Any data that you obtain would be of great interest to us. We also operate in a similar environment and have not used BGA's because we didn't think that they would stay on due to the thermal mismatch between the board and the chip. ---------- From: OBRIEN GERARD To: [log in to unmask] Subject: qualification plan for BGA soldering process. Date: Thursday, January 02, 1997 4:04PM we would like to change over from QFP's to BGA in our assembly process but before doing so I need to define the reliability test program for the assembly process. The environment that the assembly will be used in undergoes many thermal excursions during a day, -40C to + 30C is not untypical. Any suggestions regarding a specification that I can use as a starting point. The BGA's will be plastic body up to 400 I/O's. Regards. ************************************************************************ *** * TechNet mail list is provided as a service by IPC using SmartList v3.05 * ************************************************************************ *** * To unsubscribe from this list at any time, send a message to: * * [log in to unmask] with <subject: unsubscribe> and no text. * ************************************************************************ *** * If you are having a problem with the IPC TechNet forum please contact * * Dmitriy Sklyar at 847-509-9700 ext. 311 or email at [log in to unmask] * ************************************************************************ *** *************************************************************************** * TechNet mail list is provided as a service by IPC using SmartList v3.05 * *************************************************************************** * To unsubscribe from this list at any time, send a message to: * * [log in to unmask] with <subject: unsubscribe> and no text. * *************************************************************************** * If you are having a problem with the IPC TechNet forum please contact * * Dmitriy Sklyar at 847-509-9700 ext. 311 or email at [log in to unmask] * ***************************************************************************