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April 2003

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Subject:
From:
Dave Chapman <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Mon, 14 Apr 2003 06:46:46 -0500
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Morning An, we have successfully screen printed our vias closed. this was to
prevent conformal coating to leak to the other side. 1:1 aperture
We are having a couple boards via filled with silver paste by board house.
There are two conductive type, Methode makes one and Dupont makes another, I
do not know the numbers. Maybe someone else does.
Dave Chapman
Manufacturing Engineer
Circuit Service Inc.


-----Original Message-----
From: An [mailto:[log in to unmask]]
Sent: Monday, April 14, 2003 5:59 AM
To: [log in to unmask]
Subject: [TN] via filling


Hello,
I'm searching for information on filling of burried vias, blind vias, and
micro-vias. The more information I can find the better.
Which technology is available? Conductive or non-conductive? Plating or
screen-printing?  Which suppliers?
Which process do you use? How are your experiences with it? For which
purposes do you fill?
I thank you in advance.
Sincerely
An gielen

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