Is there any guide lines from IPC on component as how old components can be used from soldering point of view assuming tin plated leads? Components after that period can create soldering problem due to oxidation or something else. This question has been raised by our quality department after getting components manufactured two years ago. Any help in this matter will be highly appreciated. re, ken patel ______________________________________________________ Ken Patel Phone: (408) 490-6804 575 Cottonwood Dr. Fax: (408) 490-6859 Milpitas, CA 95035 Beeper: (888) 769-1808 ############################################################## 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. For the technical support contact Dmitriy Sklyar at [log in to unmask] or 847-509-9700 ext.311 ##############################################################