• 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

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.

RoHS Compliance

This product meets the requirements of the Restriction of Hazardous Substances (RoHS) Directive.

Flux Application

NF372-TB Flux-Pen is applied to circuit boards via Flux-Pen for rework of printed wire assemblies.

Process Considerations

For best soldering performance, NF372-TB Flux-Pen should only be applied to areas that will be fully heated by the soldering iron or other reflow tool. Care should be taken to avoid flooding the assembly. In cases of over application or incomplete heating, NF372-TB Flux-Pen has passed SIR testing and has not contributed to corrosion.

Cleaning

NF372-TB Flux-Pen residues are non-conductive, non-corrosive and do not require removal in most applications. If residue removal is required, it can be removed using commercially available flux residue cleaner. Contact Kester Technical Support for additional assistance.