Assembling a printed circuit board is a complicated
process, and it requires a lot of precision and patience. How good a solder
joint turns out to be depends significantly on how well the preceding methods
have been tackled, for example, fluxing. Fluxing is done to remove impurities
from the surface of the printed circuit board, making it possible to achieve a
homogeneous bond. The most important property of flux, thus, would be the
wetting it achieves on the board. Here is what makes liquid solder a perfect
choice for electrical assemblies.
Liquid solder is nothing but solder with liquid
flux. The reason why liquid solder flux is so significant in electronics applications
is that it can reach every space and corner on a circuit board and wet it. This
ensures efficient cleaning before actual soldering can begin. Liquid solder
fluxes are less active than most pasty fluxes, which assures that the
components on your printed circuit board do not experience corrosion.
Liquid fluxes are usually water-based, but there are
some alcohol-based liquid fluxes available in the market too that work on the
principle of no-cleaning. These fluxes do not need to be cleaned after application
because they leave very little or no residue.
Liquid soldering fluxes have enabled high heat processes to touch new
heights in soldering. Many other fluxes burn in high temperatures, ultimately
leading to failures in soldering – this issue can be tackled by using liquid
soldering fluxes. Liquid soldering fluxes also enable high precision jobs where
small components are to be wetted perfectly and evenly.
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