Ervin - get yourself a copy of the new IPC4552 specification covering ENIG. Use this document to specify the ENIG finish for your PWB's. Regards Gerard O'Brien Co-chairman of 4552 -----Original Message----- From: Ervin Weisz [mailto:[log in to unmask]] Sent: Thursday, February 06, 2003 5:43 PM To: [log in to unmask] Subject: [TN] Evaluating ENIG finish Hello Everyone, I wish to present you with an issue that has troubled me for quite a while. We have been ordering more and more PCBs with ENIG finish and are generally pleased - it's flat, it solders nicely and the products seem to be O.K. However, on the other hand - we are very well aware of problems associated with ENIG, i.e - the "black pad" phenomena - solder joints cracking, components actually "popping off" and other "goodies". I am looking for good means to evaluate my ENIG finished boards, before I waste a considerate amount of money while trying to assemble them. Luckily for us, our manufacturer seems to understand our dilemma and is very willing to cooperate with us on performing any in-process or final test that we specify. So, here's the catch: what do I specify ? Assume that you could ask for anything (within reason, of course) - what tests would you ask your manufacturer to perform to assure you that he will give you high quality ENIG finish, good solderability, durable, long life solder joints, etc.? Thank you in advance, Yehuda E. Weisz +(972)-3-6342045 +(972)-53-556897 _____ Do you Yahoo!? --------------------------------------------------- Technet Mail List provided as a free 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/html/forum.htm for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ----------------------------------------------------- Yahoo! Mail <http://rd.yahoo.com/mail/mailsig/*http:/mailplus.yahoo.com> Plus - Powerful. Affordable. Sign up now <http://rd.yahoo.com/mail/mailsig/*http:/mailplus.yahoo.com> --------------------------------------------------- Technet Mail List provided as a free 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/html/forum.htm for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 -----------------------------------------------------