Hi Phil! Got the picture you sent yesterday afternoon posted now, it's at: http://stevezeva.homestead.com/files/LP_BGA_Crack.jpg Man, fractured clean through! Do all the fractures look like that? Steve -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Phillip Bavaro Sent: Tuesday, February 12, 2008 7:59 PM To: [log in to unmask] Subject: [TN] Samsung Memory BGA Failure I am wondering if anyone else out there has run into a problem with a Samsung Flash memory device (in this case, the 0.8 mm pitch, 107 pin sac305 BGA) where the connections are cracking right at the interface between the pwb and ball. I had read about some Samsung BGA problems but cannot find the link to the information now. We have other BGA's on the same board without any issues. Shear strength test results are very low as well (if the flash has not already popped off by itself). I'll try to get some pictures to Steve to put up tonight. My current thoughts are CTE's are grossly mis-matched as we haven't found anything on the pads to account for the gross failure. Thanks in advance, Phil --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 15.0 To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/archives Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 ----------------------------------------------------- --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 15.0 To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/archives Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 -----------------------------------------------------