ALPHA Neutral Flux 373 is a water removable liquid soldering flux used in the mass soldering of printed circuit boards. The organic activating systems in ALPHA neutral fluxes have a neutral pH at room temperature and become activated with elevated temperatures of the soldering process. ALPHA Neutral Flux 373 formulation provides a broad preheat range, low smoke, low odor and does not foam in cleaning systems using soft or deionized water.

Primarily for foam application and conveyorized soldering, ALPHA Neutral Flux 373 can be spray, dip, wave or brush applied. Flux applicators and reservoir should be plastic or titanium only.

Flux coated surfaces should be preheated to provide optimum wicking and solder joint formation. The degree of preheat is dependent on many variables, such as conveyor speed, type of components and substrates. Entering the solder wave with a topside temperature in the 170-200°F range is typical.