We are a telecommunication equipment manufacturer (OEM) and we wave solder all are boards assemblies. On almost all our PCB Assemblies we used small value ( 2pF, 6.8pF, 27pF, 39pF etc...) ceramic 50volts capacitors. When we wave our boards, we have to process our boards at a conveyor speed greater than 4 feet/min. with a dwell time below 2.3 seconds or we are in a lot of trouble. If we attemp to solder with a greater dwell time, the value of the capacitors changes sometimes by as much as 25% ( a 39pF becomes a 30pF after wave). We happened to have difficult to solder boards and it would help if we could increased the dwell time. The solder pot temperature is at 480°F. Now is there someone who knows a solution to that problem or is there someome who experience the same kind of problem? I certainly would appreciate any suggestion. Alain MAthieu Technical Specialist Thanks in advance. *************************************************************************** * 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] * ***************************************************************************