No Clean Solder/WS Flux

Subscribe to Thread

Hello everyone. Can someone please tell me if there are prob... - Oct 23, 2002 by Peterson

The big problem we saw was the appearance of the solder join... - Oct 24, 2002 by Kevin Facinelli

Hi, No clean mean is no need to clean. Of couse if you us... - Oct 25, 2002 by KC

Good Morning, I think that the use of No clean at SMT and... - Oct 28, 2002 by Christopher Lampron

from my experience, no clean mean "difficult and cannot clea... - Oct 29, 2002 by peterpaulmary

Peterson

#22122

No Clean Solder/WS Flux | 23 October, 2002

Hello everyone. Can someone please tell me if there are problems using No Clean solder for SMT and then using WS Flux with our Wave process? We are aquaeous cleaning after...but are there other cross-contamination issues? THANKS!!!

reply »

Kevin Facinelli

#22144

No Clean Solder/WS Flux | 24 October, 2002

The big problem we saw was the appearance of the solder joint after the water wash process. We saw the joints turn white through the absorption of moisture. Looked real bad but still functioned. I would stick with using only one of the processes and not mixing. I am a strong proponent of the W/S solder paste and fluxes....

No Clean means no clean...or at the least very, very hard to clean in my experience.

Good luck,

Kevin

reply »

#22147

No Clean Solder/WS Flux | 25 October, 2002

Hi,

No clean mean is no need to clean. Of couse if you usin incompatibility solvent to clean, the white residue will appear. If cleaning is needed, source the suitable solvent and this always suggested by your solder paste supplier.

regards

reply »

Christopher Lampron

#22164

No Clean Solder/WS Flux | 28 October, 2002

Good Morning,

I think that the use of No clean at SMT and the use of WS at wave is counter productive. For the most part, you will get better results using WS at SMT. If you use No Clean, and then are forced to run this thought a water wash as a requirement of the WS at wave, you will discolor the No clean flux left from the SMT process. The residues are usually harmless but an eyesore. There are some No clean formulas that are water washable and will not leave a discolored residue but at this point, I do not see why you wouldn't use a WS.

Hope this helps

Christopher Lampron

reply »

peterpaulmary

#22169

No Clean Solder/WS Flux | 29 October, 2002

from my experience, no clean mean "difficult and cannot clean"

Normally, you will observe white residue when cleaning it.

You should study the flux in the no-clean solder cream before cleaning it.

Or change no clean solder to clean type solder

reply »