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January 2002

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Subject:
From:
Stephen Gregory <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Tue, 22 Jan 2002 21:41:52 EST
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Hey all ya'll!

VME stuff again. Pretty strict standard. Gotta new technology out there
called Stablcor from Thermalworks, problem that we're seeing is that board
thickness is going to increase, which violates the VME spec's. Not just from
the card-guide aspects, but will change the dimension where the P1 and P2
connectors interface with the backplane on a standard VME card cage.

Just wondering if anybody has anything out there (connectors, etc.), that
will allow you to "shoe-horn" ten-pounds, inna 1-pound bag, that will comply
with VME  spec's.

This board is 16-layers, within .063" without Stablecor, if we use 2-layers
Stablcor, it will increase .020-.025", with 3-layers Stablcor (the best, as
far as thermal dissapation and CTE solutions), it will increase .030-.035".

This Stablcor material sounds like a really good solution for thermal and CTE
solutions, but has a hard time staying within the dimensional spec's that are
called out in the VME spec's...trying to change these spec's I know is an act
of God...it's there, and it's done.

Just wondering if anybody else has explored this material, and have come to a
dead-end like I have....because of the reasons like I have.

-Steve Gregory-

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