Hi Mark,

We have been building this type of blind via board for about 12 years and it
accounts for a substantial part of our board volume. All of the major OEMs
use this technology and if you would like to know more, visit our web page
at www.microvia.com or call me direct at 407-699-5000.


Thanks,


Sid Tryzbiak
Microvia, Inc.

-----Original Message-----
From: [log in to unmask] <[log in to unmask]>
To: [log in to unmask] <[log in to unmask]>
Date: Tuesday, June 16, 1998 4:36 PM
Subject: [TN] Overplated blind via's


Hello Technet,

Our company is busy designing some printed circuit boards with
"overplated blind via's" (I mean blind via's, made in a sequential
plating process, where the via is filled with epoxy, after which it is
covered with copper and a solderable plating).
All our vendors claim they can build such boards, but as far as I
known they do not use this technology very often,  and I don't want to
be their "guinea pig".
The question :
What kind of questions should I ask our bare board vendors in order to
check wether they are capable of building these boards with good
relaibility in a reproducible way ? What are the potential problems
that the board vendors should be aware of, and should have solved ?
Any ideas ?

Mark Roach

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