I believe the process for the selective solder over nickle (RLM) used tin/nickel and not pure sulfamate nickel. In the case I cited, we had to put on the immersion gold to prevent passivation in between nickel and HASL processes. At 02:12 PM 08/17/2005, you wrote: >Which works for a plating process, not too sure if the same applies where >the nickel is happily oxidising all of the time it is out of a plating tank. > >John > >------------------------------------ >Avanex >John Burke >Senior Manager RoHS Compliance >[log in to unmask] >40919 Encyclopedia Circle >Fremont >CA 94538 >tel: 510 897 4250 >fax: 510 979 0189 >mobile: 510 676 6312 >------------------------------------ > > >-----Original Message----- >From: TechNet [mailto:[log in to unmask]]On Behalf Of Scott B. Westheimer >Sent: Wednesday, August 17, 2005 1:01 PM >To: [log in to unmask] >Subject: Re: [TN] HASL over nickel > > >The was actually a process back in the 70's called RLM. For you that worked >in Silicon Valley back then it stood for Robert L Mac the owner of Santa >Clara Circuits who had the process patented. It was a nickel plated board >that was then covered completed with screen ink, sorry no dry film back >then, except for the pads and then tin leaded plated and reflowed. Was there >any issues? Not sure but there was a lot of boards made that way, for >several years. > >Scott B. Westheimer >Colonial Circuits >----- Original Message ----- >From: "Tom Moore" <[log in to unmask]> >To: <[log in to unmask]> >Sent: Wednesday, August 17, 2005 3:38 PM >Subject: [TN] HASL over nickel > > > > Our PC board supplier inadvertently supplied us with boards composed of > > gold over nickel rather than the specified HASL finish. While we kept some > > of the boards to keep our production line running, we sent the rest back > > to > > have the gold stripped off and run through the HASl process. Now our > > supplier is telling us that they will not be able to remove the nickel > > that > > has bonded to the copper pads. I'm going to have the supplier guarantee > > the > > board life in blood, but I would feel more confident in having > > confirmation > > by this group's expertise. Thanks for your help. > > > > --------------------------------------------------- > > 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 >----------------------------------------------------- > >--------------------------------------------------- >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 -----------------------------------------------------