Pcb Trace Current: internal
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) | notes | resistance mohm per inch (mohm/in) | temp rise C (C) | trace width mils (mil) | trace width mm (mm) |
|---|---|---|---|---|---|---|---|---|---|---|
| internal | int_0p5oz_10C_0p5A | 0.685 | 0.5 | 15.69 | 0.5 | IPC-2221 internal layer; I=0.024×dT^0.44×A^0.725 | 1.9 | 10 | 22.9 | 0.582 |
| internal | int_0p5oz_10C_1A | 0.685 | 0.5 | 45.76 | 1 | IPC-2221 internal layer; I=0.024×dT^0.44×A^0.725 | 0.65 | 10 | 66.8 | 1.697 |
| internal | int_0p5oz_10C_2A | 0.685 | 0.5 | 133.71 | 2 | IPC-2221 internal layer; I=0.024×dT^0.44×A^0.725 | 0.22 | 10 | 195.2 | 4.958 |
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