ALPHA SLS65C
Harmonization Code : 3404.90.00.00 | Artificial waxes and prepared waxes : Other
Main features
- Low-solids, no-clean flux formulated to reduce solder balling and solder bridging in wave and chip-wave soldering.
- Very low level of non-tacky residue supports pin testing while allowing residues to remain on the board without cleaning.
- Supports foam, wave, and spray application methods with documented Bellcore and IPC electrical test performance.
Product Description
ALPHA SLS 65C No-Clean Flux is an active, low-solids liquid flux developed for wave soldering applications where solder balling, solder bridging, and residue can affect assembly quality and inspection. The standard formulation contains 2.2% solids and uses organic activators with additives designed to reduce surface tension between the solder mask and solder. Its thermally stable formulation is designed to reduce solder bridging, while the very low level of non-tacky residue supports pin testing without requiring post-solder cleaning. ALPHA SLS 65C can be applied by foam, wave, or spray methods and carries an ORL0 designation according to IPC J-STD-004.
Key features
- Reduced solder balling and bridging: Formulated to reduce surface tension between solder mask and solder and improve thermal stability during wave soldering.
- Low-solids, no-clean formulation: Contains 2.2% solids with a very low level of non-tacky residue designed to remain on the board without cleaning.
- Flexible flux application: Suitable for foam, wave, and spray application methods.
Applications / Suitable for
- Wave soldering and chip-wave processes
- Assemblies sensitive to solder bridging and solder balling
- Assemblies requiring pin testing with minimal flux residue
TDS, SDS & Technical Documents
Technical Specifications
General Properties
Additional Information
As-supplied / before-processing properties
Selected typical properties of ALPHA SLS 65C in its as-supplied liquid state.
| Property | Value | Unit | Method or condition |
|---|---|---|---|
| Appearance | Clear, colorless liquid | - | As supplied |
| Solids content | 2.2 | wt/wt % | Typical value |
| Acid number | 18 | mg KOH/g | Typical value |
| Specific gravity | 0.799 +/- 0.003 | - | 25 °C (77 °F) |
| pH | 3.4 | - | 5% aqueous solution |
| Flash point | 53 (12) | °F (°C) | TCC |
After-processing / final-state properties
Selected corrosion and electrical test results for ALPHA SLS 65C under the stated test conditions.
| Property | Value | Unit | Method or condition |
|---|---|---|---|
| Surface insulation resistance - Comb-Down | 8.8 x 1012 | ohms | Bellcore GR78-CORE, Issue 1; uncleaned; 35 °C/85% RH, 5 days, -48 V |
| Surface insulation resistance - Comb-Up | 1.4 x 1012 | ohms | Bellcore GR78-CORE, Issue 1; uncleaned; 35 °C/85% RH, 5 days, -48 V |
| IPC SIR - Comb-Down | 5.6 x 109 | ohms | IPC J-STD-004; uncleaned; 85 °C/85% RH, 7 days, -50 V |
| IPC SIR - Comb-Up | 2.3 x 109 | ohms | IPC J-STD-004; uncleaned; 85 °C/85% RH, 7 days, -50 V |
| Electromigration | Pass | - | Bellcore GR78-CORE, Issue 1; uncleaned; 65 °C/85% RH, 500 hours, 10 V |
