Kester TSF-8808 Tacky Flux
Kester TSF-8808 is a synthetic water-soluble tacky soldering flux formula engineered for ultra-fine pitch semiconductor packaging and high-precision electronic assembly. Manufactured by Kester, this advanced flux formulation contains no intentionally added halogens, making it fully compliant with international environmental and halide-free standards.
Key Features of Kester TSF-8808
Formulated to eliminate component movement and simplify post-reflow cleaning, this synthetic tacky flux offers major technical advantages:
- Halide-Free Compliance: Formulated to meet the IEC 61249-2-21 definition for halide-free electronic materials.
- Low Volatile Content: Engineered with low volatile compounds to significantly reduce outgassing and prevent component misalignment during reflow, particularly for ultra-thin flip chip dies.
- Versatile Metallurgy Compatibility: Acts as a direct drop-in replacement across low-melting-point alloys (SnBi), typical tin-lead eutectic, and high-melting-point lead-free alloys (SnAg, SnCu, SnAgCu).
- Cost-Effective DI Water Cleaning: Post-reflow residues are completely soluble in water, allowing clean-up using pure deionized (DI) water without expensive chemical additives.
Applications and Usage
This synthetic water-soluble flux is optimized for critical micro-electronic assembly where post-solder cleanliness and precision alignment are mandatory:
- Ultra-thin flip chip die attach and precision component placement.
- BGA, PGA, and CSP ball attach and rework applications.
- Multi-alloy interconnect soldering requiring pure water-wash residue removal.
Technical Specifications
| Specification Property | Technical Details |
|---|---|
| Product Type | Synthetic Water-Soluble Tacky Flux |
| Halide Standard | IEC 61249-2-21 Halide-Free Compliant |
| Volatatility Profile | Low Volatiles (Reduced Outgassing) |
| Cleaning Agent Required | Deionized (DI) Water (No Additives Needed) |
| Compatible Metallurgies | SnBi, SnPb Eutectic, SnAg, SnCu, SnAgCu |
Conclusion
Utilizing Kester TSF-8808 in your micro-assembly lines minimizes component drift while significantly lowering cleaning costs with simple DI water washing. For technical datasheets, pricing, or product availability, please visit Contact – LORIOT INDUSTRIAL.

