Heavy Copper PCB Trace Current Calculator

📊 Calculate Current

📏 Calc. Trace Width

⚡ Copper Thickness

Select copper weight (oz)

Manual override (mm) – if filled, takes priority

📐 Trace Width (mm)

For heavy copper, typical widths 2mm – 20mm+

🌡️ Temperature Rise (ΔT)

Higher ΔT allows higher current but reduces reliability

🖥️ PCB Layer

External Layer Internal Layer

External traces dissipate heat better → ~2x current capacity of internal

📖 Engineering reference – IPC-2221 generic standard for PCB trace current. This calculator is optimized for heavy copper (≥2oz). Results are theoretical DC current at given temperature rise. Always validate with thermal simulation for critical designs.

📧 If you have any questions about PCBs, please email us at sales@pcbsky.com, and we will answer them for free.

🔧 Heavy Copper PCB Current Calculator