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January 2003

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Subject:
From:
Franklin D Asbell <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Thu, 9 Jan 2003 08:29:25 -0600
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We're about to begin developing a process for plugging vias with conductive
silver epoxy. We've had the vendor's technicians here explainging the
processes, providing material and literature, and our experimenting will
begin later today...just wondering what all of your thoughts and/or
experiences are/were on this topic???

What (they've) we've planned out is;

electroless copper
flash copper
3 mil resist cleared 5 mils around the vias to be plugged
squeegee the conductive epoxy (from one side till 'tails' form on the back
side)
tack cure
final cure
clean
Final Image
Copper II
etc etc

Thanks,

Franklin

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