Custom Heavy Copper PCB with Up to 6 oz Copper Weight for High-Current Carrying in 2 to 64 Layers

Heavy Copper PCB Fabrication Service

Huayihai fabricates custom heavy copper PCBs with copper weights up to 6 oz for high-current and high-power designs. Boards are built according to customer Gerber files, where thick copper traces carry high currents, improve thermal distribution, and increase mechanical robustness.

Heavy copper designs can be manufactured on multilayer PCB stack-ups according to customer requirements. Huayihai manufactures heavy copper PCBs from 2 layers up to 64 layers under IPC-A-600 workmanship standards.

Custom Manufacturing Only

We fabricate heavy copper PCBs according to customer Gerber files and technical specifications. We do not supply ready-made or standard stock boards.

Product Specifications

Key Features

• Copper weights up to 6 oz for high-current carrying

• Available on 2 to 64 layer stack-ups

• Improved thermal distribution and mechanical strength

• Combination of power and signal layers on one board

• ENIG and other finishes compatible with heavy copper construction

• Manufactured under IPC-A-600 workmanship standards

Manufacturing Highlights

Heavy copper fabrication requires controlled plating and etching so that thick traces keep defined edges and reliable insulation spacing. Huayihai runs heavy copper builds through the same impedance, drilling, and testing discipline as its standard multilayer production.

Key fabrication elements include:

• Stack-up and current-carrying review of Gerber files

• Thick copper plating with controlled trace geometry

• Heavy copper and standard signal layers combined in one stack-up

• Via and through-hole plating matched to current requirements

• 100% electrical testing before shipment

Typical Applications

Heavy copper PCBs suit designs where currents, heat, and reliability dominate:

• Power Supplies and Power Conversion

• Automotive Power Electronics

• Motor Drives and Inverters

• Welding and Industrial Power Equipment

• Renewable Energy Systems

• Other High-Current Applications

Why Choose Huayihai

• Over 20 years of PCB manufacturing experience

• Copper weights up to 6 oz, confirmed by process capability

• Power and signal layers combined in multilayer stack-ups

• Quality management based on ISO 9001, ISO 13485, IATF 16949 and UL

• IPC-A-600 workmanship standards

• Prototype, low-volume, and mass production support

Manufacturing Process

• Gerber file and stack-up review (2–5 working days engineering review)

• Heavy copper plating and trace formation

• Lamination and drilling

• Outer layer imaging

• Solder mask and surface finish

• Electrical testing and final inspection

FAQ

Q1: What is the maximum copper weight?

Up to 6 oz, on 2 to 64 layer stack-ups.

Q2: Why use heavy copper PCBs?

Thick copper carries higher currents, spreads heat, and improves mechanical durability in power designs.

Q3: Can heavy copper be combined with controlled impedance?

Yes, impedance control with ±5% tolerance is available alongside heavy copper layers.

Q4: What surface finishes work with heavy copper?

HASL, lead-free HASL, ENIG, Im Sn, and OSP.

Q5: What is the standard lead time?

3–5 working days for PCB prototypes and batches, after file review is complete.

Request a Quote

Need custom heavy copper PCBs up to 6 oz for high-current designs?

Send us your Gerber files and specifications for a quotation. Learn more at nexuspcba.com.