[SI-LIST] : conductor thickness versus current

Tim Parks (tparks@ferrotec.ie)
Mon, 16 Nov 1998 17:35:28 +0000

Dear list
I'm looking at a graph on page page 40 of Gerald L. Gonsbergs book "Printed
Circuit Design".

It shows three grahps relating track width/cross section to current
carrying capability.

My question is which graph relates to internal PCB tracks and which to
external? So which conductor can carries a higher current; A 20 sq. mils
internal track or a 20sq. mils external track.

thanks in adance for you help
Tim

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