Hi Brian, Thanks for the input. No, we will not short-circuit all evaluations... Aside from reading the data sheets, I hope to use this information to drastically narrow down which brands and models we look at and what we test on each one. Folks who have already run a "stencil abandon time" test, for instance, can save us a bunch of time and energy if their equipment and environment is similat to ours. Applications specific to our products and processes will still need to be checked out. Thanks for the feedback. Charlie B. Please respond to "TechNet E-Mail Forum." <[log in to unmask]>; Please respond to Brian Ellis <[log in to unmask]> To: [log in to unmask] cc: (bcc: Charles Barker/US/I-O INC) Subject: Re: [TN] THANKS and no clean info request Charlie Welcome back. I'm sure several responses may help you but, before you short-circuit all evaluation, please remember the two basic facts: 1. Water-soluble chemistry gives you the widest operating window 2. "No-clean" chemistry gives you a narrow operating window. This means that it is really impossible to just switch, as there are so many parameters to consider, e.g. solderability of boards and components, desired reliability of end product etc., etc., etc. Another point that it is important to realise: the term "no-clean" covers a multitude of sins and the easiest "no-clean" fluxes/pastes to use are those which are the most active and may leave the most active residues, causing future problems. I would therefore counsel caution in interpreting the responses to your enquiry. Caveat emptor. Brian Charles Barker wrote: > > Hello Technetters; > > As Steve Gregory let slip last week, I am back on the job. I'm somewhat > inundated with catching up, so I had not checked back in on TechNet right away. > > MANY THANKS for all the prayers and good wishes. They were felt and very much > appreciated by both my wife and me. I still have a good bit or soreness from the > trauma of the surgery, but in general, I feel very good. > > Now back to the work/no clean thing: > > I am asking a BIGGG favor! > > I need to take a serious look at switching our process from a water soluble flux > soldering operation to a no clean one. Normally, I would put several cored wire > solders, liquid fluxes and solder pastes through a rigorous evaluation process. > That could be considered re-inventing the wheel, since many of you have probably > already done that. > > If any of you have done this and could share the results (OFF-LINE, of course), > I would be greatly obliged. > > I would like to know which brands, which model numbers, which alloys and under > what conditions they were tested, as well, of course, as the results. > > THANKS A BUNCH!!! > > Charlie B. > [log in to unmask] > -- Brian Ellis Protonique SA PO Box 78 CH-1032 Romanel-sur-Lausanne, Switzerland Voice: +41 21-648 23 34 Fax: +41 21-648 24 11 E-mail: [log in to unmask] URL: Technical and consultancy divisions: http://www.protonique.com Web services division: http://www.protonique.com/webserv ############################################################## 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 ##############################################################