Dear Darrel, You mention IWT as a potential replacement for OSP. What issues are you having with OSP that are causing you to look elsewhere? Or, are you just looking at a second source/ Thanks, Mike -----Original Message----- From: Darrel Therriault [SMTP:[log in to unmask]] Sent: Thursday, February 10, 2000 3:16 PM To: [log in to unmask] Subject: Re: [TN] White Tin PWB Carey, I'm curious......are you taking issue with the naming of the process or the process itself?? If you think IWT is not a good finish process, please elaborate. I am in the process of qualifying it as a potential replacement for OSP and would like to get all the data/opinion I can. Regards..........DT At 09:34 AM 2/10/00 -0800, you wrote: >Every time I see "White Tin" as a process, I get queezy. > >For the record, white tin is a metallurgical form of tin. The company (I'll >not name) that is trying to capitalize on using it as a process name has >bastardized terminology. Of course, your other choice is gray tin which is >unstable with poor properties and forms at low temperatures. So all of you >are using white tin, whether you know it or not. Otherwise, you'd be out of >business. > >I'm sorry... I just had to get it off my back. > >Carey > >-----Original Message----- >From: Jorge A Rodriguez <[log in to unmask]> >To: [log in to unmask] <[log in to unmask]> >Date: Thursday, February 10, 2000 8:07 AM >Subject: [TN] White Tin PWB > > > >We are about to start using immersion tin PWBs (white tin) , the boards we > >currently use are HASL and OSP. Are there any changes with the SMT process, > >component termination finish or reflow process when white tin boards are >used. I > >know that white tin provides a better pad finish than HASL, similar to OSP, >but > >wihout the organic coating. Any comments. > > > > > >Any iformation would be appreciated. > > > > > >Jorge Rodriguez > >Process Engineer > >Conexant Systems Inc > > > >############################################################## > >TechNet Mail List provided as a free service by IPC using LISTSERV 1.8c > >############################################################## > >To subscribe/unsubscribe, send a message to [log in to unmask] with following >text in > >the body: > >To subscribe: SUBSCRIBE TECHNET <your full name> > >To unsubscribe: SIGNOFF TECHNET > >############################################################## > >Please visit IPC web site (http://www.ipc.org/html/forum.htm) for >additional > >information. > >If you need assistance - contact Gayatri Sardeshpande at [log in to unmask] or > >847-509-9700 ext.5365 > >############################################################## > > > >############################################################## >TechNet Mail List provided as a free service by IPC using LISTSERV 1.8c >############################################################## >To subscribe/unsubscribe, send a message to [log in to unmask] with >following text in >the body: >To subscribe: SUBSCRIBE TECHNET <your full name> >To unsubscribe: SIGNOFF TECHNET >############################################################## >Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional >information. >If you need assistance - contact Gayatri Sardeshpande at [log in to unmask] or >847-509-9700 ext.5365 >############################################################## ############################################################## TechNet Mail List provided as a free service by IPC using LISTSERV 1.8c ############################################################## To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body: To subscribe: SUBSCRIBE TECHNET <your full name> To unsubscribe: SIGNOFF TECHNET ############################################################## Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional information. If you need assistance - contact Gayatri Sardeshpande at [log in to unmask] or 847-509-9700 ext.5365 ############################################################## ############################################################## TechNet Mail List provided as a free service by IPC using LISTSERV 1.8c ############################################################## To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body: To subscribe: SUBSCRIBE TECHNET <your full name> To unsubscribe: SIGNOFF TECHNET ############################################################## Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional information. If you need assistance - contact Gayatri Sardeshpande at [log in to unmask] or 847-509-9700 ext.5365 ##############################################################