really really good guy can plate 20 micro inch gold that is wire bondable...as for IG, you might want check the many reliability and bondability study in the past... here is a start: http://www.amkor.com/products/notes_papers/RHUEM_Article0198.pdf jk (my 1.72 cents) -----Original Message----- From: TechNet [mailto:[log in to unmask]]On Behalf Of LeVesque, Andy Sent: Tuesday, October 04, 2005 7:57 PM To: [log in to unmask] Subject: [TN] Need ENEPIG sources New to this forum and looking for recommendations, please. Hope this is the right place for this. We are doing COB with thermosonic gold wire ball bonding using ENEPIG as a board finish. Our customer will not let us use thick soft gold due to gold embrittlement concerns on the solder joints. When our board house gets the plating right our wire bonding goes great, but more times than not we're chasing plating variation within lots. We've been to the Far East working with the vendor to improve their plating baths and etc, but it appears that we're beginning to wear out our welcome with the supplier. Can any of you please recommend a Far East supplier (about 500K brds/yr) and a quick turn stateside ENEPIG PCB suppliers? thanks in advance, Andy LeVesque --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 1.8e 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 -----------------------------------------------------