Kester® 952-S & SF800-LR Soldering Flux
Zero Halogen, Low-Solid Liquid Fluxes for Tabbing & Stringing Applications- 1. Produce solid interconnects: good conductivity, high peel strength and reliability
- 2. Excellent wetting for high yield and throughput
- 3. Minimal and tack free resides for low equipment maintenance and downtime
- 4. Compatible with different encapsulants
- 5. Wide process window across different cells, equipment and process parameters
- 5.Applicable for dipping or spraying method
PV Fluxes that delivers best-in-class reliability and high throughput Kester 952-S Soldering Flux and Kester SF800-LR Soldering Flux are zero-halogen, non-rosin organic fluxes designed specifically for use in tabber and stringer equipment of photovoltaic assembly (PV) module assembly for soldering tabs to cell contacts. The extremely low solids content (≤ 2%) and nature of the activator system result in cosmetically dry and clean cells as they exit the tabber and stringer machine. This not only maximizes the throughput and yield, but also lowers equipment maintenance time, thereby reducing a manufacturer's total cost of ownership. Both fluxes have a wider operating window varying with temperature range and can be used in SPb, SnAgPb and Pb-free alloys.
Automated Soldering Systems
| Technical Data | Kester 952-S | Kester SF800-LR |
|---|---|---|
| Solid Content | 2.0% | 1.5% |
| Acid Number (mg KOH/gm) | 15.0 | 13.4 |
| Specific Gravity | 0.803 | 0.799 |
| Flux Type, IPC J-STD-004(A) | ORL0 | ORL0 |
| Halide & Halogen Content | None | None |
| SIR, IPC J-STD-004 (A) | Passed | Passed |
Application Process
| Process Control | Kester 952-S | Kester SF800-LR |
|---|---|---|
| Flux Application | Spray, Dip* | Spray*, Dip |
| Preheating Temperature | 100-160 °C | |
| Soldering Method | Contact Soldering, IR, Convection | |
| Soldering Temperature (SnPb) | 200-280 °C | |
*Preferred Method
Location
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