We have some right angle SMT fine pitch butt joint two row connectors that due to excessive force placed on them have caused cracks in the solder joint. We have worked out the mech. issue to relieve the pressure. I have some joints that just show a crack in the joint and others that there is a clear break. Each connector is $7.00 ea. and we have seen this on~100 connectors. My questions are the following: 1) The original thinking was we could just use our BGA rework machine to blow hot air on the cracked joints, remelt the solder and the joint would be good again. But then do I have to worry about a possible lead coplanar problem? Since I'm reflowing the entire connector will that really be an issue or the damage is done and the leads that are cracked are now "bent" and I need to worry about it? 2) Would the answer to the above question change for different senecios: a) Entire row has a clear break b) Only a few solder joints are cracked (out of 50) but no clear break c) Only a few solder joints are cracked but some have a clear break 3) The connectors are in a row of 5, should I also reflow connectors that do not show any sign of cracks, even thou other connectors in the row have cracks? The assumption is that the parts that are not cracked have seen the same stresses as the ones with cracks. Thank you as always. Best Regards, Mike Forrester LeCroy Corporation --------------------------------------------------- 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 -----------------------------------------------------