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Flex & Rigid-Flex PCB

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Rigid flex circuits have been used in the military and aerospace industries for more than 20 years.Rigid flex circuits combine the best of both rigid boards and flexible circuits integrated together into one circuit. The two-in-one circuit is interconnected through plated thru holes. Rigid flex circuits provide higher component density and better quality control.

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measuring inprocess copper plating thickness
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Hi Folks,
I am looking for some info. and possibly a source on measuring inprocess copper plating thickness for Flex PCB manufacturing facilities.
I have tried XRF, E-Current method but the supplier told us that it wont work with Flex material - thickness is also an issue for this matter.
I am looking for non-destructive inexpensive testing method beside hole gauging.
Thanks in advance.
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David efiv

Very interesting post.

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