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June 2011

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Subject:
From:
"Harp, Ken" <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Harp, Ken
Date:
Wed, 1 Jun 2011 19:53:48 +0000
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Hi Gerald,

Try talking with these folks:

www.sixsigmaservices.com

Good luck!

- Ken Harp

-----Original Message-----
From: Gerald Bogert [mailto:[log in to unmask]] 
Sent: Wednesday, June 01, 2011 12:22 PM
To: [log in to unmask]
Subject: [TN] Re-balling BGAs

June 1, 2011

 

Anyone have technical data to support (or not support) re-balling of BGAs to change from SAC balls to Pb balls???

 

My understanding is that because of the extra heat cycle involved, BGA manufacturers may not stand behind their part warranty if re-balling is done.  I also seem to recall a technical poster or paper presented at IPC several years ago which I believe indicated a reduction in reliability of the part if it is re-balled.

 

Also seems to me that if one were to re-ball a BGA, this would be a repair and not a reqork process and as such may require specific customer approval.


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