ENIG Thick Copper PCB Highly Efficient Thermal Conduction Inverter

♦ 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

​​♦ Copper Thickness Selection Basis

• • 1-2oz: conventional power modules, medium current circuits (<50A).

  • 3-4oz: high power LED drivers, inverters (50-100A).

  • 5oz and above: electric vehicle inverters, photovoltaic combiner boxes (>100A).

♦ 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..