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June 1997

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Subject:
Tented Vias
From:
[log in to unmask] (Frank Hinojos)
Date:
Tue, 24 Jun 1997 14:53:34 -0700
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     A couple of weeks ago I asked all of you about the dangers of using 
     tented LPI vias.  I received an overwhelming response that while it is 
     good for assembly, it may be very detrimental to the boards' 
     reliability due to chemical interaction of contaminants and uncured 
     LPI in the via.  Why then does it seem that everyone is using tented 
     vias and why haven't we heard of problems arising due to your 
     concerns?
     
     Frank Hinojos
     Watkins-Johnson Co.  

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