- Kester Manufacturing is a leading supplier of solder and solder related products. Solder, solder paste, flux paste, flux pens and more Kester soldering products available at Digi-Key. 

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More about Kester

With over 100 years of manufacturing experience, Kester is a leading global supplier of higher performance interconnecting materials and related services for the electronic and micro-component assembly markets. Kester offers the following solutions:
  • Lead-Free Solutions
  • Solder pastes
  • Bar solders
  • Liquid fluxes
  • Solid and fluxed cored wires
  • Tacky soldering fluxes (TSF)
  • Solderforms®
  • SE-CURE® advanced materials
  • A full spectrum of global customer technical support
Throughout the world, Kester's products are known for their high quality and advanced technology. Kester's ISO-9001 certification ensure Kester's partners of this dedication to quality and environmental responsibility. In addition, our experienced Kester Team is prepared and trained to solve your manufacturing questions across the world. At Kester we believe smart products plus knowledge equals solutions and this is what we offer the electronics assembly industry.

Kester History

The company was founded in 1899 as the Chicago Solder Company to produce flux-cored solder. This patented Kester manufacturing process has had a major impact in the electronics industry to this day. As Kester grew and gained success, the company opened manufacturing facilities in Brantford, Ontario, Canada in 1931 and Anaheim, California in 1959. In 1967, Litton Systems Division of Litton Industries acquired Kester. Kester recognized the importance of being a global supplier in the electronics industry by establishing manufacturing facilities in Singapore (1969) and in Germany (1972) to better service the Asian and European markets, respectively. In 1990, Kester acquired Blackstone Flux. This facility produced and developed products for the automotive heat exchanger and wire/strip tinning markets. In efforts to further extend the product line offering, Kester acquired the assets of two divisions of the Gardiner Metals Company in 1995 - Gardiner Solder and Techform Laboratories. To handle the growing demand in Asia, facilities were opened in Taiwan (1992), and Malaysia (1996).

Kester continued to expand in 1998 by acquiring the IEM electronic solder paste product line from Fusion Incorporated and the assets of Cramco Solder Alloys Limited in Canada. Again in 1999, Kester grew by acquiring Tarutin Co., Ltd. of Japan. In 2001, Kester joined Northrop Grumman's newly established Component Technologies Sector. In 2006, Kester was aquired by Illinois Tool Works (ITW) and is now an Illinois Tool Works Company.

Kester Today

Kester global headquarters operates from a facility located in the Chicago suburb of Itasca, Illinois with additional manufacturing facilities in Mexico, Singapore, Germany, Japan, Taiwan, and Malaysia. Its worldwide manufacturing and technical capabilities provide the support required to serve major electronics manufacturing services providers and OEMs. Kester's multiple global plants and extensive distributor network also assure quick delivery and easy access to Kester products. Kester's global research and development strategy draws upon resources located in the U.S., Singapore, Germany, and Japan. Our R&D chemists are dedicated to advancing soldering technology to meet the needs of a constantly changing and advancing electronics marketplace. Kester continually assesses the needs of the marketplace to determine areas in which research should be performed to develop products and services to better serve specific customer requirements. Whatever our customers' direction, Kester will be there to offer the complete product, process, and support solution.
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