Alpha EF-6000 Soldering Flux is an active, low solids, no-clean flux. It has been designed with a wide thermal process window enabling best-in-class productivity with lead-free wave soldering applications, and is an excellent choice for remaining tin-lead production lines. It is formulated with a proprietary mixture of organic activators. Several proprietary additives are formulated into ALPHA EF-6000 to reduce the surface tension between the solder mask and the solder; thereby, dramatically reducing the tendency of solder ball generation. The formulation of ALPHA EF-6000 is also more thermally stable, thereby, reducing the occurrence of solder bridging during lead-free dual wave soldering.