Kester Launches NP545 Solder Paste


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Kester is proud to announce the launch of NP545, a zero-halogen, lead-free, no-clean solder paste designed for consistency and repeatability. NP545 is extremely stable and has an unrefrigerated shelf life of 6 months with no print or solderability degradation. Shelf life is 1 year from the date of manufacture when refrigerated. The paste is also fully capable of printing and reflowing 01005 components, even in air reflow, with minimal graping behavior. NP545 is classified as ROL0 per IPC J-STD-004B.

About Kester 

Kester is a global supplier of assembly materials for the Electronic Assembly and Semiconductor Packaging industries. Kester is focused on delivering innovative, robust and high-quality solutions to help our customers address their technological challenges. Kester’s current product portfolio includes soldering attachment materials such as solder paste, soldering chemicals, TSF (tacky solder flux) materials, and metal products such as bar, solid and flux-cored wire. Kester is an Illinois Tool Works (ITW) company. ITW is a Fortune 200 company that produces engineered fasteners and components, equipment and consumable systems, and specialty products. It employs approximately 49,000 people, and is based in Glenview, Illinois, with operations in 57 countries.

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