As the electronics is moving towards an environmentally free solutions provider the concept of zero halogen and zero halide have taken shape in the formulation of fluxes.
Fluxes are designed without halogens & halides in their formulation. This reduces the effect of halogens & Halides when the end-of-life components return to waste.
They are extensively used in the solar Photovoltaic industry. They are designed where higher joint strength and lower residues are a requirement.
These are low solid and residues flux hence no cleaning would be required.