No problem if you use a hydrochloride activated water-soluble flux! Brian Ingemar Hernefjord (KC/EMW) wrote: > Noone with ideas? > I've asked specialists at Binghamton too. > Phil? Ruby? --. ..- -. - . .-. ..--.. > Ingemar > > -----Original Message----- > From: Ingemar Hernefjord (KC/EMW) > Sent: den 5 april 2005 18:09 > To: 'TechNet E-Mail Forum'; [log in to unmask] > Subject: RE: [TN] Mousebites... > > > Hi Steve, > alert experts already online. I have two pictures on Nickel plated AlSiC, chemistry and who did > it can I not shout out just now, except that it's perfecly free from P, very very 100% Ni. It's greyish, > dull and matte, and very good for 60Sn soldering, at least speaking wetting. Now, we suspect something > happens after soldering the glass RF glass beads for SMA. Hermeticity becomes leakers, not gross, but > enough for rejection. I suspect some kind of fragile interface layers, cross sections indicate that, but > suspected region is much less than micron thick and hard to study. > > When you look at the pics on Steve's mousetrap gallery, what do you think about the very tiny superficial > items, grains or nanonuggets or columns or how they can be caracterised as...do you think they are pure nickel > too? Are they atomary bound to the bulk plating or vagabonds that don't take part in the serious solder-nickel > wedding party? If you bite on a gold dollar you'll have to go through a thin layer of human debris and stuff from > the underwares first...best I could compare with. Can there be such a 'debris' layer on top of nickel > plating too, and if so, how do I get rid of it? > > The pics are 10k resp 20k magnification. > > Crazy q, not optimistic about answer.. > > Ingemar Hernefjord > Ericsson Microwave Systems > > > > -----Original Message----- > From: TechNet [mailto:[log in to unmask]] > Sent: den 5 april 2005 15:45 > To: [log in to unmask] > Subject: [TN] Mousebites... > > > Mornin' all ya'll! > > Came back in this morning and looked at the fabs that I posted about > yesterday some more. We're going to reject them. > > Not just because of the mousebites on the annular pads, but we've > discovered that there are mousebites all over everything. In some > cases reducing the trace widths. > > Take a look at; "Mousebites 1-4" at: http://www.stevezeva.homestead.com > If it were just the annular pads, we might have accepted them. But not with > them occuring all over the fab like this. > > Kind regards, > > -Steve Gregory- > Senior Process Engineer > LaBarge Incorporated > Tulsa, Oklahoma > (918) 459-2285 > (918) 459-2350 FAX > __________________________________________________________________ > This message may contain information that is privileged and confidential to > LaBarge, Inc. It is for use only by the individual or entity named above. > If you are not the intended recipient, you may not copy, use or deliver > this message to anyone. In such event, you should destroy the message and > kindly notify the sender by reply e-mail. > > --------------------------------------------------- > 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 -----------------------------------------------------