Water Soluble Flux Vs No Clean Flux

There are several reasons to remove no clean flux residues from pcbs.

Water soluble flux vs no clean flux.

Bittele s use of flux in pcb assembly no clean flux vs. Water washable and 2. Because with rosin you need to use some sort of chemistry either a saponifier in a water based system or another solvent. Water soluble fluxes when discussing fluxes for the selective soldering process we are generally referring to low solids no clean fluxes and it is the most commonly used flux type in selective soldering.

If a company is using a full rosin or water soluble flux in their selective soldering process they are usually. In terms of leaving a clean appearance no clean solder pastes are as good as any of the water soluble solder pastes says dixon. 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. The fluxes in most of today s no clean pastes contain 50 percent to 70 percent solids.

Organic flux is more reactive than rosin activated flux and is thus a stronger cleaner. No clean flux is a mixture of organic resins aside from rosin mixed with certain inorganic agents. Water washable flux may contain rosin and in addition a surfactant to remove the flux residue after reflow. 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.