Electronics Forum | Mon Apr 23 14:05:07 EDT 2007 | Cmiller
Dave, we have the same issue running a new bare board through the oven with no paste. If there is an imcompatibility with our flux would it still manifest itself when there is not flux? Im sure there is some residual flux in the oven all the time. We
Electronics Forum | Wed May 27 15:09:30 EDT 1998 | Dave F
| | | | We recently made the switch to no-clean and the wurface mount is turning out beautifully. However, the wave solder process continues to put up a fight; we are getting a white residue on the surface of the PCB. The residue is not locali
Electronics Forum | Fri Jun 14 14:19:17 EDT 2002 | davef
Consider: * 007 is a no-clean flux. Some no-cleans you can clean, some you can�t. You may be able to use a saponifier & surficant to clean the residue. Check with your flux supplier for recommendations. * 320�C is higher than the 315�C peak for th
Electronics Forum | Sun Jul 29 09:22:54 EDT 2001 | davef
Tough to say. The residues from fluxes vary according to the suppliers' forulations. Consider: * Talking to your supplier. * Running life cycle tests.
Electronics Forum | Tue Mar 04 01:51:52 EST 2008 | lococost
An industry issue??? Sounds more like another ROHS issue to me. Experience tells us the LF flux leave much more residue inside the oven
Electronics Forum | Tue Apr 05 16:19:08 EDT 2022 | emeto
Datasheet says that post solder cleaning is required.I assume this will completely go away after cleaning. Water based water soluble fluxes often leave nasty residues.
Electronics Forum | Thu Apr 14 13:10:49 EDT 2005 | Shean Dalton
Hi John, A primary consideration is the type of flux you are using. If it's water soluble (organic acid) then cleaning is highly recommended. Any other flux that fails the copper mirror test, we'd strongly recommend cleaning. Passing the copper m
Electronics Forum | Sat May 31 09:44:56 EDT 2008 | gregoryyork
looks like the board has gone through and not actually fluxed properly,trying hand applying and it should fix it. IF it still occurs put the pallet through without pcb and without flux and see what residues come off in the wave. residues you are seei
Electronics Forum | Fri Sep 09 15:53:22 EDT 2005 | patrickbruneel
If the white residue is from a no-clean flux or no- clean solder flux core you can leave it on the board. (Consult with the flux or cored solder manufacturer) Because after being encapsulated with conformal coating the residue is sealed from humidity
Electronics Forum | Mon Aug 19 04:48:27 EDT 2002 | surachai
I'm not found this problem with adhesive but found in NC flux , Then you should get some residue and analyse it by SEM and EDX for specify the actual source ( flux or adhesive ? ) , if it 's from adhesive , sometime your supplier must join this pro
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