Andre, If the flux gets in there so will the solder! David A. Douthit Manager LoCan LLC Andre Leclair wrote: > We have recently run across a situation which has baffled us. On the PCB > in question there are 4 Wave soldered PLCC sockets. 1 of these is being > reported as having solder shorts underneath. On the returned units we x- > rayed the sockets ( can't see under) and found shorts on 1 socket location > only. The shorts were consistanly on the same pin area for all the sockets > were the shorts were found. We removed a socket only to find the board > very clean underneath...no shorts.. > The socket has a bottom retainer to hold all the pins in place.. This was > pried off and to our surprise there was the short.. inside the connector. > The amount of solder was enough to surround 3 pins in 2 seperate areas. > The hole around the pins in the plastic base is no more then 0.002". > > Does any one have any idea how solder could have gotten up inside the > connector ( consistantly in the same location)? Or has any one seen this > before? > > We have run this assembly several times in the past with no difficulty. > > --------------------------------------------------------------------------------- > Technet Mail List provided as a free service by IPC using LISTSERV 1.8d > 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 delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL > 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 1.8d 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 delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL 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 ---------------------------------------------------------------------------------