Top 10 heavy copper pcb manufacturers in the world

What are Heavy Copper PCBs?

Heavy copper PCBs are printed circuit boards that feature copper traces thicker than the standard 1 oz (35 µm) copper weight. These PCBs can have copper weights ranging from 2 oz (70 µm) to 20 oz (700 µm) or more, depending on the application requirements. The thicker copper traces allow for higher current carrying capacity, improved thermal management, and better power dissipation.

Applications of Heavy Copper PCBs

Heavy copper PCBs find applications in various industries where high power handling is crucial:

  • Automotive: Electric vehicles, hybrid vehicles, and high-power automotive electronics
  • Aerospace: Satellite systems, avionics, and radar systems
  • Defense: Military communications, weapon systems, and ruggedized electronics
  • Renewable Energy: Solar inverters, wind turbine controllers, and power converters
  • Industrial: High-power motor drives, welding equipment, and power supplies

Top 10 Heavy Copper PCB Manufacturers

1. TTM Technologies, Inc. (USA)

TTM Technologies is a leading global PCB manufacturer with expertise in heavy copper PCBs. They offer a wide range of copper weights, from 2 oz to 20 oz, and can handle complex designs with tight tolerances.

Capability Description
Copper Weight 2 oz to 20 oz
Layer Count Up to 30 layers
Material FR-4, High-Tg FR-4, Polyimide, Rogers
Finish ENIG, ENEPIG, IAg, OSP, HASL

2. Unimicron Technology Corp. (Taiwan)

Unimicron is a global PCB manufacturer with a strong presence in the heavy copper PCB market. They offer a variety of copper weights and can handle high-layer-count designs with advanced features.

Capability Description
Copper Weight 2 oz to 16 oz
Layer Count Up to 28 layers
Material FR-4, High-Tg FR-4, Polyimide, Rogers
Finish ENIG, ENEPIG, IAg, OSP, HASL

3. Zhen Ding Technology Holding Limited (Taiwan)

Zhen Ding Technology is a leading PCB manufacturer specializing in advanced PCB technologies, including heavy copper PCBs. They offer a wide range of copper weights and can handle complex designs with high layer counts.

Capability Description
Copper Weight 2 oz to 20 oz
Layer Count Up to 28 layers
Material FR-4, High-Tg FR-4, Polyimide, Rogers
Finish ENIG, ENEPIG, IAg, OSP, HASL

4. Shennan Circuits Co., Ltd. (China)

Shennan Circuits is a leading Chinese PCB manufacturer with expertise in heavy copper PCBs. They offer a wide range of copper weights and can handle high-layer-count designs with advanced features.

Capability Description
Copper Weight 2 oz to 20 oz
Layer Count Up to 24 layers
Material FR-4, High-Tg FR-4, Polyimide, Rogers
Finish ENIG, ENEPIG, IAg, OSP, HASL

5. NCAB Group (Sweden)

NCAB Group is a global PCB supplier with a network of manufacturing partners specializing in various PCB technologies, including heavy copper PCBs. They offer a wide range of copper weights and can handle complex designs with tight tolerances.

Capability Description
Copper Weight 2 oz to 20 oz
Layer Count Up to 30 layers
Material FR-4, High-Tg FR-4, Polyimide, Rogers
Finish ENIG, ENEPIG, IAg, OSP, HASL

6. Kinwong Electronic Co., Ltd. (China)

Kinwong Electronic is a leading Chinese PCB manufacturer with a strong focus on heavy copper PCBs. They offer a wide range of copper weights and can handle high-layer-count designs with advanced features.

Capability Description
Copper Weight 2 oz to 20 oz
Layer Count Up to 28 layers
Material FR-4, High-Tg FR-4, Polyimide, Rogers
Finish ENIG, ENEPIG, IAg, OSP, HASL

7. Wus Printed Circuit Co., Ltd. (Taiwan)

Wus Printed Circuit is a Taiwanese PCB manufacturer with expertise in heavy copper PCBs. They offer a wide range of copper weights and can handle complex designs with tight tolerances.

Capability Description
Copper Weight 2 oz to 16 oz
Layer Count Up to 24 layers
Material FR-4, High-Tg FR-4, Polyimide, Rogers
Finish ENIG, ENEPIG, IAg, OSP, HASL

8. KCE Electronics Public Company Limited (Thailand)

KCE Electronics is a leading Thai PCB manufacturer with a strong presence in the heavy copper PCB market. They offer a variety of copper weights and can handle high-layer-count designs with advanced features.

Capability Description
Copper Weight 2 oz to 20 oz
Layer Count Up to 28 layers
Material FR-4, High-Tg FR-4, Polyimide, Rogers
Finish ENIG, ENEPIG, IAg, OSP, HASL

9. Tripod Technology Corporation (Taiwan)

Tripod Technology is a Taiwanese PCB manufacturer with expertise in heavy copper PCBs. They offer a wide range of copper weights and can handle complex designs with tight tolerances.

Capability Description
Copper Weight 2 oz to 16 oz
Layer Count Up to 24 layers
Material FR-4, High-Tg FR-4, Polyimide, Rogers
Finish ENIG, ENEPIG, IAg, OSP, HASL

10. Sanmina Corporation (USA)

Sanmina Corporation is a global electronic manufacturing services (EMS) provider with expertise in heavy copper PCBs. They offer a wide range of copper weights and can handle complex designs with high layer counts.

Capability Description
Copper Weight 2 oz to 20 oz
Layer Count Up to 30 layers
Material FR-4, High-Tg FR-4, Polyimide, Rogers
Finish ENIG, ENEPIG, IAg, OSP, HASL

Frequently Asked Questions (FAQ)

1. What is the minimum copper weight for a heavy copper PCB?

The minimum copper weight for a heavy copper PCB is typically 2 oz (70 µm). However, some manufacturers may consider 3 oz (105 µm) or 4 oz (140 µm) as the starting point for heavy copper PCBs.

2. Can heavy copper PCBs be combined with other advanced PCB technologies?

Yes, heavy copper PCBs can be combined with other advanced PCB technologies, such as high-frequency materials (like Rogers), blind and buried vias, and advanced surface finishes (like ENEPIG).

3. What are the main challenges in manufacturing heavy copper PCBs?

The main challenges in manufacturing heavy copper PCBs include maintaining tight tolerances, ensuring proper adhesion between the copper and the substrate, and managing the increased thermal stress during the manufacturing process.

4. How do heavy copper PCBs improve thermal management?

Heavy copper PCBs improve thermal management by providing a larger cross-sectional area for heat dissipation. The thicker copper traces act as heat sinks, allowing for better heat spreading and reducing the risk of thermal-related failures.

5. Are heavy copper PCBs more expensive than standard PCBs?

Yes, heavy copper PCBs are generally more expensive than standard PCBs due to the increased material costs and the specialized manufacturing processes required to produce them. However, the improved performance and reliability of heavy copper PCBs often justify the higher cost in high-power applications.

In conclusion, heavy copper PCBs are essential components in various industries that require high power handling and improved thermal management. The top 10 heavy copper PCB manufacturers worldwide offer a wide range of capabilities and can handle complex designs with advanced features. When selecting a heavy copper PCB manufacturer, consider factors such as copper weight range, layer count, material options, and surface finishes to ensure the best fit for your specific application.