Low-Temp Solder Paste Sn42Bi58 · Type 4
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For heat-sensitive components and LED assemblies.
JST-SPLT-T4 is a low-temperature Sn42Bi58 solder paste that melts at 138 °C — about 80 °C below SAC305. Lower peak reflow temperatures protect heat-sensitive components, reduce board warpage and save energy.
Key features
- Eutectic Sn42Bi58 alloy, melting point 138 °C
- Type 4 powder (20–38 µm)
- ROL0 no-clean flux
- Lead-free and RoHS-compliant
Typical applications
- LED modules and lighting
- Heat-sensitive components and flex circuits
- Step soldering and second-side reflow
Specifications and documents
Full technical data is listed under Additional information. Technical data sheets (TDS) and safety data sheets (SDS) are available on request. Browse all solder paste or contact our engineers for a recommendation, pricing and free samples.
Related guides
| Alloy | Sn42Bi58 |
|---|---|
| Powder size | Type 4 (20–38 µm) |
| Flux | ROL0 · No-Clean |
| Melting point | 138 °C |
| Packaging | 500 g jar |
| Storage | 2–10 °C |
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