• Zero-halogen (none intentionally added)
• Provides good solderability under air atmosphere
• Classified as ROL0 per J-STD-004B
• Pass SIR in raw state (unheated boards dried at 25 °C/50%RH for 24 hours before test)
• Non-corrosive, non-conductive and non-tacky residues
• Compliant to GR-78-CORE (Telcordia/Bellcore)

Kester 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. NF372-TB flux passes IPC SIR testing in a raw or unheated state, ensuring NF372-TB Flux-Pens 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.