Fine Soldering Wire 63/37
For applications that demand precision, consistency, and reliability, the Fine Soldering Wire 63/37, Flux 2.0%, Diameter 0.7 mm (100 g) is the ideal choice.
This eutectic alloy solder wire has a sharp melting point (~183 °C), making it perfectly suited for fine-pitch component soldering and high-speed production environments. The 2.0% activated rosin flux core ensures excellent wetting and helps form clean, strong solder joints even on oxidized surfaces.
The 0.7 mm diameter gives you precise control — ideal for SMD work, wire-to-board connections, and delicate rework operations.
Its compact 100 g spool is great for bench technicians, makers, and prototyping labs that require quality over quantity.
👉 See detailed technical specifications below:
🛠 Technical Details
| Parameter | Specification |
|---|---|
| Alloy Composition | Tin 63% / Lead 37% (Eutectic Alloy) |
| Flux Content | 2.0% Activated Rosin Core |
| Melting Point | ~183 °C (eutectic) |
| Diameter | 0.7 mm |
| Net Weight | 100 g spool |
| Wetting Performance | Excellent |
| Post-Soldering Cleanup | Low residue; cleaning optional |
| Suitable for | SMD, through-hole, wire, precision soldering |
⚠️ Precautions & Safety Tips
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Use a temperature-controlled soldering iron between 340–380 °C for optimal performance.
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Always work in a well-ventilated environment to minimize exposure to flux vapors.
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Wear appropriate eye protection and wash hands after handling.
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Keep the workbench ESD safe when working on sensitive circuits like IoT modules or MCUs.
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Store solder wire in a dry, sealed container to prevent oxidation.
💡 Use Cases & Applications
The Fine Soldering Wire 63/37 (0.7 mm, 100 g) is highly suitable for both professional and DIY applications:
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Professional PCB Assembly & Repair
Ideal for precision work on densely populated boards and rework of SMD components. -
IoT & Smart Devices
Trusted for building and repairing IoT modules and sensor arrays. -
Raspberry Pi & Single-Board Computers
Suitable for assembling Raspberry Pi accessories and extensions. -
Drone Electronics
Used in assembling drone ESCs, FPV systems, flight controllers, and power distribution boards. -
STEM Labs & Educational Projects
Perfect for use in STEM workshops, university labs, and technical training environments. -
DIY Electronics & Prototyping
A go-to choice for makers crafting wearable electronics, robotics, and automated systems.
🛠️ Pair With
🎥 YouTube Insight
Watch this expert tutorial on fine-pitch soldering techniques using eutectic solder wire.
🏁 Conclusion & Value Proposition
The Fine Soldering Wire 63/37 (0.7 mm, 100 g) combines excellent flow, clean joints, and precise control — making it the perfect solution for both advanced electronics production and hobbyist builds.
Whether you’re assembling a commercial IoT device or crafting your next Raspberry Pi project, this wire delivers professional results.
Available now at Electroway — stock up today and enhance your soldering toolkit!
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