Solder Wire for Lead Free Assembly
Lead-Free Solder Wire - To promote rapid and complete wetting of the surfaces to be soldered with Lead-Free, a flux system with an effective activator package is essential. Kester solder wires have been tested and proved to give good contact angles and shiny joints when using Lead-Free solders. They are available with all common lead-free alloys.

No-Clean Rosin Activated
| Formula | TK0730 | TK0930 | TK1030 |
|---|---|---|---|
| Product Characteristics | Designed for Lead-Free soldering where fast wetting is required. Provides high solder joints reliability with low flux splatter. | Developed for higher thermal requirements for alternative Lead-Free alloy with prevention of flux splash. Excellent solderability and fast wetting to a variety of surface finishes. Low smoke and low odor. Suitable for robotic soldering. | A newly developed Lead-Free cored wire that provides excellent solderability. Workability enhanced by improving wettability. Successfully lowered flux splattering. |
| Compliant Specifications | JIS-Z-3197 JIS-Z-3283 |
JIS-Z-3197 JIS-Z-3283 IPC ANSI/J-STD-004 Flux designator R0L1 |
JIS-Z-3197 JIS-Z-3283 |
| Residue Removal Method | Not required for most applications. May be removed by solvent such as IPA, acetone, etc | Not required for most applications but may be removed using Kester's #5240, #5252 or #5252M | Not required for most applications. May be removed by solvent such as IPA, acetone, etc |
No-Clean & Water-Soluble Lead-Free Solder Wires
| Formula | No-Clean 275 |
Water Soluble - Organic 331 |
|---|---|---|
| Product Characteristics | Superior wetting performance leaving an extremely clear post-soldering residue. Designed to be a low splattering core flux. | Industry standard water washable core for most electrical and electronic hand soldering. |
| Compliant Specifications | Bellcore Issue 1 GR-78-CORE, IPC ANSI/J-STD-004 Flux designator R0L0 |
IPC ANSI/J-STD-004 Flux designator 0RH1 |
| Residue Removal Method | Not required for most applications. May be removed by solvent or Kester's #5768 Bio-Kleen Saponifier. | Residue removal is required. Use soft or de-ionised water at temperatures of 49°C-65°C (120°F-150°F) |
