You may want to sacrifice one board and have cross sections taken to analyze and identify what may really be going on at those plated thru-holes. Have this done by an independent lab. Once you get the results back, let us know what they are -- at that point we'll all be better prepared to advise. For now...be really nice to your supplier -- he's more likely to be responsive to your requests -- even if you have to grit your teeth :-) -Carrie -----Original Message----- From: Tom Parkinson - Quality System Manager - WinTronics, Inc. [mailto:[log in to unmask]] Sent: Thursday, January 30, 2003 4:49 PM To: [log in to unmask] Subject: [TN] Pink Ring Greetings! I'm having conversations with a board vendor. We received some boards that are showing signs of Pink Rink (Actually it's Green Ring on these boards...). I know IPC-A-600 & 610 & J-STD-001 all say that Pink Ring is acceptable. However - past shipments of boards from this vendor do not have Pink Ring and if he didn't sharpen his drill bits on-time, why should I accept this anomaly. Additionally some of the areas that exhibit pink ring are bordering on what looks like an internal delaminations. My thoughts are: Order of Precedence is what is agreed by the customer & vendor and the IPC documents are below what the customer wants. If the vendor's quality or process has changed to exhibit Pink Ring (or any other anomaly), I don't feel I have to accept what I would consider a lower quality item than was previously supplied. Questions: Any new info on Pink Ring or other cosmetic anomalies? What would you do??? Thanks --------------------------------------------------- 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 ----------------------------------------------------- --------------------------------------------------- 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 -----------------------------------------------------