Victor:
     
     Flexible printed circuits have been around since the late 50's and 
     have improved greatly with the advent of new materials such as 
     adhesiveless polyimide film.  The FPC can be soldered using all of the 
     conventional methods available for rigid PCB's.  In some instance the 
     FPC should be palletized or rigidize for ease of assembly.  There are 
     various materials such as thin, bendable FR4, mylar, Nomex, teflon, 
     polyimide, etc.  As with rigid boards there are also different 
     processes to add the conductors such as additive, subtractive, metal 
     filled epoxy, etc.
     
     If you have further questions, I would be happy to help.  Call 
     603-337-1691.
     
     Regards,
     
     Ron Yanuszewski


______________________________ Reply Separator _________________________________
Subject: flexible circuit
Author:  [log in to unmask] at !INTERNET
Date:    12/17/96 11:22 PM


Hi, 
     
I have seen some SMT components laying on circuits on a sheet of plastic, 
which can be folded and saves some space.  I also heard that cellular phone 
or camera uses this kind of circuit board due to the limited space available.  
     
My question is : how do they solder the components onto it?  Normal 
reflow?  Would it go through the 200C without damage?  What is the 
material of it?
     
Thank you very much.
     
Best regards,
     
Victor
     
     
     
     
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