BGA part is move out of pad after reflow. Tung ----- Original Message ----- From: "Tempea, Ioan" <[log in to unmask]> To: <[log in to unmask]> Sent: Monday, August 22, 2005 7:30 PM Subject: Re: [TN] Sifted part at BGA location What do you mean by shifting? Does it skew (angular shift) or move linearly? Ioan > -----Original Message----- > From: TechNet [SMTP:[log in to unmask]] On Behalf Of Le Thanh Tung > Sent: Sunday, August 21, 2005 9:16 PM > To: [log in to unmask] > Subject: [TN] Sifted part at BGA location > > Hello everybody. > At present, we are facing to one problem as below: > BGA component is shifted after go through reflow machine. > We have checked 100% mounting condition at BGA location before reflow, we > sure the BGA is not shifed but after reflow the shifted part defect still > happened. > although we lost much time to investigate but the problem is still not be > overcome. > The detail of BGA is as below: > - BGA size: 15 x 15 > - Pitch: 1 mm > - Ball dia.: 0.49 mm > - Product: RoHS PCBA > Anyone who have this experience? > Thanks > > --------------------------------------------------- > Technet Mail List provided as a service by IPC using LISTSERV 1.8e > 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 1.8e 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 1.8e 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 -----------------------------------------------------