Hi Brian,
Phoenix x-ray presented to the 610 technical committee last week in MN. The
presentation included the concept of a tab added to the pad geometry to
support Automated X-Ray evaluation of BGA wetting. The idea as I see it is
to see if a graduated fillet occurs on the tab which can be observed through
x-ray evaluation. Seemed reasonable and the illustrations used in the
presentation supported the concept well.
I didn't see much discussion of the process on the web but try:
www.phoenix-xray.com

Best regards,

Mel Parrish
[log in to unmask]

-----Original Message-----
From: TechNet [mailto:[log in to unmask]]On Behalf Of Smith, Brian
(bsmith37)
Sent: Monday, October 06, 2003 12:23 PM
To: [log in to unmask]
Subject: [TN] Non Round BGA Pads


Good afternoon all.  Could anyone out there point me towards some
articles/papers on using non-round
pads for BGAs to improve X-ray inspection?  So far all I have been able to
find
are vague hints from Bell Labs or
IBM, but nothing substantial.

Thanks in advance!

Brian Smith
AMT
GCSD Harris Corporation
321-729-3808 (p) 321-729-7348 (f)

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