August 25, 2026 Kester 2235 Flux: High-Activity Organic Flux Solution
Kester 2235 Flux is a high-activity, 11% solids organic flux engineered for automated soldering of circuit board assemblies requiring aggressive surface preparation without sacrificing assembly reliability. Designed with a low solid content relative to other fluxes in its class, it significantly minimizes soldering defects on complex assemblies. To learn more about official joining technologies, visit Kester.
Key Features and Engineering Advantages
Formulated to combine high activation strength with easy post-solder cleanup, Kester 2235 Flux provides several critical operational benefits:
- 11% Solid Content Chemistry: Maintains a lower solid concentration than standard high-activity fluxes, resulting in fewer soldering skips on bottom-side surface mount pads.
- High Activity Level: Delivers robust oxide reduction for challenging component leads and circuit metallizations under automated soldering conditions.
- Superior Ionic Cleanliness: Post-solder residues wash away completely in standard water cleaning systems, yielding ionic cleanliness levels that exceed MIL-P-28809 requirements.
- ORH1 Classification: Formulated as a high-activity organic water-soluble flux for high-reliability industrial standards.
- Safe Operator & Wash Environment: Emits no offensive odors or excessive smoke during heating and resists creating excessive foam in aqueous cleaning equipment.
Assembly Compatibility
The optimized low-solid formulation of Kester 2235 Flux ensures effective surface wetting across dense SMT pad layouts while remaining fully washable in standard inline or batch water wash systems.
Technical Specifications
| Parameter | Specification Details |
|---|---|
| Product Name | Kester 2235 Soldering Flux |
| Flux Classification | ORH1 (High-Activity Organic Water-Soluble) |
| Solids Content | 11% Solids |
| Cleanliness Standard | Exceeds MIL-P-28809 ionic cleanliness requirements |
| Target Process | Automated Wave & SMT Soldering |
| Post-Solder Cleaning | Standard Aqueous / Water Wash Systems |
Conclusion
When automated PCB soldering demands high flux activity with minimal pad skipping and stringent ionic purity, Kester 2235 Flux provides an ideal balance of strength and cleanability. To request technical assistance or pricing, please visit Contact – LORIOT INDUSTRIAL.
