Current on a PCB
Andrew Seddon email (remove spam text)
> Hard to imagine anyone would do this. Even though the nomograph
> indicates you can run 750 mA thru such a trace, and only have a 10degC
> temp rise, there are several "other" things to worry about. Trace series
> R producing IR drops. Digital noise in this narrow channel. Inductive
> effects of narrow trace width at hi speeds. Impedance issues. On and on.
I always thought that it was best to use the least ammount of copper you can
with digital logic, come to think of it I think I made this rule up myself
so any input appreciated. BTW I just got a board back from the shop, it has
8 mil ground and power traces. Seems to be working OK. I dind`t mean to do
it but it was a rush job and I fogot to manually route the power traces.
See also: www.piclist.com/techref/pcbs.htm?key=pcb
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