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July 1997

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Subject:
FAB: Unsupported vs. Supported
From:
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Date:
Tue, 15 Jul 1997 14:23:40 -0500
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     Address,
     
     Are there any Technical Publications on comparing the reliability of 
     unsupported and supported vias/pths?  What other avenues should I be 
     concerned with should I have unsupported vias and pths (internal and 
     external) where conductors do not intersect?
     
     My reading up until now says supported vias and pths are more reliable 
     than there counterparts.  Does this still hold true?  All other vias 
     and pths will have A/Rs and teardrop pads with no tangent and/or 
     breakout at the egress.  
     
     Pass the info.  Please advise.  Later
     
     John Gulley

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