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May 2000

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Subject:
From:
"Stephen R. Gregory" <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Mon, 22 May 2000 19:25:33 EDT
Content-Type:
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In a message dated 05/22/2000 1:44:33 PM Central Daylight Time,
[log in to unmask] writes:

> Greetings All,
>
>  I would like to know the best height for spacing 20 pin LCCCs off the
>  board, and the best means of achieving this height.  My concern is that
>  there be some compliance to allow CTE mismatch between the part and the
>  board during themal cycling. Any recommendations?
>
>  Thanks,
>
>  Bill

Hi Bill!

You might want to check with NAS Interplex to see what they can do for you.
Look at this page at: http://www.nasinterplex.com/products.html and you'll
see a picture of a LCCC that has been converted into a "J" leaded part
through the use of their products. You can do it yourself or have them do it
for you.

Werner has spoke numerous times about the unreliability of LCCC's...you need
compliant leads with this device or risk reliability problems...

-Steve Gregory-

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