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Author Topic: Rigid Flex Boards - Solder Mask or Coverlay or Both  (Read 2526 times)

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breeze-eastern-sw

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Rigid Flex Boards - Solder Mask or Coverlay or Both
« 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.