Steve,
I don't think anyone believes that CGA's are more manufacturable than
standard BGAs.  They just know that a large ceramic component with high lead
balls can't hold up in a reliability sensitive application.  As far as ease
of use, they are about the same as high lead balls.  Nowhere near as nice as
eutectic balls.  IBM is the largest
manufacturer of column grid arrays for their own components.  Our company
builds a preform with columns embedded for attachment to any LCC, LGA or
CBGA component.  The IBM CGA web page can be found at
http://www.chips.ibm.com/products/interconnect/documents/sc/ccga.html
and our CGA page is at http://www.solderquik.com/

-----Original Message-----
From: [log in to unmask] <[log in to unmask]>
To: [log in to unmask] <[log in to unmask]>
Date: Thursday, July 30, 1998 5:56 AM
Subject: [TN] Column Grid Arrays


>All,
>
>Maybe I just too new to this SMT thing, but can someone clue me in on what
>exactly a column grid array device is?  I have been presented with a
proposed
>build to print project that according to our customer may use column grid
array
>devices instead of BGA's to "enhance manufacturability".
>
>Thanks in advance of your support!!
>
>Steve McBride
>Frontier Electronic Systems Corp.
>[log in to unmask]
>
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