Pcb Trace Current: external
ext 0p5oz 20C 5A to ext 1oz 10C 2A
PCB trace width vs. current carrying capacity per IPC-2221 Section 6.2 formula (external: I=0.048×ΔT^0.44×A^0.725; internal: I=0.024×ΔT^0.44×A^0.725). Covers external and internal PCB layers, copper weights 0.5–3 oz/ft², temperature rises 10–45°C, currents 0.5–10 A. Includes trace width in mils and mm, copper cross-section area, and trace resistance per inch.
| layer type | record id | copper thickness mils (mil) | copper weight oz (oz/ft2) | cross section mils2 (mil2) | current A (A) | resistance mohm per inch (mohm/in) | standard | temp rise C (C) | trace width mils (mil) | trace width mm (mm) |
|---|---|---|---|---|---|---|---|---|---|---|
| external | ext 0p5oz 20C 5A | 0.685 | 0.5 | 75.9 | 5 | 0.39 | IPC-2221 Section 6.2; IPC-2152; Saturn PCB Calculator | 20 | 110.8 | 2.814 |
| external | ext 0p5oz 30C 1A | 0.685 | 0.5 | 5.07 | 1 | 5.9 | IPC-2221 Section 6.2; IPC-2152; Saturn PCB Calculator | 30 | 7.4 | 0.188 |
| external | ext 0p5oz 30C 2A | 0.685 | 0.5 | 14.8 | 2 | 2.02 | IPC-2221 Section 6.2; IPC-2152; Saturn PCB Calculator | 30 | 21.6 | 0.549 |
| external | ext 0p5oz 30C 3A | 0.685 | 0.5 | 27.32 | 3 | 1.09 | IPC-2221 Section 6.2; IPC-2152; Saturn PCB Calculator | 30 | 39.9 | 1.013 |
| external | ext 0p5oz 45C 1A | 0.685 | 0.5 | 3.7 | 1 | 8.1 | IPC-2221 Section 6.2; IPC-2152; Saturn PCB Calculator | 45 | 5.4 | 0.137 |
| external | ext 0p5oz 45C 3A | 0.685 | 0.5 | 19.8 | 3 | 1.51 | IPC-2221 Section 6.2; IPC-2152; Saturn PCB Calculator | 45 | 28.9 | 0.734 |
| external | ext 1oz 10C 0p5A | 1.37 | 1 | 3.56 | 0.5 | 8.36 | IPC-2221 Section 6.2; IPC-2152; Saturn PCB Calculator | 10 | 2.6 | 0.066 |
| external | ext 1oz 10C 10A | 1.37 | 1 | 312.63 | 10 | 0.096 | IPC-2221 Section 6.2; IPC-2152; Saturn PCB Calculator | 10 | 228.2 | 5.796 |
| external | ext 1oz 10C 1A | 1.37 | 1 | 10.28 | 1 | 2.9 | IPC-2221 Section 6.2; IPC-2152; Saturn PCB Calculator | 10 | 7.5 | 0.191 |
| external | ext 1oz 10C 2A | 1.37 | 1 | 30 | 2 | 1 | IPC-2221 Section 6.2; IPC-2152; Saturn PCB Calculator | 10 | 21.9 | 0.556 |
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