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Date: | Wed, 1 Nov 2000 19:19:00 +0100 |
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I have been using a fr4 type material to make a substrate utilizing
Constantan and Copper for the metallic layers for over 10 years. The
thickness of the Fr4 is approx. 50 microns.
There are thinner materials out there , but the handling becomes an issue.
The only way to process a very thin substrate with out the glass
cloth in it is to modify the component make up of the polymer to make it
Flexible.
Russ Smith
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From: <[log in to unmask]>
To: [log in to unmask]
Subject: [TN] Thin FR#4 substrate
Date: Wednesday, November 01, 2000 12:23AM
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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