HengTianMei 63/37 Rosin Core Solder Wire 0.3mm 50g
Tin-lead rosin-core solder wire with 63/37 alloy, 1.8% flux, 0.3 mm diameter and 183 °C melting point for electronics repair
- Compatibility/FitmentHTMSW63370350
- Standards/CertificationsLead Free Compliant
- 63/37 alloy ratio melts cleanly at 183 °C
- 8 % rosin flux core speeds up solder flow
- 3 mm diameter suits fine-pitch board work
- 50 g spool fits pocket for field repairs
- Sn63-Pb37 composition forms strong joints on radios, motors and circuit boards
Solder wire for fine electronics repair
The 0.3 mm rosin-core wire uses a 63/37 tin-lead alloy with 1.8 % flux. Its melting point is 183 °C, allowing quick joints on small pads. The 50 g spool suits hobbyists and technicians working on radios, circuit boards and similar devices.
Upgrade from thicker or lead-free wire
Thicker gauges can bridge fine-pitch pins, while lead-free alloys need higher tip temperatures. This wire replaces both when precision and lower heat are required. The jump is worth it for dense boards, vintage gear repair or any job where a 0.3 mm diameter gives better control.
Steady flow during long sessions
Flux content stays consistent at 1.8 % so wetting remains even across many joints. The alloy melts cleanly at 183 °C without sudden spikes, reducing tip wear during continuous use. The compact reel feeds smoothly for repeated hand-soldering tasks.
Highlights
- 63/37 alloy ratio melts cleanly at 183 °C
- 8 % rosin flux core speeds up solder flow
- 3 mm diameter suits fine-pitch board work
- 50 g spool fits pocket for field repairs
- Sn63-Pb37 composition forms strong joints on radios, motors and circuit boards
Specifications
| Compatibility/Fitment | HTMSW63370350 |
|---|---|
| Standards/Certifications | Lead Free Compliant |
Questions about this item
What reel diameter and width does the 0.3 mm solder wire come on?
The spool measures 50 mm in diameter and 18 mm wide, which is 1.97 in by 0.7 in.
What temperature should the iron tip reach for this Sn63-Pb37 alloy?
Heat the tip to at least 183 °C (361 °F); the rosin flux activates at that point and the joint flows cleanly.
When will the flux core be exhausted on a 50 g spool?
The 1.8 % rosin core runs the length of the wire; once the 50 g is used up, fresh solder and flux are needed.
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