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Mon, 7 Aug 2000 08:49:45 -0700 |
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Steve... here's a link to Motorola's BGA page... I have some other links on
my website that deal with similar design issues.... - Bill Brooks
http://www.mot-sps.com/solutions/wired/pbga/layout.html#geometry
http://home.fda.net/bbrooks/pca/pca.htm
-----Original Message-----
From: Stephen R. Gregory [mailto:[log in to unmask]]
Sent: Friday, August 04, 2000 5:48 PM
To: [log in to unmask]
Subject: Re: [TN] BGA Pad Size
In a message dated 8/4/00 5:59:16 PM EST, [log in to unmask] writes:
<< TechNet Designers,
I was looking in IPC-SM-782 and IPC-D-279 and didn't find anything specific
on BGA pad guidelines.
I see in the IPC Technical Info book that there is an amendment 2 that
addresses BGA pad design.
While I am getting that amendment ordered, is there any standard "rule of
thumb" for pad size
relative to ball diameter on 1.27m and 1.0m BGA's that should be followed,
or that you have found to be
useful in designing boards with BGA devices?
Thanks for your help and opinions.
Regards....DT >>
Hi Darrel,
Just as Jeff said, Motorola's AN1231 app notes is pretty good, but he didn't
say where you could get it. Go to:
http://mot-sps.com/cgi-bin/get?/books/apnotes/pdf/an1231*.pdf
Just tryin' ta' help...
-Steve Gregory-
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