How appropriate. I re-boot my computer and see David's comments, which I agree with. Since this is Friday, I must digress and defend my spelling. It is the 70s and an African-American friend[ I only distinguish the difference to add clarity to this point, because a friend is a friend even if he's English( just kidding Graham)] and I meet at the coffee machine in the morning and he is complaining about he must be getting to old to play sports anymore and put up with all the pain. I told him " Time wounds all heals". He said " Are you calling me a heel"? I said" Why no( drum roll, please), you're a sole, Brother. Dewey -----Original Message----- From: TechNet [mailto:[log in to unmask]]On Behalf Of David Douthit Sent: Thursday, March 10, 2005 5:29 PM To: [log in to unmask] Subject: Re: [TN] BGA Reliability Test Protocol Bob, That's the whole idea! There are none. There some recommendation that are very general in nature but there is no longer a "one size fits all" testing standard. You must determine the end use environmental conditions and life warranty requirements for each product and test accordingly. You must learn to correlate testing to field conditions (not easy - you need a lot of experience). This is causing serious soul (sole for Dewey) searching for Pb free builds! Good luck! David A. Douthit Manager LoCan LLC bob wettermann wrote: >Dear Technetters: > >In reviewing the myriad of BGA reliability tech papers there seems to be little commonality in the type of test protocols. There are tests that are industry specific, device vendor specific and customer specific. > >What guidance in terms of minimum mechanical solder joint strength and reliability testing would the knowledgeable designers (for CLASS II products)have for us? (We are NOT designers of circuit boards, systems or devices). Any test protocol standards? What would be the acceptance criteria for pass/fail be? What type of measurements would be required as a minimum? > >Best Regards >Bob Wettermann > > >Bob Wettermann > >--------------------------------------------------- >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 >----------------------------------------------------- >PH 847-767-5745 > > > > --------------------------------------------------- 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 -----------------------------------------------------