A review of the Kester data sheet indicates that the flux chemistry is corrosive and electrically conductive. You didn't specify the avionics application your hardware is being designed for, so I'll assume the most demanding - space flight. Avionics hardware reliability is considered critical to the vehicle, crew, and mission. Some materials (even metals) sublimate at reduced pressure - not good if there are humans or optical surfaces in the immediate area. Electrical isolation drops. NASA Workmanship requirements and J-STD-001CS prohibit use of this flux chemistry on flight and mission critical electronics, unless there is sound engineering rationale, backed up by objective evidence, that use of this material will not damage or degrade the hardware, and that the cleaning process is effective, in control, and verifiable. Use requires customer approval prior to use. Bob -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of prasad godavarti Sent: Sunday, October 02, 2005 11:56 AM To: [log in to unmask] Subject: [TN] use fo high halide flux on avionics: kester 331 flux does anyone have any information on the performance of cored wire kester 331 fluxed sn-pb solder. I am unable to find much in the literature, in fact all i can see is words of caution: do not use. Thanks __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com --------------------------------------------------- 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 -----------------------------------------------------