Fellow Tech Netters: I posted an inquiry on " Contact Plating Requirements ". I did not receive what I was searching for. Therefore, I will restate my original inquiry. Is there any matrix such as the one stated in IPC-2221 Table 4-3 Final Finish, Surface Plating Coating Requirements for Connector Contacts Plating requirements. I have concerns with plating thickness and materials selections that I have witness on Overseas Product. I have measured nickel thickness around 40 micro inches. What is an acceptable minimum and max. thickness. I have also witness Cu/Ni/ with some form of tin lead. A second was a barrier metal other than Ni on Base Cu and SnPb. Really would like to hear some experiences from the DINOSAURS out there. Victor G. Hernandez Component/Material Failure Analysis Eng. PS4-1, Rm. 132 Ofc: 512-725-3471 Pgr: 512-907-0005 --------------------------------------------------------------------------------- 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 ---------------------------------------------------------------------------------