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General Category => General Discussion => Topic started by: breeze-eastern-sw on September 30, 2010, 21:27:18 PM

Title: Rigid Flex Boards - Solder Mask or Coverlay or Both
Post by: breeze-eastern-sw on September 30, 2010, 21:27:18 PM

Our PCB mfg. for rigid flex board (contains rigid and flex parts), claim they never used solder mask, only coverlay. Board is mfg. per MIL-P-50884, Type 4, Class A.

Question is, is coverlay an accepatable substitute for solder mask? I've read that solder mask can crack and flake.

Thanks.