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1996

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Tue, 27 Aug 1996 09:02:45 -0400
From [log in to unmask] Tue Aug 27 14:
14:05 1996
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In a message dated 96-08-26 09:53:47 EDT, you write:

<< 1. Has anyone had electrical problems with glue in the leads of 
    fine pitch devices? 

We have occasionally worked with customers who have had problems with "chip
bonder" types of adhesives.  In a number of cases, we found the adhesives to
either contain a high level of chloride or had an outgassing product (from
the cure reaction) which were high in chloride.  High levels of chloride will
contribute to electrical leakage, as well as metal migration and corrosion. 

 2. Can the glue be conductive for at least fine pitch devices? 

I think it is not so much a case of a conductive (by design) material, but
that the material contains enough halides to be harmful.

Hope this helped.

Doug Pauls
CSL
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