Hi Bev - Yes, I have seen an overly oxidized solderspheres on a BGA. But I
have observed this phenomena only once (and I have been lots of BGAs in
production!).

Dave Hillman
Rockwell Collins
[log in to unmask]



                      Bev Christian
                      <[log in to unmask]        To:       [log in to unmask]
                      ET>                      cc:
                      Sent by: TechNet         Subject:  [TN] Old Array Devices
                      <[log in to unmask]>


                      12/08/2003 10:44
                      AM
                      Please respond to
                      "TechNet E-Mail
                      Forum."; Please
                      respond to Bev
                      Christian






Good morning,
Have any of you ever seen an array device that did not solder because of
oxidation of the eutectic solder balls on the device?  To be clear, I am
excluding organic contamination, insufficient reflow temperature
conditions, poor paste, poor boards, misregistration, etc. - just
considering oxidation.  Thanks.

Bev Christian
Research in Motion

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