Hi guys and girls!! I have a question that I think many of you can answer. Today we solder FET chips with Au/Sn solder onto a DBC substrate with Au surface. The soldering area of the FET is Chromium/Nickel/Silver. I want to replace the Au/Sn solder with "something else".. I don't want to glue the chip to place, only solder. The FET working temperature reaches up to 120degC. Any ideas on what kind of solder to use? __________________________________________________ Jan Merstrand Microwave MCM, Design/Production Support Ericsson Microwave Systems AB. Defence Manufacturing Office address: Bergfotsgatan 2, SE-431 84 Mölndal Phone: +46 31 747 0725, Fax: +46 31 747 3515 ############################################################## TechNet Mail List 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://www.ipc.org/html/forum.htm) for additional information. If you need assistance - contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ##############################################################