MECHANIC V5B45 Lead‑Free Solder Paste (42 g)
The MECHANIC V5B45 Lead‑Free Solder Paste (42 g) is a premium low-temperature paste engineered specifically for precision electronics rework and delicate component operations.
Made from Sn42Bi58 alloy, it melts at just 138 °C, significantly lower than standard solders — ideal for heat-sensitive components like BGA chips, power ICs, and CPU BGA balls. The built‑in flux formula enhances wetting and solder flow, eliminating the need for additional cleaning while delivering bright, reliable joints .
The user-friendly 42 g syringe tube ensures precise application, reducing mess and waste in both professional repair labs and hobbyist benches.
🛠 Technical Details
| Parameter | Specification |
|---|---|
| Alloy Composition | Sn42 Bi58 (42% Tin, 58% Bismuth) |
| Melting Point | 138 °C (low-temp) |
| Flux Type | Pre-mixed paste, IPX4 rating |
| Grain Size (Micron) | ~25–45 µm |
| Net Weight | 42 g syringe |
| Lead Content | Lead-free |
| Ideal For | BGA reballing, CPU/GPU, SMT rework |
⚠️ Precautions & Safety Tips
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Use with a temperature-controlled hot-air or soldering station of 150–200 °C.
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Work in a well-ventilated area; use fume extraction to manage flux fumes.
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Avoid prolonged heating — Bi-rich alloys are brittle above 150 °C.
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Store sealed at room temperature to maintain freshness.
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Do not ingest; avoid contact with eyes or skin.
💡 Use Cases & Applications
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Low-Temp BGA & CPU Reballing
Ideal for reballing and replacing heat-sensitive ICs without risking PCB delamination. -
Fine SMT Rework
Excellent for repairing electronics components and IoT modules with reduced thermal stress. -
Smartphone/Mobile Device Repair
Enables safe rework of phone chips and hardware with minimal heat exposure. -
Embedded Systems Maintenance
Useful for servicing embedded boards with delicate sensors, connectors, or memory modules. -
STEM / Advanced Repair Workshops
Great for teaching low-temp reflow techniques and hands-on component repair.
🛠️ Pair With
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Drones — e.g. TV modules and FPV gear
🎥 YouTube Tutorial
🏁 Conclusion & Value Proposition
If you need a reliable, lead-free, and low-temperature solution for heat-sensitive rework, the MECHANIC V5B45 (42 g) is the professional’s choice. Save time, protect your PCBs, and ensure consistent results — available now at Electroway.
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