Electronics Forum | Thu Sep 06 12:49:47 EDT 2001 | Daniel
I am trying to convert a customer from a water wash process to no-clean but am receiving much resistance. They suspect that no-clean residue played a part in field failures they experienced several years ago. They are quoting an AT&T study that state
Electronics Forum | Thu Sep 06 13:19:36 EDT 2001 | mparker
The main criteria is at what frequency is the RF operating? If it's in the microwave region, forget no-clean. Low frequencies - 0 to 100 MHz, probably ok. Beyond that, it's application specific. Depends on components used and circuit design. The p
Electronics Forum | Mon Aug 19 11:36:27 EDT 2019 | bulur
How does no-clean flux residues on a PCB assembly impact the ROSE testing? Does no-clean flux residues on the PCBA dissolve in solution of ROSE tester and increase ionic contaminants level in terms of NaCl per surface area? Is ROSE tester solution (a
Electronics Forum | Mon Aug 19 13:32:54 EDT 2019 | aqueous
ROSE testing a post-reflow assembly which has been reflowed using no-clean flux may not yield information that is helpful. No-clean flux technology works by encapsulating the flux's activators and other chemical constitutes that would be harmful if l
Electronics Forum | Mon Aug 19 17:06:27 EDT 2019 | bulur
Hello Mike, Thank you for your response. This information is very helpful for us. Thank you again,
Electronics Forum | Tue Oct 29 21:27:21 EDT 2019 | aqueous
It depends on the flux type. If it's water soluble, it should be cleaned soon after reflow because OA flux remains active after reflow. If it's rosin or no-clean (low-residue), then the only concern is the longer wait time, the more difficult it will
Electronics Forum | Thu Jan 03 14:01:24 EST 2008 | fsw
Davef, thnx for your reply. Sorry, forgot to clarify "our normal soldering process". We use standard Sn/Pb & SAC305 for our non RoHS & RoHS requirements. We only have a "No Clean" process, no aqueous flux is used. Hence our flux will be mild. As susp
Electronics Forum | Mon Jul 23 18:38:43 EDT 2001 | johnmaetta
We are re-thinking our clean vs no clean asembly process' and would like some information from users of both process'. Currently, we use no-clean, but our assemblies display residue and other contaminates and this raises questions at our customer si
Electronics Forum | Mon Feb 27 11:06:12 EST 2006 | melby
We are going to start conformal coating PCB assemblies, and I was wondering about cleaning the boards before coating them. Do I need to clean them and if so, with what? We currently us a no clean solder. I am worried about contamination on the board
Electronics Forum | Mon Feb 27 16:37:57 EST 2006 | davef
Options are: * Find a low residue flux and conformal coating material that are compatable, so that cleaning is not required. * Use a cleanable low residue flux, clean according to the supplier's recommendations, and then coat boards.
