Have you reviewed a copy of the Sandia report - "Evaluation of Low-Residue Soldering..." It is available for the asking. I think the contact name is Dennis Anderson ([log in to unmask]). In it they considered the High Frequency effects of no clean fluxes among other things. > ---------- > From: [log in to unmask][SMTP:[log in to unmask]] > Reply To: TechNet Mail Forum.;[log in to unmask] > Sent: Tuesday, January 20, 1998 5:30 PM > To: [log in to unmask] > Subject: [TN] RF Circuitry and Rosin Core Solder > > Hello All, > > Has anyone dealt with or have found any issues with using a Rosin > Core wire > solder on RF circuitry? Like Kester (no clean) "282" Rosin Core > (63/37) > We have heard of "theories" that the flux left behind after > soldering > has some negative effect on the operation of the RF Circuit. > Anyone? > > Thanks, > > Mark Pozorski > ADC Telecommunications > > ############################################################## > 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. > For the technical support contact Dmitriy Sklyar at [log in to unmask] or > 847-509-9700 ext.311 > ############################################################## > ############################################################## 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. For the technical support contact Dmitriy Sklyar at [log in to unmask] or 847-509-9700 ext.311 ##############################################################