How To Clean Solder Flux

How to Remove Solder Soldering.

How to clean solder flux. After applying the remover leave it for few seconds and then brush it away. To remove any kind of flux you need to apply a lot of removers. Then use a gentle scrubber or a cotton swab to wipe it away.

What it leaves behind can keep you circuit from working. Flick away excess by flipping your wrist two or three times. Solder flux residue can be removed in two steps.

Using baking soda and dish soap is an alternative for commercial flux removers. In case of fluxes that need cleaning after soldering solvent cleaning or aqueous cleaners can be used. Wipe of the excess flux from the soldered joint with a piece of paper towel.

Wipe any excess flux off your fingers or brush before soldering. Some pens like the Kester 2332-ZX are excellent at getting the solder to flow and make very nice joints. If there is any chance of flux-contaminated solvent wicking into these areas flush.

Following the reflow process the flux leaves a small amount of residue around the various solder joints. The fluxes in most of todays no clean pastes contain up to 60 percent solids. While this may be adequate for no-clean flux where the goal is a visually clean PCB this may not be clean enough when more heavily activated fluxes are involved like RA or aqueous.

1 Dip a clean toothbrush in isopropyl alcohol or acetone. Discard the wipe and use a new one when there is a high amount of flux residue on it. Soldering Flux Cleaning.