63-37 Tin Lead Rosin Core Solder Wire Sn63-Pb37 Soldering 0.8mm 100g
Rosin-core solder wire with a 63% tin and 37% lead alloy melts at 183°C for reliable electrical joints
- Compatibility/FitmentPX-1006337
- Standards/CertificationsTIN
- Sn63-Pb37 alloy gives consistent electrical joints
- 2 % flux cleans surfaces while you solder
- 8 mm diameter feeds easily through fine tips
- 183 °C melting point speeds up rework tasks
- 100 g spool lasts through many board repairs
Composition and form
This 100g spool contains Sn63-Pb37 alloy solder wire with a 2.2% rosin flux core. The 0.8mm diameter suits fine-pitch work on printed circuit boards and small electrical terminals. It melts at 183°C (361°F) for quick joint formation.
Best suited for electronics repair
Technicians and hobbyists who need reliable joints on through-hole boards, home audio gear or automotive wiring will find this alloy effective. Buyers who require lead-free formulations for regulatory compliance or who need thicker wire for heavy-gauge cables should consider other options.
Alloy ratio determines melting point
The fixed 63% tin and 37% lead composition sets the eutectic melting point at 183°C, giving a narrow plastic range that reduces cold-solder defects. This single specification decides whether the wire meets your process requirements.
Highlights
- Sn63-Pb37 alloy gives consistent electrical joints
- 2 % flux cleans surfaces while you solder
- 8 mm diameter feeds easily through fine tips
- 183 °C melting point speeds up rework tasks
- 100 g spool lasts through many board repairs
Specifications
| Compatibility/Fitment | PX-1006337 |
|---|---|
| Standards/Certifications | TIN |
Questions about this item
How do I install the 0.8mm Sn63-Pb37 solder wire, and what step do people get wrong?
Feed the 0.8mm wire onto a spool holder or keep the coil loose; the common error is bending the wire sharply at the tip, which causes kinks that jam the feed.
What maintenance or replacement will this 100g roll of 2.2% flux-core solder need later?
The rosin flux burns off during each joint; when residue builds up on the tip, clean it with a brass sponge and re-tin — the wire itself is consumed and replaced when the 100g roll runs out.
What limit appears first during sustained soldering with this Sn63-Pb37 alloy?
The eutectic alloy melts at 183°C; if the iron idles much hotter the 2.2% flux core chars and the tip oxidises faster, so temperature control is the practical limit.
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