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Alpha WS362 series of halide-free, water soluble, organic fluxes is designed for the soldering of surface mount and mixed technology assemblies, where the effective cleaning of residues becomes most critical. The densely-packed assemblies, associated with today's mixed technology boards, adds a difficulty to cleaning which makes the older technology water soluble fluxes non-optimal for applications requiring high ionic cleanliness. Alpha WS362-25 is recommended where maximum flux activity and solids are required, such as the soldering of assemblies with very dense component packing and with multilayer boards requiring relatively high preheat temperatures. After soldering, flux residues are highly water soluble and can be readily removed. This results in assemblies with the highest degree of ionic cleanliness and high surface insulation resistance. Most cleanable water soluble flux. Highest ionic cleanliness and surface insulation resistance. Halide-Free. Maximum electrical integrity. Good activity with rapid wetting. Defect-free soldering. Easily soluble in cold water. Applied by foam, spray or wave techniques. 3.2 pH in 5% Aqueous Solution. Application: For the Soldering of Surface Mount and Mixed Technology Assemblies, Where the Effective Cleaning of Residues Becomes Most Critical