Heavy copper PCB is designed for applications that need higher current capacity, stronger thermal performance, and better mechanical reliability than standard circuit boards can offer. It is widely used in power electronics, industrial control, automotive systems, energy equipment, and other high-load environments.
At EBest Circuit, we manufacture heavy copper boards with stable process control, practical DFM support, and flexible build options for both prototype and production orders.
What Is a Heavy Copper PCB?
A heavy copper PCB is a printed circuit board built with much thicker copper conductors than a conventional PCB. In the PCB industry, the term usually refers to boards with 3 oz/ftÂČ to 10 oz/ftÂČ copper on the inner layers, outer layers, or both. For more demanding power applications, extreme heavy copper PCB can reach 20 oz/ftÂČ to 200 oz/ftÂČ.
These boards are built to handle:
Higher current loads
Better heat transfer
Improved resistance to thermal stress
Longer service life in harsh operating conditions
Compared with standard copper boards, heavy copper PCBs are better suited for power conversion, current distribution, and heat-intensive designs.
Heavy Copper PCB
Why Choose Heavy Copper PCB?
When a design involves high current, high power density, or repeated thermal cycling, standard copper thickness may no longer be enough. Heavy copper PCB provides a more reliable platform for these conditions. Below are the key benefits of using heavy copper PCB:
Higher Current Carrying Capacity
Thicker copper traces can carry more current safely and reduce the risk of overheating.
Better Thermal Management
Heavy copper helps spread and transfer heat more effectively, which supports stable performance in power circuits.
Improved Mechanical Strength
The copper structure adds durability and helps the board withstand demanding operating environments.
Better Reliability in Harsh Conditions
Heavy copper boards perform well in applications exposed to vibration, thermal shock, and continuous electrical load.
Fewer Design Limits for Power Routing
For power electronics, thicker copper offers more flexibility when routing high-current paths.
Heavy Copper PCB
Typical Applications of Heavy Copper PCB
Heavy copper PCBs are widely used in products where electrical load and heat generation are significant.
Common Applications Include:
Power distribution systems
Power converters
Planar transformers
Industrial control equipment
Motor drives
Automotive power electronics
Solar and renewable energy systems
Battery charging and energy storage equipment
Welding equipment
Heat dissipation modules
If your project needs stable current flow and efficient heat handling, heavy copper PCB is often the more suitable choice.
Heavy Copper PCB Design Considerations
Heavy copper board design is different from standard PCB design. Thicker copper affects current capacity, thermal behavior, trace geometry, and manufacturability. A good design should balance electrical performance with production feasibility.
1. Current Carrying Requirements
The minimum conductor width and copper thickness should be based on:
Required current
Acceptable temperature rise
Board layout space
Heat dissipation conditions
Wider traces and thicker copper improve current handling, but they also affect routing density and process difficulty.
2. Copper Profile and Manufacturing Impact
Heavy copper traces may not form a perfect rectangular shape after fabrication. The final conductor profile depends on plating and etching methods. This should be considered in spacing and tolerance planning.
3. Board Thickness
Heavy copper layers can increase total PCB thickness. This may affect:
Mechanical assembly
Connector matching
Drilling process
Stack-up design
Final product dimensions
4. Preferred Fabrication Method
For many heavy copper boards, additive plating processes are preferred over subtractive etching. Additive processing offers better copper build-up control, though it usually increases fabrication cost.
5. Tolerance
Typical tolerance for conductor width, spacing, and thickness is around ±20%, although tighter control may be achievable depending on the board structure and manufacturing process.
We support heavy copper PCB manufacturing for a wide range of power and thermal applications.
Item
Capability
Base Material
FR4 / Aluminum
Copper Thickness
4 oz to 10 oz
Extreme Heavy Copper
20 oz to 200 oz
Board Outline
Routing, Punching, V-Cut
Solder Mask Color
White, Black, Blue, Green, Red
Surface Finish
Immersion Gold, HASL, OSP
Max Panel Size
580 Ă 480 mm (22.8″ Ă 18.9″)
If your project has special stack-up, thermal, or current requirements, we can review the design and suggest a more manufacturable solution.
How We Support Heavy Copper PCB Projects?
For heavy copper PCB, engineering review is often as important as manufacturing itself. We work with customers on the practical points that affect both performance and yield.
Our support can include:
Copper thickness selection
Trace width and spacing review
Stack-up recommendation
Thermal structure assessment
Panelization suggestion
DFM optimization before production
Process evaluation for extreme heavy copper requirements
Heavy Copper PCB FAQ
1. What copper thickness is considered heavy copper PCB?
In general, heavy copper PCB refers to boards with copper thickness from 3 oz to 10 oz on inner or outer layers. Boards above this range, such as 20 oz to 200 oz, are often called extreme heavy copper PCB.
2. What is the main advantage of heavy copper PCB?
The main advantage is the ability to handle higher current and better heat dissipation compared with standard copper PCBs.
3. Can heavy copper PCB use aluminum base material?
Yes. Heavy copper PCB can be built on FR4 or aluminum base material, depending on the thermal and structural needs of the application.
4. Is heavy copper PCB more difficult to manufacture?
Yes. Thicker copper increases the complexity of plating, etching, drilling, and tolerance control. That is why DFM review is important before production.
5. What industries use heavy copper PCB most often?
Heavy copper PCB is commonly used in industrial control, automotive electronics, renewable energy, power conversion, and power distribution systems.
In power-dense electronics, standard PCB construction often becomes the limiting factor rather than the circuit design itself. Excessive temperature rise, copper fatigue, and current bottlenecks are common failure modes once current levels move beyond conventional ranges. This is where a reliable heavy copper PCB manufacturer stands out. Heavy copper PCBs are engineered specifically to handle high current, elevated thermal loads, and demanding mechanical stress while maintaining long-term reliability.
At Best Technology, we specialize in manufacturing premium heavy copper PCBs that meet and exceed IPC-A-610 requirements, tailored to the unique needs of high-power electronics. In this blog, weâll break down everything you need to know about heavy copper PCBsâfrom what defines them to how to choose the right manufacturer, plus real-world case studies and answers to your most pressing questions.
What Makes a PCB âHeavy Copperâ?
A PCB is typically classified as heavy copper when the finished copper thickness on one or more layers exceeds 3 oz/ftÂČ (â105 ”m). Many industrial designs extend well beyond this threshold, reaching 6 oz, 10 oz, or even 20 oz copper, depending on current and thermal requirements.
Unlike standard boards, heavy copper PCBs are not simply âthicker copper versionsâ of conventional designs. They require dedicated imaging, etching, plating, and lamination strategies to maintain conductor geometry, dielectric integrity, and layer-to-layer registration.
Why Heavy Copper Matters in High-Power Electronics?
As power electronics continue to shrink in size, current density inevitably increases. Heavy copper construction directly addresses this challenge by offering:
Higher current-carrying capacity without excessive temperature rise
Lower conductor resistance, improving energy efficiency
Improved thermal spreading, reducing hot spots
Enhanced mechanical strength, especially around plated through holes and power vias
In applications such as EV power modules, industrial motor drives, and renewable energy converters, heavy copper is often the difference between theoretical performance and field reliability.
Copper thickness is usually specified in ounces per square foot, but its real impact is seen in electrical and thermal performance.
Typical heavy copper parameters include:
Copper thickness: 3 oz to 20+ oz (105 ”m to >700 ”m)
Trace current capacity: Several times higher than 1-oz copper at equivalent temperature rise
Lower voltage drop: Especially critical for low-voltage, high-current systems
Thermal conductivity: Copperâs intrinsic conductivity enables efficient heat spreading across planes and embedded power structures
A qualified heavy copper PCB manufacturer will validate these parameters against IPC guidelines rather than relying on theoretical calculations alone.
Heavy Copper PCB Manufacturing Challenges
Manufacturing heavy copper PCBs is more complex than standard ones, requiring specialized equipment and strict quality control. Key challenges we address at Best Technology:
Etching Uniformity: Thicker copper is hard to etch evenly, causing uneven traces or undercutting. We use controlled depth etching and precision equipment for consistent, clean traces.
Plating Consistency: Multilayer PCBs need thick, uniform via plating. Our optimized electroplating ensures reliable via connections, avoiding high resistance or thermal failure.
Thermal Stress: Copper and substrates (e.g., FR-4) expand differently under heat, causing warping or delamination. We use temperature-controlled lamination to minimize stress.
IPC-A-610 Compliance: Meeting this standard (trace geometry, plating, solder joints) requires rigorous quality control at every manufacturing stage.
Design Guidelines for Heavy Copper PCB
Heavy copper PCB design should follow one core principle: current-driven, precisely matched copper. Simply increasing copper thickness often raises cost and introduces new risks, including uneven heat dissipation, soldering difficulty, and mechanical stress. Effective heavy copper design balances electrical demand with manufacturability.
1. Copper Thickness Selection
Choose copper thickness based on actual current, not excessive margin.
3 oz copper Ă 3 mm trace â 7.2 A, suitable for most industrial power designs.
Recommendations:
Prefer 3â6 oz, which covers most applications
Above 10 oz increases risks of warpage and drilling difficulty
Avoid overdesign unless required by aerospace or defense systems
2. Trace Design for High Current
Trace geometry must support smooth current flow.
3 oz copper: minimum trace width â„ 0.3 mm
6 oz copper at 10 A: recommended width â„ 5 mm
Avoid sudden width changes. Use gradual tapers (length â„ 3Ă width difference) to prevent current crowding and localized heating.
For thermal control, use copper pours under power devices combined with thermal vias (Ă 0.8â1.2 mm, pitch 2â3 mm) to transfer heat into internal planes.
3. Via Design Considerations
Vias are a critical limitation point in heavy copper PCBs.
Minimum finished hole â„ 0.8 mm (3 oz copper)
Via wall copper ℠20 ”m
Do not rely on a single via for high current. A 5 A path on 3 oz copper typically requires 2â3 parallel vias, as one via carries only 2â3 A reliably.
Choosing the right heavy copper PCB manufacturer is a strategic decision that directly affects product quality and lifecycle cost.
Important evaluation criteria include:
Proven experience with multi-ounce copper designs
Clear alignment with IPC-A-610 and IPC-6012 standards
Robust process control and inspection capability
Engineering support for DFM and design optimization
Ability to scale from prototype to volume production
Manufacturers that lack dedicated heavy copper expertise often struggle with yield, consistency, and long-term reliability.
Why Choose Best Technology as Your Heavy Copper PCB Manufacturer?
With over 20 years of experience in heavy copper PCB manufacturing, Best Technology has the expertise to handle even the most complex projectsâfrom standard heavy copper (3 oz â 5 oz) to extra-thick copper (up to 20 oz). Our team of engineers specializes in solving the unique challenges of heavy copper PCB design and manufacturing.
We offer fully customized heavy copper PCBs to meet your projectâs unique requirements. Whether you need a specific copper weight, substrate, surface finish, or board size, we can tailor our solutions to fit your needs.
We deeply know the importance of quality for every product, so we ensure the full traceability from design, manufacturing to shipment. We strictly adhere to IPC-A-610 standards (Class 2 and Class 3) for every heavy copper PCB we manufacture. In addition to this, due to heavy copper PCB always used in electric vehicles, our facility obtained the IATF16949 and AS9100D certifications to ensure each process are under rigorous control.
Heavy Copper PCB Case Studies in Best Technology
Case Study 1: EV Battery Management System (BMS) PCB
Customer: A leading global automotive manufacturer specializing in electric vehicles.
Challenge: The customer needed a heavy copper PCB for their EV BMS that could handle high currents (up to 200A), dissipate heat efficiently, and meet IPC-A-610 Class 3 standards. The PCB also needed to be compact to fit within the EVâs battery pack.
Solution: We designed and manufactured a 6 oz heavy copper PCB using high-temperature FR-4 substrate and ENIG surface finish. We integrated copper pours and thermal vias to improve thermal management, and optimized the trace width and spacing to handle the high current load. We also used blind vias to save space, ensuring the PCB fit within the customerâs compact design.
Result: The PCB met all IPC-A-610 Class 3 requirements, handled the 200A current load without overheating, and reduced the BMSâs overall size by 15%. The customer has since expanded their partnership with us for all their EV BMS PCB needs.
Case Study 2: Solar Inverter PCB
Customer: A renewable energy company specializing in solar inverters.
Challenge: The customer needed a heavy copper PCB for their 50kW solar inverter that could handle high voltages (up to 1000V) and dissipate heat in outdoor environments. The PCB also needed to be durable enough to withstand extreme temperature fluctuations (-40°C to 85°C).
Solution: We manufactured a 10 oz heavy copper PCB using polyimide substrate (for high-temperature resistance) and immersion silver surface finish (for excellent conductivity). We designed the PCB with wide traces (0.030 inches) to handle the high voltage and current, and integrated large copper pours to dissipate heat. We also used a conformal coating to protect the PCB from outdoor elements.
Result: The PCB operated reliably in extreme temperature conditions, handled the 1000V voltage load without failure, and reduced the inverterâs heat-related downtime by 80%. The customer reported a 20% increase in inverter efficiency due to the PCBâs superior thermal management.
Our Heavy Copper PCB Manufacturing Capabilities
At Best Technology, we have the capabilities to handle all your heavy copper PCB needsâfrom prototype to production. Hereâs a breakdown of our key manufacturing capabilities:
Base Material: FR4/Aluminum
Copper Weight: 3 oz â 20 oz (105 ÎŒm â 700 ÎŒm) for single-sided, double-sided, and multilayer PCBs.
Extreme Heavy Copper: 20-200OZ
Outline: Routing, punching, V-cut
Layer Count: 1 layer â 40 layers (multilayer heavy copper PCBs with blind/buried vias available).
Production Capacity: Prototype runs (1 â 100 units), small batch production (100 â 1000 units), and large-scale production (1000+ units) with lead times as short as 3 days for prototypes.
Support for prototypes, small batches, and stable mass production
FAQs About Heavy Copper PCBs
1. When should I choose a heavy copper PCB over a standard PCB?
Choose a heavy copper PCB if your project requires:
High current carrying capacity (more than 10A).
Enhanced thermal management (e.g., applications operating at high temperatures or generating significant heat).
Greater mechanical strength (e.g., rugged industrial or automotive applications).
Reduced component count (replacing discrete heat sinks or bus bars).
Standard PCBs are sufficient for low-power applications (e.g., consumer electronics with low current demands).
2.How is heavy copper PCB manufacturing different from standard PCB manufacturing?
Heavy copper PCB manufacturing requires specialized processes to handle the thicker copper layers, including:
Controlled depth etching to ensure uniform trace widths and clean edges.
Optimized electroplating processes to ensure consistent via plating thickness.
Temperature-controlled lamination to minimize thermal stress and prevent warping/delamination.
Rigorous quality control to meet IPC-A-610 standards, including X-ray inspection for via integrity.
Standard PCB manufacturing uses simpler etching and plating processes, as the thinner copper layers are easier to handle.
3. Are heavy copper PCBs more expensive?
Yes, heavy copper PCBs are typically more expensive than standard PCBs. The higher cost is due to:
More copper material (thicker layers require more copper).
Rigorous quality control (e.g., X-ray inspection, thermal testing).
However, the extra cost is often offset by the benefits: reduced component count, longer lifespan, improved reliability, and lower maintenance costs. For high-power applications, heavy copper PCBs are a cost-effective long-term investment.
4. How does copper thickness influence current carrying capacity?
Copper thickness has a direct impact on current carrying capacity: thicker copper layers have lower electrical resistance, allowing them to carry more current without overheating. As a general rule, the current carrying capacity of a copper trace increases linearly with copper thickness. For example:
1 oz copper trace (35 Όm): ~5A current carrying capacity (at 25°C temperature rise).
3 oz copper trace (105 Όm): ~15A current carrying capacity (at 25°C temperature rise).
10 oz copper trace (350 Όm): ~50A current carrying capacity (at 25°C temperature rise).
A reputable heavy copper PCB manufacturer will help you select the right copper thickness based on your projectâs current requirements and thermal constraints.
5. Can heavy copper PCBs be multilayered?
Yes, heavy copper PCBs can be multilayered. Multilayer heavy copper PCBs are used in high-power applications that require both high current carrying capacity and complex circuitry (e.g., EV BMS, solar inverters, aerospace systems). We specialize in manufacturing multilayer heavy copper PCBs with up to 40 layers, including blind and buried vias to save space and improve signal integrity.
6. How to avoid heat-related failures in heavy copper PCBs?
To avoid heat-related failures, follow these best practices:
Use thick copper layers (3 oz or more) to dissipate heat efficiently.
Integrate thermal management features like copper pours, thermal vias, and heat sinks.
Choose a high-temperature substrate (e.g., polyimide) for applications operating at extreme temperatures.
Optimize trace design (wider traces) to reduce resistance and heat generation.
Work with a heavy copper PCB manufacturer that adheres to IPC-A-610 standards, ensuring proper plating and trace integrity.
Ready to Start Your Heavy Copper PCB Project?
If youâre working on a high-power electronics project that requires premium heavy copper PCBsâones that meet IPC-A-610 standards, deliver superior performance, and fit your budgetâlook no further than Best Technology. As a trusted heavy copper PCB manufacturer with over 20 years of experience, we have the expertise, equipment, and dedication to bring your project to life.
Hereâs how to get started:
1. Share Your Requirements: Send us your PCB design files, copper weight needs, substrate preferences, and application details.
2. Get a Custom Quote: Our team will review your requirements and provide a competitive, no-obligation quote within 24 hours.
3. Design Support (If Needed): Our engineers will work with you to optimize your design for performance, manufacturability, and cost.
4. Manufacturing & Delivery: Weâll manufacture your heavy copper PCBs to IPC-A-610 standards, conduct rigorous quality control, and deliver them on timeâwhether you need prototypes or large-scale production.
Donât settle for subpar heavy copper PCBs that put your project at risk. Choose Best Technologyâthe premium heavy copper PCB manufacturer that delivers reliability, performance, and peace of mind. Contact us today to discuss your heavy copper PCB project!
What is heavy copper pcbs? That is, the copper foil thickness is greater than the conventional standard PCB. Generally speaking, when the copper foil thickness reaches 3 ounces per square foot (oz/ftÂČ) and above, it can be called a heavy copper PCB.
The manufacturing process of heavy copper PCBs is more complicated than that of ordinary PCBs, requiring higher technical levels and professional equipment. Compared with ordinary PCBs, its characteristics are high current carrying, good heat dissipation, high mechanical strength and strong reliability. It is suitable for high-power electronic equipment, harsh working environments and fields with high reliability requirements.
What is high copper thickness PCB?
High copper thickness PCB refers to a printed circuit board that uses thicker copper foil as the conductive material. In the standard PCB manufacturing process, the thickness of the copper foil is usually determined according to the application requirements, but when the thickness of the copper foil is greater than or equal to 3 ounces, this PCB is called a high copper thickness PCB.
Usually compatible with FR-4 dielectric, mainly used for inner layers rather than outer layers, plated through holes (PTH) usually need to be plugged/filled, and careful registration and lamination are required
Common heavy copper PCB thickness:
2 oz (70 microns)
3 oz (105 microns)
4 oz (140 microns)
6 oz (210 microns)
8 oz (280 microns)
10 oz (350 microns)
Application areas of heavy copper PCB:
Automotive electronics: widely used in key electronic devices such as automotive control modules, engine control systems, airbags, etc., because they can withstand high temperature, low temperature, corrosion and other environmental factors.
Power circuit: widely used in power modules, DC-DC converters and high power distribution boards, etc., capable of handling high current and high power requirements.
Industrial control system: used in high power motor drives, automation equipment and large mechanical control to meet the needs of high conductivity and mechanical strength.
Renewable energy systems: used in solar and wind energy systems to ensure stable system operation and reduce failure rates.
What are the advantages of heavy copper PCBs?
High conductivity: High copper PCB uses heavy copper foil as the conductive layer. Compared with ordinary PCB, its conductivity is significantly improved, which can carry larger current, reduce resistance loss and improve circuit efficiency.
High mechanical strength: Due to the increase in the thickness of copper foil, the mechanical strength of high copper PCB is also improved accordingly, which can withstand greater mechanical stress and impact, and is not easy to deform or damage.
Good heat dissipation performance: High copper PCB can quickly transfer heat from the circuit to the surrounding environment, effectively prevent components from overheating and damage, and improve the reliability and service life of the equipment.
What type of copper is PCB?
There are mainly the following types of copper on PCB: red copper, copper clad plate and inner layer copper.
Red copper: Red copper is the earliest material used in circuit boards, and is widely used due to its good processing performance and conductivity. The main component of red copper is copper, and the other components are less, but the disadvantage is that it is easily oxidized and corroded.
Copper clad laminate: Copper clad laminate is a layer of copper foil on an inorganic substrate, usually used for double-sided and multi-layer circuit boards. The copper foil ensures the conductivity and connectivity of the circuit board, while the inorganic substrate provides mechanical strength and heat resistance.
Inner copper: Inner copper is used in multi-layer circuit boards, which are made of multiple layers of inorganic substrate and copper foil. It is usually used in high-density or high-speed design circuit boards, with better signal transmission performance and higher mechanical strength, but the manufacturing cost is higher.
In addition, there are different types of copper foil in PCB, including electrodeposited copper and rolled copper. Electrodeposited copper has a vertical grain structure and a rougher surface, which is suitable for rigid PCB boards; while rolled copper has a horizontal grain structure and a smoother surface, which is suitable for flexible and high-speed circuit boards.
How thick is 2 oz copper on PCB?
The thickness of 2 oz copper is about 70 microns. In PCB design, copper thickness is usually expressed in ounces (oz), and the thickness of 1 ounce of copper is about 35 microns, so the thickness of 2 ounces of copper is about 70 microns.
The copper thickness standard of PCB board is usually expressed in oz/ftÂČ (ounces/square foot) or um (micrometer). The copper thickness of PCB board has an important impact on the performance and stability of the circuit board. The outer copper thickness mainly affects the stability of signal transmission and the ability to resist electromagnetic interference, while the inner copper thickness affects the signal transmission rate and signal-to-noise ratio.
Generally speaking, the thicker the outer copper thickness, the stronger the stability and signal strength of the circuit board, which is suitable for high-frequency and high-speed occasions; while the thinner the inner copper thickness, the more suitable for high-speed transmission signals, and the thicker the inner copper thickness, the more suitable for low-speed transmission signals and high signal-to-noise ratio signals.
Why use heavy copper PCB?
The main reasons for using heavy copper PCB include the following aspects:
Enhanced current carrying capacity: Heavy copper PCB uses a thicker copper layer, which can carry a larger current and reduce resistance and voltage drop. This is especially important for high-power applications or circuits that require high current transmission.
Optimize heat dissipation performance: Copper has good thermal conductivity, and a thicker copper layer can more effectively conduct heat away from hot spots and improve heat dissipation efficiency.
Improve signal transmission efficiency: Thicker copper layers can reduce losses and reflections during signal transmission and improve signal integrity.
Enhance mechanical strength: Thicker copper layers can increase the overall structural strength of PCBs, making them more resistant to physical shock and deformation.
Adapt to complex process requirements: Heavy copper PCBs can meet complex circuit design requirements through special process treatments, such as etching, drilling, gold plating, etc., to ensure the accuracy and reliability of circuit boards during manufacturing.
What is the most common copper thickness for PCB?
The most common PCB copper foil thickness is 35 microns. This thickness of copper foil is suitable for most consumer electronics products, can meet daily current and heat requirements, and has a relatively low cost and is suitable for large-scale production.
How are heavy copper PCBs made?
In the initial stage of making heavy copper PCBs, relatively heavy copper foil materials are selected. These copper foils are usually produced by electrolytic copper. During the electrolysis process, copper foils of different thicknesses can be produced by controlling the conditions of electrolysis, such as current density, electrolyte composition, and electrolysis time.
For situations where thicker copper foil is required, multiple lamination methods are used. Multiple layers of copper foil and insulating substrate materials are laminated according to design requirements, and then the copper foil and substrate are tightly combined through a high-temperature, high-pressure lamination process.
Next, the circuit pattern is manufactured on the outer layer of the heavy copper PCB, usually using a photolithography process. After that, according to the design requirements, holes are drilled on the heavy copper PCB to provide conditions for installing components and connecting circuits.
After the drilling is completed, a metal layer is covered on the hole wall using electroplating technology to achieve a connection between the layers, and a layer of copper foil is electroplated on the hole wall to increase the thickness of the conductor and the surface pad. Next, the dry film and excess copper foil are removed, and chemical etchants are generally used to make the circuit pattern clearer.
Subsequently, the heavy copper PCB is subjected to surface treatment, such as gold plating, tin spraying, etc., to improve welding performance and corrosion resistance. Finally, the finished heavy copper PCB is strictly inspected and tested to ensure that its electrical and mechanical properties are consistent with the design requirements.
Professional Heavy copper PCB manufacturers – BEST Technology
The minimum width and thickness of the heavy copper PCB conductor are mainly determined based on the required current carrying capacity and the maximum temperature rise allowed for the conductor. From the perspective of its size specifications and actual manufacturing process, the routing of the circuit board may not be a regular rectangular shape.
It is worth noting that the thicker copper conductor will significantly increase the overall thickness of the circuit board to a large extent. In terms of manufacturing process, the additive method (electroplating) process has certain advantages over the subtractive method (etching) process, but at the same time, its cost is relatively higher.
BEST Technology process capabilities:
Substrate: FR4/Aluminum
Copper thickness: 4OZ~10OZ
Extremely heavy copper thickness: 20~200 OZ
Contour: Milling, Punching, V-Cut
Solder mask: White oil/Black oil/Blue oil/Green oil/Red oil
Surface treatment: Immersion gold, tin spraying, OSP
Maximum panel size: 580*480mm(22.8″*18.9″)
Heavy copper PCB occupies an important position in the electronics field with its unique characteristics. With high current carrying capacity, good heat dissipation performance, higher mechanical strength and excellent reliability, it has become an ideal choice for many high-demand application scenarios. From power electronics to automotive electronics, from aerospace to medical equipment and communications, heavy copper PCB plays a key role.
