I did a little search on the web and found that TI claims eight years when stored in their packaging . . . three years outside of it . . . HA! > -----Original Message----- > From: TechNet [mailto:[log in to unmask]]On Behalf Of Earl Moon > Sent: Thursday, May 09, 2002 9:07 AM > To: [log in to unmask] > Subject: Re: [TN] Palladium Leads > > > Bev and others, > > I've worked with Pd in one way or another, starting with hybrids in the > '60's but never thought about solderability over time. What is the "shelf" > life of Pd compared, say, with SnPb? Know the question is too general but > any guesses? > > Earl > ----- Original Message ----- > From: "Bev Christian" <[log in to unmask]> > To: <[log in to unmask]> > Sent: Thursday, May 09, 2002 7:59 AM > Subject: Re: [TN] Palladium Leads > > > > Henry, > > Back in the mid 90's when these parts (TI palladium plated) were > introduced > > in the company I worked at then, we had some teething problems. > But with > > some profile manipulation and training of operators we did not have any > > issues (Of course there was lab testing in the background). > The training > > had to be done because there will be more wetting angles closer to 90 > > degrees than they are used to. > > > > One other very important thing, this finish and I suppose other > palladium > > finishes, is/are finicky when it comes to fluxes. Some no-cleans work, > > others don't. We were lucky our old standard fluxes - Kester > R243 solder > > paste and 923 and 924FB wave solder fluxes worked well. Others didn't. > > > > And finally, how old are your parts and what conditions have they been > > stored in? I'm sure others will come up with other good questions and > > hopefully a few hints for you. > > > > regards, > > Bev Christian > > Research in Motion > > > > -----Original Message----- > > From: Henry Rekers [mailto:[log in to unmask]] > > Sent: May 8, 2002 8:33 PM > > To: [log in to unmask] > > Subject: [TN] Palladium Leads > > > > > > Has anybody out there experienced non-wetting problems with no-clean > > solderpastes on parts that have palladium coatings on the leads. > > Specifically, have you had this problem with Texas Instruments parts? > > > > Thanks. > > > > Henry J. Rekers > > Manufacturing Engineer > > > > > -------------------------------------------------------------------------- > -- > > ----- > > Technet Mail List provided as a free service by IPC using LISTSERV 1.8d > > 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 delivery of Technet send e-mail to [log in to unmask]: > SET > > Technet NOMAIL > > 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 > > > -------------------------------------------------------------------------- > -- > > ----- > > > > > -------------------------------------------------------------------------- > ------- > > Technet Mail List provided as a free service by IPC using LISTSERV 1.8d > > 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 delivery of Technet send e-mail to [log in to unmask]: > SET Technet NOMAIL > > 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 > > > -------------------------------------------------------------------------- > ------- > > > > ------------------------------------------------------------------ > --------------- > Technet Mail List provided as a free service by IPC using LISTSERV 1.8d > 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 delivery of Technet send e-mail to > [log in to unmask]: SET Technet NOMAIL > 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 > ------------------------------------------------------------------ > --------------- > --------------------------------------------------------------------------------- Technet Mail List provided as a free service by IPC using LISTSERV 1.8d 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 delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL 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 ---------------------------------------------------------------------------------