You need to specify what holes to be plugged so they do not plug your 
     holes that you used for electrical test.  You can do this by a hole 
     size or a via pad size.


______________________________ Reply Separator _________________________________
Subject: PLUGGED VIAS
Author:  [log in to unmask] at corp
Date:    10/14/96 10:24 AM


I have run into a problem with a board that has vias in smt pads.  We 
need all of the vias plugged, and I am told that solder mask is the best 
way to do that.  This is to ensure that a good vacuum is maintained for 
our ATE equipment.  That is the problem.  I can not have a via covered 
with solder mask on top of an smt pad.  The board house I am using says 
this is difficult for them because they have to determine which vias are 
plugged and which are not.  Anyone out there with any suggestions?
     
Thanks,
     
    Barry Darnell
(864)627-8800 Ext. 231
[log in to unmask]
CD Electronics, Inc.
Printed Circuit Board Designer
     
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