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February 1999

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Subject:
From:
Eric Christison <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Wed, 17 Feb 1999 06:49:58 -0600
Content-Type:
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We're currently working on a design which entails a leap into the unknown for
us. I'd like to know if anyone's been here before and what they found.

I've got a very small Flex which needs folded up in order to fit it into a
tube, Once the flex is inside the tube everything is potted and so the flex
never moves again. In order to get it into the smallest diameter tube we need
to put a sharp, permanent bend into the flex. Has anyone done this before and
did it cause cracking in the tracks - the bend will always be perpendicular to
the tracks.

The spec fo the flex is:

double sided
1/2 oz copper
0.002" pyrolux (polyimide) substrate
0.25mm inner bend radius.
Epoxy coverlay top and bottom.




Eric Christison

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