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Subject:	Re: BGA Warp
From:	Bill Raymond <[log in to unmask]>
Reply To:	TechNet E-Mail Forum.
Date:	Thu, 6 Sep 2001 08:29:08 -0400
Content-Type:	text/plain
Parts/Attachments:	text/plain (26 lines)

Werner, as a follow up.  JEDEC has a published spec that we have found that
states an 8 mil warp spec (7.87 mil)... in fact it used to be 6 mil.  The
spec can be downloaded at www.jedec.org/download/pub95/MO-151.pdf

Does anyone have any ideas of how to process a PBGA that exhibits 8 mil of
warp??

Bill....


At 03:56 AM 09/06/2001 -0400, you wrote:
>Hi Bill,
>BGA warpage is the consequence of an asymmetric [=bad] design. My
>recommendation, get somebody else's BGA.
>Werner Engelmaier

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