Printed Circuit Board, is a type of PCB that uses a metal base to improve heat dissipation.

Unlike standard FR4 boards, which use fiberglass, MCPCB boards use metals like aluminum, copper, or even a mixture. That metal layer acts as a heat sink, pulling heat away from components.

This makes MCPCB ideal for LED lights, high-power electronics, and automotive systems. They’re strong, thermally efficient, and can take a beating.

What is the structure of Mcpcb?

The basic structure of an MCPCB is relatively simple, but each layer plays a critical role. It usually consists of three key layers:

Copper Circuit Layer: The top layer for routing signals, just like in traditional PCBs. It’s often thicker in MCPCBs to handle high currents.

Dielectric Layer: This sits between the copper and the metal base. It provides electrical insulation while enabling heat transfer.

Metal Core Base: Usually made of aluminum, copper, or a hybrid alloy. This is the foundation that supports the board and helps spread heat efficiently.

Some MCPCBs even feature multi-layer stackups, combining several circuit and dielectric layers with a central metal core.

What are the materials in Mcpcb?

The most commonly used materials in MCPCB manufacturing are aluminum, copper, and steel alloys. This is the heart of the MCPCB.

Aluminum: Most cost-effective and widely used. Lightweight, corrosion-resistant, and a good thermal performer.

Copper: Offers better thermal conductivity, but it’s heavier and more expensive.

Stainless Steel or Alloys: Used in high-strength or custom applications.

Each MCPCB raw material brings different strengths. Picking the right one is about balancing performance, cost, and durability.

What are the differences between MCPCBs of different materials?

Different MCPCB materials impact cost, conductivity, weight, and reliability.

Aluminum MCPCB: Most popular for LED applications. It offers decent conductivity and costs less. It’s also easy to process and lightweight.

Copper MCPCB: Ideal for high-performance needs. With thermal conductivity up to 390 W/mK, it’s a powerhouse. But it’s heavier and more expensive.

Steel alloys MCPCB: These combine metals for specific thermal and mechanical needs. For example, aluminum-copper blends.

Choosing the right type depends on your priorities—is it price, heat handling, weight, or ruggedness?

How to make mcpcb?

The MCPCB manufacturing process requires high precision. Here’s how it typically works:

Metal Base Preparation: The selected metal core (usually aluminum or copper) is cleaned and prepared for lamination.

Dielectric Application: A thin dielectric layer is applied using lamination or coating methods. This layer needs to be uniform to maintain consistent heat flow and insulation.

Copper Lamination: A copper foil is laminated on top of the dielectric. The thickness varies depending on current needs.

Circuit Imaging and Etching: The copper layer is printed with the circuit design and etched to form the signal paths.

Solder Mask and Surface Finish: Protective coatings are applied to prevent oxidation. Then surface finishes like OSP, ENIG, or HASL are added for solderability.

Drilling and Routing: Holes are drilled, and the board is routed to its final shape. V-cuts or scoring may be added for separation.

Testing: Every board is electrically and visually tested to ensure it meets performance standards.

The result is a durable, heat-efficient PCB ready for demanding environments.

What is the difference between FR4 and Mcpcb?

FR4 is a glass-reinforced epoxy laminate used in standard PCBs. It’s strong, affordable, and widely available.

MCPCB, by contrast, can handle much higher thermal loads. Thanks to the metal core, it can draw heat away from critical components. That means longer lifespan, better performance, and fewer thermal failures.

Another difference is mechanical. MCPCB boards are more robust and rigid, while FR4 can be more fragile under stress or heat. The trade-off? FR4 is cheaper. But for high-power or LED uses, MCPCB is well worth the investment.

What is the difference between ceramic PCB and Mcpcb?

Both ceramic PCBs and MCPCBs excel in thermal management. But their core material and applications differ.

Ceramic PCBs use ceramic substrates like aluminum oxide or aluminum nitride. These have excellent electrical insulation and can withstand high temperatures. They’re common in aerospace and medical electronics.

MCPCBs use a metal core with a dielectric layer. They balance thermal efficiency and cost, making them ideal for mass-market products like LED lighting.

Ceramic PCBs are better for ultra-high-performance, but MCPCBs offer a smart solution for most thermal challenges at a more affordable cost.

How thick is the copper in Mcpcb?

The copper layer thickness in MCPCB can range from 1 oz to 6 oz (35μm to 210μm). Thicker copper means:

Better current carrying capacity
Improved durability
Enhanced thermal management

For LED applications, 1–2 oz is common. High-power systems may need 3 oz or more. It all depends on the current load and thermal performance needed.

What is the thermal conductivity of Mcpcb?

One of the most important specs of an MCPCB is its thermal conductivity, usually measured in W/mK.

The dielectric layer in standard MCPCBs typically ranges from 1.0 to 3.0 W/mK.

High-end materials may reach up to 10 W/mK or more.

The metal base (aluminum or copper) naturally has higher thermal conductivity. Copper can hit 390 W/mK, while aluminum is around 200 W/mK.

High thermal conductivity means faster heat transfer, lower operating temperatures, and greater reliability over time.

What is the use of Mcpcb?

MCPCB is used where heat is the enemy. You’ll see it in:

LED lighting modules (street lamps, automotive lights, flashlights)
Power converters
Motor controllers
Telecom base stations
Automotive electronics
Industrial machines

Why? Because MCPCB keeps everything cool. When heat drops, performance goes up, and failures go down.

Conclusion:

If your project demands high heat resistance, reliability, and space efficiency, MCPCB material is the key. Whether it’s for LED lighting, automotive systems, or high-performance power applications, the right mcpcb material makes all the difference.

Looking for a reliable MCPCB manufacturer? Email us at sales@bestpcbs.com

Tags: aluminum pcb, mcpcb manufacturing, mcpcb material, mcpcb raw material, Metal Core PCB
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20 oz Copper PCB Design Guideline for High Current

July 23rd, 2025

How to design 20 oz copper PCB for high current? Let’s explore thickness, specifications, benefits, application and design guideline for 20 oz copper PCB.

Are you worried about these problems?

PCB circuits are prone to overload and burn in high current scenarios.
The heat dissipation solution takes up space and is expensive.
The yield rate of thick copper plate processing fluctuates greatly.

The services Best Technology can provide:

The 20oz ultra-thick copper foil design has a current carrying capacity that is 3 times that of conventional PCBs. It can stably carry 150A continuous current through thermal simulation verification.
The patented copper-based composite structure and built-in heat conduction channel realize PCB self-heating, saving 40% of the cost of peripheral heat dissipation components.
The unique step-by-step pressing process, combined with full-process quality control, ensures that the batch production yield rate is stable at more than 95%.

Welcome to contact Best Technology if you have any inquiry for copper PCB: sales@bestpcbs.com.

What Is a 20 oz Copper PCB?

A 20 oz copper PCB utilizes a 700μm-thick copper layer (equivalent to 20 ounces per square foot), significantly exceeding standard copper weights to achieve exceptional electrical performance. This extreme copper thickness minimizes resistive losses (I²R heating) while enabling current handling capabilities exceeding hundreds of amperes, making it essential for high-power systems requiring stable operation under intense loads.

Its substantial copper mass provides superior thermal conductivity (>380 W/m·K), efficiently dissipating heat toward heatsinks or enclosures to maintain operating temperatures within safe limits. Fabrication demands specialized processes like stepped lamination and high-temperature resins to prevent delamination, ensuring structural integrity during repeated thermal cycles. These boards serve critical roles in electric vehicle charging systems, industrial power converters, and energy distribution infrastructure where reliability under sustained high loads is non-negotiable.

How Thick Is 20 oz Copper PCB?

The thickness of a 20 oz copper layer in a PCB is approximately 700 micrometers (μm) . This measurement is derived from the industry standard where 1 ounce (oz) of copper per square foot equals roughly 35 μm in thickness, utilizing copper’s density and unit conversion principles.
Due to manufacturing tolerances, the actual copper thickness may vary by ±10%, resulting in a typical range of 630 μm to 770 μm for 20 oz copper PCBs.

20 oz Copper PCB Specifications

Parameter	Specification
Copper Thickness	700μm (20 oz) ±10%
‌Current Capacity	100A+ continuous
Base Material	1-3mm thick copper core (99.95% purity)
‌Thermal Conductivity	400W/(m·K) (copper core)
Insulation Layer	50-100μm ceramic (Al₂O₃/AlN), >3kV breakdown
‌Min Trace Width	12mil (0.3mm)

Benefits of 20 oz Copper Base PCB

Extreme Current Handling – Supports 100A+ continuous current (3x standard PCBs), ideal for high-power applications like EV chargers and industrial inverters.
Superior Thermal Management – Copper core dissipates heat 60% faster than aluminum, reducing hotspots and extending component lifespan.
Space-Saving Design – Thick copper (700μm) allows narrower traces (12mil vs. 6mm for equivalent current), saving PCB area.
High Reliability – Resists thermal cycling fatigue, 3x longer lifespan in high-temperature environments vs. standard PCBs.
Lower Resistance – Pure copper base reduces conductive losses by 40%, improving energy efficiency.
High-Frequency Performance – Smooth copper surface (Ra<0.5μm) minimizes signal loss for RF/5G applications.
Mechanical Strength – Copper core prevents warping under heavy components (e.g., IGBT modules).

When to Use 20 oz of Copper PCB?

Applications of 20 oz copper PCB:

High-Power Electronics – Ideal for EV charging systems, industrial motor drives, and power converters requiring minimal resistance and efficient heat dissipation.
RF & Telecommunications – Best for 5G base stations and satellite communication equipment where signal integrity and thermal stability are crucial.
Heavy-Duty Power Switching – Suitable for welding machines, server power supplies, and UPS systems handling extreme current surges.
High-Brightness LED Systems – Used in stadium lighting and industrial LED arrays where active cooling is necessary to maintain performance.
Automotive Power Modules – Optimal for EV inverters and battery management systems needing compact, high-current designs.
High-Temperature Industrial Equipment – Applied in machinery where prolonged thermal cycling and reliability are key factors.

What Is Difference between 16 oz and 20 oz Copper PCB?

Comparison Aspect	16 oz Copper PCB	20 oz Copper PCB
‌Copper Thickness‌	~560 μm	~700 μm
‌Current Carrying Capacity‌ (at same trace width)	Handles high currents (e.g., ~80A for 10mm width)	Handles high currents (e.g., ~80A for 10mm width)
‌Thermal Management	Good heat dissipation, suitable for moderate-power apps	Superior heat spreading, minimizes hotspots by 15-20%
‌Space Efficiency‌ (trace width for same current)	Requires wider traces (e.g., 6mm for 30A)	Enables narrower traces (e.g., 4.8mm for 30A), saving PCB area
Manufacturing Cost & Difficulty	Higher cost than standard PCBs, moderate etching challenges	Highest cost due to complex etching and material use
Applications	Industrial motor drives, UPS systems	EV fast chargers, server power supplies (>500A surges)

How to Design 20 oz Copper PCB for High Current?

20 oz Copper PCB design guideline for High-Current

1. Copper & Trace Design

Current Capacity: Use I = 0.048×ΔT^0.44×(W×H)^0.725 (IPC-2221). 20 oz copper (700µm): 15mm width supports ~100A at ΔT=30°C.
Trace Compensation: 2 oz: Add 0.2mm width; spacing ≥0.25mm; 4 oz: Critical traces ≥1.5mm wide; spacing ≥0.4mm.
Plane Layers: Use full-layer planes for currents >30A (lower impedance, better heat spread).

2. Thermal Management

Via Arrays: Place ≥0.3mm vias under power devices (pitch ≤1.5mm). Fill with thermal paste to connect to bottom copper, cutting thermal resistance by >50%.
Exposed Copper: Remove solder mask for direct air cooling (2–3× heat dissipation). Apply ENIG/HASL for oxidation resistance.
Embedded Copper: For >50A, embed 1.5mm copper blocks in FR4 layers (reduces local temps by ≥30°C).

3. Layer Stackup

Multilayer Structure: “Sandwich” stackup (power layer – insulating layer – 2 oz copper + 1mm aluminum). Inner layers use stepped copper (0.5–4 oz) to reduce Z-axis stress.
Prepreg: High-resin (e.g., 2116) for 85%+ fill. Board edges reinforced with epoxy slots (30% stronger).

4. Manufacturing

Etching/Plating: Use LDI for 3/3mil traces; pulse plating for ≥25µm hole copper (uniformity >90%).
Lamination: Pre-press 180°C/40min/15kg/cm²; full press 200°C/90min/25kg/cm²; cool ≤3°C/min.

5. Safety & Compliance

Clearance: AC/DC ≥6mm; creepage ≥8mm/1000V (IEC 60664).
Protection: 132°C TCO + current sensor; TVS diodes ≤5mm from connectors.
Isolation: Optocouplers/transformers for AC-DC; primary-secondary spacing ≥8mm.

6. Verification

Thermal Sim: ANSYS Icepak/Simcenter for device temps (MOSFET Tj <125°C). Current Density: SIwave maps; avoid >500A/cm² (prevents electromigration).
Testing: Infrared scan for hotspots; key paths ΔV <2% (e.g., <0.24V for 12V).

Client Design Tips:

Cost vs. Performance: 20 oz suits 50A+ but needs via arrays/aluminum.
Fabricator: Choose LDI/pulse-plating vendors.
Lead Time: Add 3–5 days for custom stacks; confirm impedance upfront.

How to Design 20 oz Copper PCB for High Current?

Why Choose Best Technology as Your Copper PCB Manufacturer?

24-hour rapid prototyping: shorten the R&D cycle by 50% and accelerate product launch.
1 Piece MOQ & Competitive Pricing – No hidden costs, offering the best value without compromising quality.
Thermal Solution Consulting: Free CFD simulation identifies optimal airflow paths.
Turnkey Solutions – Full-service PCB manufacturing from design to delivery, accelerating your product’s time-to-market.
ISO 14001/ISO 13485 certification: medical/automotive customers are exempt from secondary testing, and compliance costs are reduced by 30%.
Free DFM (Design for Manufacturability) Analysis: Optimizes PCB layouts to reduce material waste, lower production costs, and avoid late-stage design revisions.
Rigorous quality control: directly reducing your maintenance costs by 40% while extending product lifespan.

If you have any request for copper base PCB, welcome to contact us to get a free quote: sales@bestpcbs.com.

Tags: 20 oz Copper PCB, copper pcb
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