We have seen this done sucessfully, Though we have not validated the
process. The client installed components, both through hole and SMT on very
thin FR4 and then bent the PWA into a loop about 1-2 inches in diameter and
potted the assembly.

 Guy Ramsey
American Competitiveness Institute
Senior Lab Technician / Instructor
610 362-1200 ext 107


-----Original Message-----
From: TechNet [mailto:[log in to unmask]]On Behalf Of <Your Full Name>
Sent: Wednesday, November 01, 2000 12:23 AM
To: [log in to unmask]
Subject: [TN] Thin FR#4 substrate


Hi:
     Is there anyone using very thin(thickness) FR#4 substrate instead of
flex
cicruit ? It may be kind of FR#4 without fibre glass enforcement. Any
information are welcome.

regards,

Chan SL

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