loctite may have some data on this. Michael Weekes Master Engineer - EOE Hamilton Sundstrand / UTC MS 190-6 4747 Harrison Ave. PO Box 7002 Rockford, IL 61125-7002 815 394 3362 [log in to unmask] -----Original Message----- From: Stephen Ayotte [mailto:[log in to unmask]] Sent: Friday, July 11, 2003 8:28 AM To: [log in to unmask] Subject: [TN] Underfilling BGA components Does anybody have data and experience with the improvement or degradation in reliability by underfilling a cavity down, 1 mm BGA pitch, PBGA package? The PCB thickness in this situation would be greater than 0.110. Thanks. Stephen Ayotte, IMD Manufacturing Quality Senior Engineer Dept. N62V, Bldg. 966-2, Office 2J1309, Mail Drop 967A Phone (802) 769-4775, t/l 446-4775, Fax (802) 769-4139 Pager (802) 878-5386 Pin #4685 - external, 74685 - internal --------------------------------------------------- Technet Mail List provided as a free 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/html/forum.htm for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ----------------------------------------------------- --------------------------------------------------- Technet Mail List provided as a free 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/html/forum.htm for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 -----------------------------------------------------