Engineered for high-current applications. Heavy copper PCBs from 3oz to 20oz for automotive, power electronics, solar inverters, and industrial equipment. Superior current-carrying capacity and thermal performance.
Our specialized heavy copper PCB manufacturing process delivers robust boards capable of handling extreme current loads with excellent thermal management and long-term reliability.
Standard heavy copper range for most power electronics. Perfect for motor drives, battery management systems, and welding equipment applications.
Ultra-thick copper for the most demanding high-current applications. EV charging stations, large solar inverters, and traction control systems.
Combination of heavy copper bus bars and fine-line signal traces on the same board. Optimizes cost while maximizing current-carrying capability.
Combine heavy copper traces with aluminum or copper metal core substrates for maximum thermal management in high-power LED and power module applications.
PCB-embedded copper bus bars for extreme current distribution. Replaces bulky external bus bars with integrated solutions that save space and weight.
IATF 16949 certified for automotive. IPC Class 3 for aerospace and defense. UL 94V-0 rated boards available for safety-critical applications.
Heavy copper foil (3oz–20oz) is bonded to the substrate using high-pressure lamination for superior adhesion.
Additional copper is electrodeposited to build up trace thickness. Multi-step plating process ensures uniform coverage.
Precision chemical etching forms circuit patterns. CNC routing and scoring for complex board shapes.
Electrical continuity test and thermal imaging verification to ensure current-carrying performance meets specifications.
Precision manufacturing capabilities to meet the most demanding power electronics requirements.
| Parameter | Specification |
|---|---|
| Copper Weight Range | 3 oz/ft² (105μm) to 20 oz/ft² (700μm) |
| Standard Copper Weight | 3oz, 4oz, 6oz, 10oz, 15oz, 20oz |
| Board Thickness | 0.8mm – 6.0mm (standard), custom available |
| Min Line Width / Spacing | 0.5mm / 0.5mm (at 6oz+) |
| Min Annular Ring | 0.3mm (mechanical drill) |
| Min Hole Size | 0.5mm (mechanical), 0.2mm (laser) |
| Board Layers | 1-8 layers (standard), multi-layer with heavy copper |
| Material | FR-4, High-TG FR-4, Rogers, Metal Core combinations |
| Surface Finish | HASL, ENIG, Immersion Tin, OSP |
| Solder Mask | Green, Black, White, Red, Blue, Yellow |
| Current Capacity | Up to 100A+ per trace (trace-width dependent) |
| Thermal Cycling | -40°C to +150°C (standard), extended ranges available |
| Standards | IPC Class 2 / Class 3, UL 94V-0, RoHS / REACH |
| Certifications | ISO 9001, IATF 16949 (automotive) |
Heavy copper PCBs are essential across industries where high current and reliable thermal management are non-negotiable.
EV chargers, BMS, motor drives, ADAS
PV string inverters, micro-inverters
SMPS, UPS, welding equipment
Traction control, auxiliary converters
VFDs, soft starters, servo drives
AC/DC chargers, charging stations
Tell us your current requirements and we'll provide optimized copper weight recommendations with competitive pricing.
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