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Nihon Superior’s SN100C Wets and Spreads Faster than SAC305

Sep 01, 2010

OSAKA, JAPAN - Nihon Superior Co. Ltd., a supplier of advanced soldering materials to the global market, announces that SN100C wets and spreads faster than SAC305.

An evaluation of solder wettability and spreadability was conducted with lead-free flux cored solder wire of SN100C and SAC305 alloys on stranded wire used for speakers. SAC305 has a lower melting point; however, SN100C’s superior wettability and spreadability after melting was proven over SAC305.

Generally, wettability is evaluated with zero-cross time using the wetting balance test (JIS Z 3198 or IPC J-STD-003). However, it is recommended that the performance of wetting and spreading of solder onto a base material be verified after melting, such as in this evaluation. The total wetting time appears to be a more realistic indication of true wetting and spreadability of a solder.

For more information or to view the results of the evaluation, visit

Nihon Superior was founded in 1966 when it began marketing unique flux products imported from the US. The company made its mark on society by gathering the most advanced soldering and brazing technologies and products from around the world, and supplying them to companies in the metal-joining industry. A turning point for the company came when it started developing its own soldering materials and with the success of its unique SN100C lead-free solder alloy Nihon Superior has become a major player in the global market. To support the growing demand for its products Nihon Superior has established manufacturing and sales centers in Japan, China and other Asian countries and formed business partnerships with companies in other markets.

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