Conductor width on a
circuit board is not a linear relationship. If one were to
assume a very conservative rule of thumb like 30ma / .001 inch (
in 1oz.per sq. ft. copper ), the result would provide a very
robust design. The temperature rise of such a circuit would always
be less than 10 C and there would be sufficient heat capacity to
provide heat sinking for most components. Changing the
copper thickness to 2oz. per sq. ft. does not change the current
carrying capacity by the same factor. For 2 oz copper we
would use 55ma / .001 inch width for the same overall
result.
If you need help
with more specific information reqirements for conductor width or
using copper on a circuit board as heat sink please Contact Us.
