Hello Tech Netters, New board designs are incorporating BGAs on both sides of the board. During the 2nd side reflow, it appears that some of the larger BGAs installed on the 1st side reflowed which are now upside down are dropping slightly I suspect due to gravity. Dropping in the wrong direction, away from the pwb. Who can shed some info on how to either stop the BGAs from dropping, or apply some type of adhesive to the corners after 1st side reflow to secure the BGA in place? I am worried that securing the corners with an adhesive my later cause a reliability problem since you are now securing the corners to the pwb. thanks joe --------------------------------------------------- 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 -----------------------------------------------------