sorry for the comment but there are really no secrets about BGA s (if you dont mean very heavy BGAs) on both sides. One possible problem could be the repair if you use mirror BGA design, especially if vias in Pad are used. In this case you also to be carefully with Xray. Siggi -----Original Message----- From: John Belcher [mailto:[log in to unmask]] Sent: Montag, 31. März 2003 18:43 To: TechNet E-Mail Forum.; Zweigart, Siegmund Subject: Re: [TN] BGA's on both sides of an assembly Thanks for the help with the wise ass remark Ziggy. John Belcher ----- Original Message ----- From: "Zweigart, Siegmund" <[log in to unmask]> To: <[log in to unmask]> Sent: Monday, March 31, 2003 8:45 AM Subject: Re: [TN] BGA's on both sides of an assembly no secrets why should there be some? Siggi -----Original Message----- From: john Belcher [mailto:[log in to unmask]] Sent: Montag, 31. März 2003 17:57 To: [log in to unmask] Subject: [TN] BGA's on both sides of an assembly Any secrets to mounting BGA's on both sides of an assembly? --------------------------------------------------- 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 ----------------------------------------------------- --------------------------------------------------- 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 -----------------------------------------------------