Solderable surface + solder & Flux + proper TTP (time temperature profile) = good solder connection. I would evaluate this the same way you do an MLF or LGA. If the process results look good on the rest of the board and you know the BOT part is solderable you are golden. X-ray for voids as a verification as you would a BGA or a D-PAK. -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Kevin Glidden Sent: Tuesday, July 15, 2008 8:20 AM To: [log in to unmask] Subject: [TN] Inspection of bottom only terminations / process verification Hello Netters. Looking for some advice on how to handle a new bottom only termination device we have. We don't normally run devices with bottom only terminations, so the inspection has not been an issue, until now. Any recommendations on how to inspect these, or verify the process is working? I am thinking I might process some samples and send them to a lab for x-sections (we do not have x-section capability here). Is that sufficient? Thanks in advance! Kevin Glidden Manufacturing Engineer Luminescent Systems Inc. --------------------------------------------------- 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 -----------------------------------------------------