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June 1998

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Subject:
Radial Cracks on Cyanide Ester resin
From:
James A Larson <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Mon, 8 Jun 1998 15:42:01 +0100
Content-Type:
text/plain
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text/plain (23 lines) 
Has anybody experienced Radial Cracking as viewed from a
horizontal section or Fishscale cracking as viewed from a
vertical section using Cyanate Ester Resin.  This resin system
is used to fill a 2 oz. copper plane layer in a 8 and 10 layer board.

If so what parameters have you compensated for to help
minimize this situation?

We've modified  press parameters and drill parameters with
minimal success.

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