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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