When soldering, you usually need to make use of a flux cleaner to develop appropriate joints. There are many types of flux cleaner, and they can be found in pen, liquid, or spray type, in addition to within the solder wire itself.
No-clean fluxes are rather weak, and the residue that they leave will normally not hurt your gadgets. This is why they are called no-clean; the residue it establishes can be left on the board and it will not corrode your parts. If you are applying a conformal completing to your PCB then you will require to wipe the residue from no-clean fluxes so you can ensure even protection.
Slightly Triggered Rosin
Slightly activated rosin fluxes are a bit more effective than No-clean fluxes, however they also typically leave a non-corrosive and non-conductive residue. This flux cleaner varies from manufacturer to maker, so make sure to read the instructions prior to leaving the residue to rest on a delicate aspect. Mildly activated rosin fluxes likewise have a high thermal stability, making sure that preheating does not degrade its solubility.
Activated rosin No-clean fluxes are the next action up from the mildly triggered rosins. The consisted of power in the triggered rosin can eliminate oxides that no-clean and mildly activated fluxes can not. The residue left from triggered rosins might be destructive, so take a look at the data sheet or talk with the maker to see if your particular flux cleaner needs to be cleaned the board after soldering.
Inorganic acid fluxes are also extremely strong, best to help solder hard metals. This can be exceptionally valuable for greatly oxidized metals, or for items that have a low solder capability. Once again, a corrosive residue is left behind, so a warm water or solvent rinse is required to protect your board.
This No-clean flux is made to be rapidly wiped, specifically throughout wave soldering procedures. Water soluble fluxes are a few of the greatest, and will absolutely corrode your PCB if left on, so ensure to completely clean up any residues left by this flux cleaner.