Kester 951 Soldering Flux for Industrial Assembly
The Kester 951 Soldering Flux is a halogen-free, rosin-free, low-solids, alcohol-based no-clean liquid flux engineered to provide superior board cosmetics and eliminate common soldering defects. Featuring an extremely low solids content of just 2.0%, its unique activator system leaves practically no post-solder residue on circuit assemblies. Learn more about the manufacturer on the Macdermidalpha official site.
Kester 951 Soldering Flux Key Features and Performance Benefits
Designed to enhance output quality in wave and automated soldering operations, Kester 951 offers several distinct performance advantages:
- Zero Post-Solder Residue: Low-solids formula ensures printed circuit boards exit wave machines dry, clean, and ready for electrical testing.
- Defect-Free Performance: Delivers improved soldering capability by effectively minimizing solder bridging, icicles, and solder balling.
- High Surface Insulation Resistance (SIR): Offers SIR values significantly higher than typical water-soluble fluxes, ensuring high electrical reliability.
- Built-In Corrosion Protection: Formulated with a specialized corrosion inhibitor to prevent copper corrosion in humid operating environments.
Kester 951 Soldering Flux Technical Specifications
| Parameter | Specification |
|---|---|
| Product Name | Kester 951 |
| Flux Type | Halogen-Free / Rosin-Free / Alcohol-Based No-Clean |
| Solids Content | 2.0% (Low-solids) |
| Defect Prevention | Eliminates solder balling and solder bridging |
| Corrosion Control | Contains built-in copper corrosion inhibitor |
| Residue Characteristics | Dry, cosmetically clean, non-interfering with electrical tests |
Conclusion
Integrating Kester 951 Soldering Flux into your assembly process guarantees clean board cosmetics, high electrical integrity, and minimal defect rates. For technical assistance, pricing, or product availability, please reach out via Contact – LORIOT INDUSTRIAL.

