Advanced PCB
Heavy Copper PCB
3oz to 12oz copper for high current power conversion, drives and charging equipment.
Overview
Heavy copper boards carry high current with less temperature rise, which is why power supplies, motor drives and charging infrastructure use them. Thick copper makes etching and lamination harder: sidewall undercut, resin starvation and drill smear all need process compensation. Aisler produces 3oz to 12oz outer copper with matched etch and press parameters, and can combine heavy copper outer layers with standard inner signal layers.
Key construction features
- Outer copper from 3oz up to 12oz, inner copper up to 6oz
- Mixed copper construction on the same board
- Copper busbar and embedded copper coin options
- Wider etch compensation to hold trace width at the base
Manufacturing specifications
Standard production capability for heavy copper pcb. Tighter limits are confirmed during DFM review.
| Layer count | 2 - 16 layers |
|---|---|
| Copper weight | 3 oz - 12 oz outer |
| Board thickness | 1.0 - 6.0 mm |
| Min trace / space | 12 / 12 mil at 3oz, scaled with copper |
| Surface finish | HASL, ENIG, OSP |
| Lead time | 7 - 18 working days |
Typical applications
- Industrial power supplies and converters
- Motor drives and inverter modules
- EV charging piles and battery management
- Solar inverters and energy storage systems
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Ready to start your project?
Send your Gerber files for a quote. Simple boards are quoted within 1 hour, complex builds within 24 hours.