Selective finishes are common and are used where OSP is chosen for the soldering pads and ENIG (electroless nickel immersion gold) is used for the contacting surface. An alternative would be ENEPIG (electroless nickel, electroless palladium, immersion gold) across the board, NO OSP. This finish does both soldering and contacting very sucessfully particularly if you plan to use LF solder. Regards George Milad George Milad National Accounts Manager for Technology Uyemura International Corp (UIC) 249 Town Line Rd Southington CT 06489 [log in to unmask] Cell: (516) 901 3874 **************Start the year off right. Easy ways to stay in shape. http://body.aol.com/fitness/winter-exercise?NCID=aolcmp00300000002489 --------------------------------------------------- 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 -----------------------------------------------------