Hello. New to the list and wedgebonding. Searched the archives. I saw posts about bonding to plated pads on boards, but saw nothing on using or bondability with plated wires. I must avoid any oxidation on the wires. I'm trying to find out successes, feasability and wire suppliers for plated aluminum wire. Gold plating is the best for the outer coating for me. From what I've read its actually 150 microinches Ni over 5-8 microinches of Au. Also from what i've read, the nickel is doing the actual bonding. The wire is .012" or 305 um diameter. Pure gold it out of the question! :) The bonding surface is copper etched PCB, or sometimes gold plated brass. Both proven to bond well with pur AL wire. Thank you! --Scott --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 15.0 To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/archives Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 -----------------------------------------------------