Rich, > -----Original Message----- > From: Rich Peyton [mailto:p2rich@xxxxxxxxxxxxx] > > I'm referring to the effects that Flux has on > interconnections between the signal paths when soldering has OK - so what are the affects that would concern a signal integrity engineer? Is there significant DC leakage, high AC losses or changes in propagation delay caused by the residue? Your original posting stated that you saw effects with respect to high speed testing. Or did I misunderstand? > to be done. Specifically referring to " No Clean" solder > does leave a film/gummy residue behind. The Spec on this > particular "No Clean" solder passed Bellcore TR-NWT-000078 > spec, but that spec was replaced by Bellcore-GR-78-CORE spec. > Now I don't have either spec so maybe the newer spec tighten > up the allowable SIR ( surface Insulation Resistance )? > > Rich > -----Original Message----- > From: si-list-bounce@xxxxxxxxxxxxx > [mailto:si-list-bounce@xxxxxxxxxxxxx]On Behalf Of Degerstrom, > Michael J. > Sent: Friday, January 04, 2002 11:05 AM > To: p2rich@xxxxxxxxxxxxx; si-list@xxxxxxxxxxxxx > Subject: [SI-LIST] Re: Flux > > > > Rich, > > Could you please elaborate on your comments below? > Specifically, what does flux or other material have to do > with signal integrity? I'm envisoning a film left on the > surface of high speed microstrips that contributes to loss. > > Mike > > > -----Original Message----- > > From: Rich Peyton [mailto:p2rich@xxxxxxxxxxxxx] > > Sent: Thursday, January 03, 2002 10:22 AM > > > > Signal Integrity was improved with both cleaning processes > but there > > was a small percentage that still had contaminates/film left behind > > which had effects on high speed testing ( Kester being the worst ). > > > > Any comments/ articles/ web info / data would be appreciated :-) > > > > Thanks to those who reply, > > > > Rich > > > ------------------------------------------------------------------ > To unsubscribe from si-list: > si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field > > or to administer your membership from a web page, go to: > //www.freelists.org/webpage/si-list > > For help: > > si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field > > List archives are viewable at: > //www.freelists.org/archives/si-list > or at our remote archives: > http://groups.yahoo.com/group/si-list/messages > Old (prior to June 6, 2001) list archives are viewable at: > http://www.qsl.net/wb6tpu > > > ------------------------------------------------------------------ > To unsubscribe from si-list: > si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field > > or to administer your membership from a web page, go to: > //www.freelists.org/webpage/si-list > > For help: > > si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field > > List archives are viewable at: > //www.freelists.org/archives/si-list > or at our remote archives: > http://groups.yahoo.com/group/si-list/messages > Old (prior to June 6, 2001) list archives are viewable at: > http://www.qsl.net/wb6tpu > > ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field or to administer your membership from a web page, go to: //www.freelists.org/webpage/si-list For help: si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field List archives are viewable at: //www.freelists.org/archives/si-list or at our remote archives: http://groups.yahoo.com/group/si-list/messages Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu