Just to add my two cents, Gold over copper does work we have some old parts that calls it up. This is because of the minute effect of nickel on the electromagnetic field around the parts. Sometimes nickel is avoided because it has to be. Alain Savard, B.Sc. Chemical Process Analyst CAE Electronics Ltd. e-mail: [log in to unmask] -----Original Message----- From: Roger M. Stoops [mailto:[log in to unmask]] Sent: June 13, 2000 6:19 PM To: [log in to unmask] Subject: [TN] Gold over Copper?!? I am losing my mind... I have just been asked to specify a flex circuit to have 3-5u in of gold directly on the copper. (That's right folks, no nickel!) This might be okay if a few parts were being soldered in place, but one end of the flex is for a FPC connector (also gold plated). Is this a good idea? Your comments, please, please, PLEASE! Or else I am losing my mind... hey, where did I put my mi... Sincerely, Lost One Roger M. Stoops, PCB Designer Spectra Precision Inc. Ph: 937.233.8921 5475 Kellenburger Rd. 937.233.4574 ext Dayton, OH 45424-1099 288 USA Fax: 937.233.7511 Member IPC Designer's Council, C.I.D. ############################################################## 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 ##############################################################