Inner traces (1-10 A)
Formula
Given:
„ I [A] (Current)
„ T [°C] (Temperature rise)
„ m [oz] (Mass of PCB trace)
Constants:
„ y = 1.378 [mils/oz] for copper
„ b = 0.44
„ c = 0.725
„ k = 0.048 (for outer layers)
„ k = 0.024 (for inner layers)
Formulas:
„ A [milsē] = (PCB trace area)
„ l [mils] = (PCB trace width)
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Last modified: September 9, 2013