PCB trace width
Current → minimum trace width per IPC-2221
Parameters
Trace width
0.78 мм (31 mil)
IPC-2221: outer layers carry ~2× inner. ΔT 10 °C is conservative, 20–30 °C acceptable for power. For >3A prefer a polygon/bus over a thin trace.
Current → minimum trace width per IPC-2221
IPC-2221: outer layers carry ~2× inner. ΔT 10 °C is conservative, 20–30 °C acceptable for power. For >3A prefer a polygon/bus over a thin trace.