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
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Heavy Copper 94v 0 Circuit Board 4OZ PCB Manufacturing Service 2.5mm Thickness Images
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