History

• 1938: Founded as Senju Lead Works Co., Ltd. (Senju Lead Works).
• 1939: Started production of wire solder, solder bar, resin flux-cored solder and lead water pipes.
• 1944: The company name was changed to Senju Metal Industry Co., Ltd.
• 1956: Acquired soldering and marking qualifications in accordance with JIS (Head Office).
• 1963: Successful domestic production of sprinkler heads for firefighting.
• 1966: Established a factory in Moka City, Tochigi, Japan.
• 1977: Developed silver-cored solder balls.
• 1979: Developed oil-free Clean Metal bearings.
• 1980: Finalized development of the first fully automatic soldering machine.
• 1982: Finalized development of the first reflow oven.
• 1985: Began exporting solder production equipment to China and entered into technical partnerships with Chinese manufacturers.
• 1990: Established production and sales bases in Malaysia. Newly established Iwate Plant (Senju Sprinkler Co., Ltd.).
• 1997: Established Senju Comtek Corp. in California, USA.
• 2001: Began selling lead-free solder material M705, which became JEITA standard.
• 2002: Began full-scale production in Huizhou, China.
• 2004: Established SENJU METAL (THAILAND) CO., LTD.
• 2005: Completed the new headquarters building.
• 2006: Established SENJU KOREA CO., LTD.
• 2012: Construction of the new research building Nissin Lou near the headquarters was completed.
• 2014: Acquired official membership in EICC and CFSI.
• 2015: Announced full abolition of conflict minerals and began selling LEO, the world’s first Sn–Bi series and flux-cored solder.
• 2017: SENJU MANUFACTURING EUROPE S.R.O. began operations in the Czech Republic.

This historical development shows SMIC’s focus on solder materials, FA equipment and processing technologies as well as global expansion and CSR initiatives.

Production / Manufacturing

• SMIC's core business consists of solder materials, FA equipment and sliding bearings as main areas, and the company works on developing advanced solutions in areas such as semiconductors, electronic components, electrical and electronic devices, industrial equipment, building machinery and the automotive industry.
• Product areas include: lead-free solder materials, ECOSOLDER, flux-cored solder and various types of soldering fluxes, as well as FA equipment such as reflow ovens and spray fluxers.
• Other mentioned business areas include bearings (sliding bearings) and sprinkler-related activities through subsidiaries.

Products

Lead-Free Solder (ECOSOLDER)

• The ECOSOLDER range includes many alloys such as M705 (Sn-3.0Ag-0.5Cu), M31 (Sn-3.5Ag-0.75Cu), M714 (Sn-3.8Ag-0.7Cu), M715 (Sn-3.9Ag-0.6Cu), M710 (Sn-4.0Ag-0.5Cu), M771 (Sn-1.0Ag-0.7Cu) and others.
• There are also low-Ag content / Ag-free solutions such as M35 (Sn-0.3Ag-0.7Cu), M20 (Sn-0.75Cu) and M24MT/M24AP (Sn-0.7Cu-Ni-P-Ge and Sn-0.6Cu-Ni-P-Ge).
• In addition, high-reliability variants are offered for power semiconductors (e.g., M10, M14, M754, M709, M760HT, etc.).

Flux for flux (flux variants)

• Economical and quality-focused flux materials include categories such as post flux and semiconductor flux.

Flux for cored solder (cored flux)

• Products under “Sparkle Solder” include RMA98 SUPER (Sn60%), Sparkle TSURU22 (Sn60%), Sparkle EX (Sn60%) and HARX M (Sn60%).

Reflow FA equipment

• The reflow ovens include the SNR-GT series (through-flow and upgraded models), SNR-GT-W (non-stop, dual-chamber), SNR-GT-H (420°C profile), SNR-MB (bump-forming), SVR series (ventilation and nitrogen-atmosphere) and SAR-825GT (air-based).

Spray Fluxers (SSF2 series)

• SSF2-400 and SSF2-500 with detailed dimensions and specifications included (conveyor belt, heights, speeds, pressures, etc.).

Solder / cored flux products

• SPARKLE and related flux solutions for the core of solder production, including RMA98 SUPER, TSURU22, EX and HARX M.

Visits and Experiences

• The company operates through a global network with headquarters in Japan and offices/facilities in various regions.
• Japan: Headquarters in Tokyo, as well as offices/facilities in Kitakami, Sendai, Koriyama, Tochigi, Soka, Toyama, Matsumoto, Seto, Kusatsu, Nishiwaki, Himeji and Fukuoka.
• Europe: Senju Metal Europe GmbH (Frankfurt), Schwabach, Madrid, Prague and Senju Manufacturing Europe (Prague).
• Americas: Senju America Inc. (Wheeling, IL), Senju Comtek Corp. (Santa Clara, Mundelein and Oak Ridge), Guadalajara.
• Asia: Malaysia, Thailand, the Philippines, China, Taiwan, Hong Kong offices and factories, including Tianjin, Shanghai, Suzhou, Huizhou, and others.

Philosophy

• SMIC's management philosophy rests on three pillars: Ability, Integrity, and Fighting Spirit. The aim is to deliver excellent products through innovative technology and to meet society's needs in environmental protection, resource prioritization, climate change and safety.
• The company focuses on research and development as well as risk management to prepare for earthquakes and other future challenges. CSR activities and supply chain transparency are emphasized, including information on mineral sources and the chemicals used.