Kester 44 Cored Wire Technical Overview

Kester 44 Cored Wire is an activated rosin-cored solder wire designed for both leaded and lead-free alloy applications, manufactured by Kester. Renowned across the electronics assembly industry for over five decades, this high-activity RA cored wire delivers instant-action wetting and fast-spreading performance for critical electronic manufacturing workflows.

Key Features of Kester 44 Cored Wire

Engineered for speed, consistency, and long-term joint integrity, this activated rosin cored wire offers exceptional technical capabilities:

• High Activity RA Formulation: Provides aggressive fluxing action to dissolve surface oxides rapidly on a wide variety of metallizations.
• Instant-Action Wetting: High flux mobility enables fast solder spread and promotes high-throughput production line soldering.
• IPC ROM1 Classification: Fully classified as ROM1 per IPC J-STD-004 standards.
• Rigorous SIR Performance: Passes both 85 °C / 85% RH and 40 °C / 90% RH Surface Insulation Resistance (SIR) testing criteria despite high chemical activity.
• Alloy Versatility: Suitable for use with both traditional leaded and modern lead-free solder alloys.

Reliability & Performance Considerations

The combination of high flux mobility and proven thermal stability prevents voiding and incomplete joint filling during manual and automated soldering operations. Despite its active rosin classification, post-soldering residue behavior meets stringent IPC reliability tests, preserving circuit board insulation resistance.

Conclusion

In summary, Kester 44 Cored Wire provides instant wetting action, robust mobility, and proven surface insulation resistance. For procurement or technical inquiries, please reach out via Contact – LORIOT INDUSTRIAL.

Technical Specifications