About 2 years ago my company developed an OC-12 Telecommunications option running at 622MHz for one of our products. During the prototype debug cycle, the test engineers were having an extremely difficult time getting the boards up and running and keeping them running. After exhausting all means of inspection and touch-up to the solder joints which failed to correct the problems, we decided to clean the "no clean" residue off just for the hell of it. "Low and Behold" all the problems disappeared. So, from our experience no clean paste residue does act as a conductor at 622MHz. [log in to unmask] ______________________________ Reply Separator _________________________________ Subject: Rf interference from No cleans (GEN/ASSY/DES) Author: [log in to unmask] at INTERNET Date: 4/30/97 12:22 PM Hello, Does anyone have any information on the effect of no clean residues on RF. I am interested at what frequency interference begins (if any) and what type of device you are talking about ie. phine, radio etc.. I am interested in both PCB and Hybrid Thick Film (alumnia) applications. Also, is anyone using no cleans in the Gigahertz level - if so what level? Thanks Brian *************************************************************************** * TechNet mail list is provided as a service by IPC using SmartList v3.05 * *************************************************************************** * To subscribe/unsubscribe send a message <to: [log in to unmask]> * * with <subject: subscribe/unsubscribe> and no text in the body. * *************************************************************************** * If you are having a problem with the IPC TechNet forum please contact * * Dmitriy Sklyar at 847-509-9700 ext. 311 or email at [log in to unmask] * *************************************************************************** *************************************************************************** * TechNet mail list is provided as a service by IPC using SmartList v3.05 * *************************************************************************** * To subscribe/unsubscribe send a message <to: [log in to unmask]> * * with <subject: subscribe/unsubscribe> and no text in the body. * *************************************************************************** * If you are having a problem with the IPC TechNet forum please contact * * Dmitriy Sklyar at 847-509-9700 ext. 311 or email at [log in to unmask] * ***************************************************************************