How To Clean Solder Flux Off Pcb

Using the first tooth brush dipped in brush cleaner gently maybe not too gently scrub the PCB surface all over in a circular motion.

How to clean solder flux off pcb. Trying to use the air nozzle by itself may not be powerful enough to dislodge. We recommend you use a desoldering braid for the purpose. Using a cotton swab or acid brush cut as Pete stated soaked in alcohol helps to break down and remove.

Tried some 70 isopropyl which just kind of left a white flim. After that absolute ethyl alcohol is leveraged for dehydration. Keep the board at an angle as shown in the second photo work from underneath the board that way any liquid will tend to drain off the board and not onto the component side.

3 use the picks for really small places like crystal leads or fine pitch surface mount. 4 rub away what you can with a cotton tipped swab Q-tip etc. 1 cover the area with flux cleaner we use one of the cans 2 scrub with the brush to loosen what you can.

The before is to be sure the pads are clean of any oils or films. Flick away excess by flipping your wrist two or three times. To eliminate PCBA flux residue solder paste solder balls impurities dust oil stain etc.

Then a banister brush is used to brush off contaminants at solder connection in ethanol solution. It is made of mild detergent many people call it surfactant alcohol and thinner material mixture. Do not use too much pressure as this may cause the solder point to break.

No cleans in theory contain lower total solids so as not to need removalcleaning. Worth experimenting with different solder fluxes pastes to find which ones are more readily cleaned off the pcbs. It is much more vital.