4OZ Heavy Copper PCB with 2.5mm PCB Board Thickness
♦ What is Heavy Copper PCB?
A Heavy Copper PCB is a specialized printed circuit board that
uses exceptionally thick copper layers (typically ≥ 3
oz/ft², up to 20 oz/ft² or more) for high-current,
high-power, or high-thermal applications. Unlike standard PCBs
(which use 1-2 oz copper), heavy copper PCBs can handle extreme electrical loads, heat
dissipation, and mechanical stress.
♦ Features of Heavy Copper PCB
✅ High Current Capacity – Supports 10A–100A+ per trace (vs.
~1–5A in standard PCBs).
✅ Enhanced Heat Dissipation – Reduces hotspots by spreading
heat through thick copper planes.
✅ Strong Mechanical Structure – Resists thermal expansion,
vibration, and warping.
✅ Space Efficiency – Fewer layers needed compared to parallel
traces in standard PCBs.
✅ High Reliability – Ideal for harsh environments (industrial,
automotive, aerospace).
♦ Heavy Copper PCB vs. Standard PCB
| Parameter | Heavy Copper PCB | Standard PCB |
|---|
| Copper Thickness | 3 oz – 20+ oz/ft² | 0.5–2 oz/ft² |
| Current Handling | 10A–100A+ | <5A |
| Thermal Performance | Excellent | Moderate |
| Cost | Higher (complex manufacturing) | Lower |
| Typical Applications | Power electronics, motor drives | Consumer electronics, low-power devices |
Heavy Copper PCBs are essential for high-power, high-reliability
applications where standard PCBs would fail. They excel in
thermal management, current handling, and durability, making
them ideal for industries like automotive, aerospace, and
industrial automation.
Need a Heavy Copper PCB quote? Let me know your specs (current
rating, layers, material), and I can recommend the best
manufacturers!
♦ Technical Parameters
