3mm Prototype FR4 Heavy Copper PCB Manufacturing Assembly

Thick Copper PCB Efficient Heat Conduction Heavy Copper PCB Manufacturing Assembly

♦ 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

• • ​​Excellent conductivity​​: Thick copper improves current flow, lowers resistance, supports high-power/high-frequency circuits, and boosts speed/reliability.

  • ​​Strong load capacity​​: Thicker foil increases rigidity, resists pressure/bending/thermal stress, and suits harsh environments.

  • ​​Efficient heat dissipation​​: Rapid heat spreading reduces thermal stress, ensures stable operation of high-power devices, and extends lifespan.

  • ​​High thermal stability​​: Minimizes heat buildup, maintaining performance at high temperatures.

  • ​​Design flexibility​​: Enables wider traces and tighter spacing for complex/high-density circuits.

♦ 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

​​♦ Key Points for Thick Copper PCB Design

• • Line width and spacing​​: Due to the serious side etching during etching, the line width and spacing need to be larger. For example, when the inner layer is 2oz copper thick, the etching compensation is generally 2mil to avoid the line being too thin or open.
  • ​​Controlled depth drilling processing​​: The controlled depth drilling machine is used for precise drilling to ensure the compact layout and high performance of electronic components. It is used in the manufacturing of mobile phones, routers and other equipment.

♦ 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