Sheila, it is quite common on telecom boards , I used to do it on DDN boards , ages ago, let's hope one of Nortel guys can help you ; this subject 's been quite well answered by them with relevant standards before . Mind you they may be internal standards . It's somewhere in the files . paul >---------- >From: User[SMTP:[log in to unmask]] >Sent: Wednesday, 15 April 1998 6:39 >To: [log in to unmask] >Subject: [TN] temp cycling of soldered assemblies > >TechNet - > >Is temperature cycling after solder rework a normal requirement? I couldn't >find anything in my copy of J-STD-001 addressing this, but I have a supplier >telling me it's "always" done. After temp cycling the solder joint is >inspected again to see if it's still "okay"....??? I'm thinking this may be >the old turnip truck trick, but I'm not sure. > >This is for proposed rework of a solder joint that was supposed to meet IPC >J-STD-001A, Class 3. The original solder was Sn96AWROL15 per J-STD-006. >Thanks! > >Sheila Smith @ Tracor AES > >################################################################ >TechNet E-Mail Forum provided as a free service by IPC using LISTSERV 1.8c >################################################################ >To subscribe/unsubscribe, send a message to [log in to unmask] with following >text in the body: >To subscribe: SUBSCRIBE TechNet <your full name> >To unsubscribe: SIGNOFF TechNet >################################################################ >Please visit IPC web site (http://jefry.ipc.org/forum.htm) for additional >information. >For the technical support contact Dmitriy Sklyar at [log in to unmask] or >847-509-9700 ext.311 >################################################################ > ################################################################ TechNet E-Mail Forum provided as a free service by IPC using LISTSERV 1.8c ################################################################ To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body: To subscribe: SUBSCRIBE TechNet <your full name> To unsubscribe: SIGNOFF TechNet ################################################################ Please visit IPC web site (http://jefry.ipc.org/forum.htm) for additional information. For the technical support contact Dmitriy Sklyar at [log in to unmask] or 847-509-9700 ext.311 ################################################################