Water Soluble Flux Vs No Clean Flux

Most high rel people traditionally have used water soluble fluxes because they re stronger fluxes they give a more robust soldering process and they re easier to clean.

Water soluble flux vs no clean flux.

Bittele s use of flux in pcb assembly no clean flux vs. Organic flux is more reactive than rosin activated flux and is thus a stronger cleaner. Water washable and 2. There are several reasons to remove no clean flux residues from pcbs.

Specifically the goal of the flux is to remove any oxides of the metal surfaces that may interfere with the soldering process causing a poor solder joint to form. Water soluble flux the purpose of flux is to help create strong solder joints by first cleaning the metal surfaces. You can also find inorganic water soluble flux which is even more powerful than water soluble flux no clean flux. Water soluble generally uses organic acid activators as the flux and every component in the flux system should be soluble in water and therefore clean with only water.

The fluxes in most of today s no clean pastes contain 50 percent to 70 percent solids. Water washable flux may contain rosin and in addition a surfactant to remove the flux residue after reflow. Because with rosin you need to use some sort of chemistry either a saponifier in a water based system or another solvent. If a company is using a full rosin or water soluble flux in their selective soldering process they are usually.

There are basically two types 1.