High Frequency Reliable Thick Copper PCB Black Board for Power Module

♦ What is Thick copper PCB?

Thick copper PCB refers to a circuit board formed by bonding a layer of copper foil with a thickness of 2 ounces (oz, about 62.5 microns) or more to FR-4 or other substrates during the printed circuit board (PCB) manufacturing process.

♦ Features of Thick Copper PCB

• • High current carrying capacity: Thick copper reduces resistance, carries 100A current, and improves power density.
  • Strong heat dissipation: Fast heat conduction, temperature rise can be controlled within 40°C.
  • High mechanical strength: Vibration and shock resistance, adaptable to harsh working conditions.
  • High frequency stability: Low signal attenuation, supports high-speed transmission.
  • High reliability: Wide temperature operation (-40°C~150°C), long-term stability.

♦ Applications of Thick Copper PCB

• • ​​Power supply equipment: high-power switching power supply, inverter, UPS, etc.
  • ​​Automotive electronics: electric vehicle motor controller, on-board charger, battery management system.
  • ​​Industrial control: motor driver, servo controller, welding equipment.
  • ​​New energy field: photovoltaic inverter, wind power converter.
  • High-power LED lighting: LED driver board that needs heat dissipation and current carrying.

♦ Special structure in thick copper PCB design

• • Copper-based sandwich design:A copper-based heat dissipation layer (such as copper bricks or copper foil stacking) is embedded in the traditional FR-4 substrate to form a "sandwich" structure, which increases the local heat dissipation capacity by 3 times and is used for direct installation of IGBT modules.

    
    

  • Step-type copper thickness design:Different copper thicknesses are used in different areas on the same PCB (such as 8oz in the power area and 1oz in the signal area) to balance the current carrying and signal integrity requirements. Copper layer partitioning needs to be achieved by laser cutting or milling.

♦ Technical Parameters

♦ One-Stop PCBs Solution

PCB Prototype	Felx PCB	Rigid-Flex PCB	Aluminium PCB
Heavy Copper PCB	HDI PCB	High Frequency PCB	High TG PCB

♦ Advantages of DQS Team

1. On-time Delivery:

• • Owned PCBA factories 15,000 ㎡
  • 13 fully automatic SMT lines
  • 4 DIP assembly lines

2. Quality Guaranteed:

• • IATF, ISO, IPC, UL standards
  • Online SPI, AOI, X-Ray Inspection
  • The qualified rate of products reach 99.9%

3. Premium Service:

• • 24H reply your inquiry；
  • Perfect after-sales service system；
  • From prototype to mass production

DQS Electronic is located in Shenzhen, focusing on PCB Layout Design, PCB Fabrication, Electronic Components Sourcing, SMT, PCB Assembly and Testing. We are a one-stop EMS electronic manufacturing company committed to providing global customers with rapid prototyping and mass production.

Our products include single, double, multi, high frequency, aluminum base, copper base, FR-4 and other high precision circuit boards.

We have over 10 years of experience in serving many domestic and foreign brand customers in a wide range of fields such as Medical, Automotive, Industrial Automation, Artificial Intelligence, Smart Home, Security, Power and Communications, etc..