Kester Launches NF372-TB Flux-Pen® and RF550 Rework Flux

Kester Launches NF372-TB Flux-Pen® and RF550 Rework Flux

ITASCA, IL, Apr 28, 2016 -- Kester is proud to announce the launch of NF372-TB Flux-Pen® and RF550 Rework Flux. These products were formulated to compliment Kester’s high-reliability, no-clean product line.

NF372-TB Flux-Pen® is a zero-halogen, no-clean, low solids flux available as a Flux-Pen® for rework of conventional and surface mount circuit board assemblies. Kester NF372-TB flux passes IPC SIR testing in a raw or unheated state, ensuring Kester NF372-TB Flux-Pen®s can be safely used in rework applications, specifically those with high reliability requirements. NF372-TB Flux-Pen® residues are minimal, clear and non-tacky for improved cosmetics. NF372-TB Flux-Pen® is classified as ROL0 flux under IPC J-STD-004B. For additional information on this product including technical and safety data sheets, please visit:

RF550 Rework Flux is a high-reliability, zero-halogen, no-clean rework flux designed for electronic component rework and repair applications. RF550 has a gel-like consistency and is packaged in syringes for easy dispensing. RF550 can be precisely dispensed onto specific areas that require flux. After being dispensed, RF550 stays in place until soldering occurs. RF550 has excellent performance in applications requiring high reliability. RF550 is the ideal choice for QFP or BGA semi-auto­mated rework applications, and is well suited for use with through-hole repair. For additional information on this product including technical and safety data sheets, please visit:


Lynnette Colby
Global Product Manager
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Michelle O’Brien
Marketing & Communications Specialist

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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