While I don't believe this is feasible, I thought I would post this to 
the forums on behalf of a member.


"We are looking at an application for a flexible printed circuit which 
required some of the traces to carry 40 to 50 amps continuous current for 
extended periods - say 5 to 6 hours.  Is this something any has any 
experience with.  The charts I work from give a maximum of 27 amps for a 
7mm wide trace on 6 oz copper and a 30 degree C temperature rise.

Is it even feasible to consider using a flex circuit in this case.  I 
would appreciate any input you may have on current carrying capacity of 
copper conductors on flex circuits."


Thanks for any feedback.
Regards
__________________________________________________

David W. Bergman, Technical Director
IPC
2215 Sanders Road
Northbrook, IL  60062-6135
847-509-9700 x340 Phone
847-509-9798 Fax
email  [log in to unmask]
www  http://www.ipc.org
faxback support 800-646-0089
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