Electronics Forum | Thu Mar 02 23:09:20 EST 2006 | praveen39
We need to clean the RMA flux residue on the PCBAs. The PCBA material is ALuminum base(Gold finish)stacked with Rogers Material PCB.Any solvent recommnedtaions? Is HCFC 141b a good solvent (quality & Price). we need to use vapor degreaser and also do
Electronics Forum | Mon Nov 14 01:46:12 EST 2011 | julien
We already have contact with Zestron and we try several chemicals and process (Immersion, aspersion, vapor degreasing). And we always find something under low standoff component. Concerning the flow pressure and shadowing, we try different position
Electronics Forum | Mon Aug 31 12:27:08 EDT 2020 | dontfeedphils
I guess my question would be why are you getting so much/leaving so much flux on the boards during the select solder process? With a drop-jet fluxer you should be able to apply the flux very selectively and leave a fairly clean looking PCBA, assumin
Electronics Forum | Mon Aug 31 12:44:21 EDT 2020 | kylehunter
We are using a spray fluxer. Most of the THT parts are long connectors, so we spray along the length of the connector. I'm sure we can tune it a bit to reduce the amount of flux some. We're still going to need to remove the flux for some of our clien
Electronics Forum | Tue Sep 01 16:47:25 EDT 2020 | charliedci
The problem that we have seen applying NC flux (EF2210) at selective solder is that the flux overspray (relative to the nozzle path) did not see high enough temperature to activate the flux and turn it to a non-conductive, benign residue as one would
Electronics Forum | Wed May 16 08:48:12 EDT 2001 | ohboy
I been a bunch o' places...! Some good, some bad, re-inventing the wheel in many cases. Our specs are pretty specific in a lot of cases, but that doesn't mean they always get followed. It usually becomes a case of "It's not quite right, but we rea
Electronics Forum | Wed Sep 05 14:53:45 EDT 2001 | Jeff Meier
We have customers that are requiring no flux residue left on boards after soldering of non-water washable parts. We currently use Multicore Crystal 502 No-Clean to solder parts that are not washable. Has anyone come up with a good way to remove this
Electronics Forum | Wed Jun 04 13:40:41 EDT 2003 | caldon
You may have answered your own question. CHEMISTRY, CHEMISTRY, CHEMISTRY depending on what type and whos product will work differently for each machine and Board geometry. I would ask Kyzen, Pertoferm, Zestron, and Aqueous Tech (all Chemistry manuf
Electronics Forum | Fri Jun 24 15:04:22 EDT 2011 | kahrpr
I am going to open the flood gates of comments. The purpose of no clean is so you do not have to clean it. Yes I am aware of no cleans that you can clean. If you need to clean the boards use a water soluble paste. If you do not clean, no clean prop
Electronics Forum | Mon Aug 22 13:50:21 EDT 2011 | ryanr
I am looking for a methods to clean boards built with a "No-Clean" flux but the boards have non-hermetically sealed parts on them, therefore they cannot be exposed to an semi-aqueous process (what I typically use). These boards will be built in large
