>On Tue, 26 Aug 1997  Tim Crist <tjcrist@CCGATE.HAC.COM> wrote:
>     Can anyone tell me what is the minimum thickness for a 1/2 ounce
>     copper trace on FR4 would be to carry 1 amp continuous?  FWIW,
>     the trace would be about 1/2" long.  I would also be interested in
>     the source of such information.
>

   Try the Printed Circuits Handbook by Coombs, published by McGraw Hill.

   A 100 mills should be adequate.  A more complete answer would depend
on what temperature rise and voltage drop is acceptable in your
application.

Lunchtime,
   Marv