Bob I have used immersion silver numerous times in this application and the experience has been very positive. Best regards Lee ----- Original Message ----- From: "Bob Walker" <[log in to unmask]> To: <[log in to unmask]> Sent: Friday, June 23, 2006 10:42 AM Subject: [TN] PCB surface finish / EMI gasket > Hi All, > > Does anyone have any experience with what type of PCB surface finish to > use > with an EMI gasket? Or can anyone point me in the direction of any good > websites where I can learn what I need to know.....I'm not a materials > kind of guy. > > There is a 10G transceiver on my PCB design that contains an EMI > elastomeric > gasket that is made of conductive rubber and will come in contact with a > portion of the conductive surface of the PCB. Because of the RoHS > directive, > I've been leaning towards using an Immersion Silver finish for various > reasons. > But, I have a concern about the potential tarnishing effects of the > finish > over time. Will the seal between the silver finish and the gasket degrade > over > time? Is there anything else I'm missing with regards to using an ImAg > finish > with an EMI gasket? > > TIA for any feedback.... > > Regards, > Bob Walker > CebaTech Inc. > [log in to unmask] (mailto:[log in to unmask]) > [log in to unmask] (mailto:[log in to unmask]) > > > --------------------------------------------------- > 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 > ----------------------------------------------------- > --------------------------------------------------- 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 -----------------------------------------------------