Nearly 20 years ago in Japan, Senju introduced ECO Solder as one of the industry's first environmentally-friendly Lead-Free products and by 2000 the Japan Electronics and Information Technology Industries Association (JEITA) recommended use of the Sn/Ag3.0/Cu0.5 alloy for Lead-Free applications. With the introduction of the EU's RoHS legislation in 2006, the Sn/Ag/Cu or "SAC" alloy family quickly became the global industry standard. Most alloys selected contained between 3.0 to 4.0% silver for the best soldering performance.

Flux Cored Solder



Since SMIC developed its flux core solder SPARKLE SOLDER in 1955 in Japan, we have developed a number of flux core solders for various alloys and applications.
For our ECO SOLDER alloy, SMIC developed a type of flux core solder with improved wettability, a drawback peculiar to Lead-Free solder

Flux chemically removes oxide film from the metal surface to be soldered, thereby exposing the solderable metal surfaces. Flux is therefore indispensable in all soldering processes, including soldering of PC boards and special metals. It requires high reliability and soldering properties that match the application. SMIC has long experience in developing various types of flux, including PC board flux, all of which provide unrivaled performance.