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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