Heavy copper PCBs

The heavy copper PCB segment is a growing part of our production. In order to support this important segment, we are developing long-standing relationships with several factories which are carefully selected in our sourcing process, to provide you with high current, efficient thermal management and long-term stability heavy copper PCB solution.

Microsection of a heavy copper PCB | NCAB Group

What is a heavy copper PCB?

It is a PCB made with two or more conductive foils which has a conductive copper layer thickness of 3oz or more. When space is limited and it’s not possible to carry high currents by widen the track, the use of heavy copper PCB can effectively increase the current-carrying capacity of the circuit while supporting great heat dissipation.

Typical Track and Gap capabilities by copper thickness

	Base Copper	Capability (mm)
Inner Layer Track / Gap	102.9µm (3OZ)	0.20/0.20
	137.2µm (4OZ)	0.25/0.25
	171.5µm (5OZ)	0.35/0.35
	205.7µm (6OZ)	0.40/0.40
Outer layer Track / Gap	102.9µm (3OZ)	0.25/0.30
	137.2µm (4OZ)	0.30/0.30
	171.5µm (5OZ)	0.40/0.40
	205.7µm (6OZ)	0.45/0.50

High current carrying

We support the production of heavy copper PCBs for high-power applications such as EV-chargers, high current systems, power storage systems, and base stations. Our typical capabilities include copper thicknesses over 3oz and track/gap designs such as 8/8 mils. For requirements beyond 6oz, please contact us to discuss feasibility and factory availability.

Efficient heat dissipation

The thermal conductivity efficiency of ultra-heavy copper foil is significantly enhanced, which reduce the operating temperature of components, extend equipment life and improve system stability.

High mechanical strength and reliability

Heavy copper greatly enhances the PCB’s ability to resist impact and deformation, and is suitable for long-term stable operation in industrial automation and harsh environments.

Download our PCB design guidelines to get your PCBs right from start

Design guidelines

Contact us

Please contact us if you need further information or assistance, we are happy to help you.