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A 100 g spool of 0.8 mm tin-lead rosin-core solder wire on a 55 mm reel

63-37 Tin Lead Rosin Core Solder Wire 0.8mm 100g

SKU CH-G0WN-0ZJNY

63/37 tin-lead rosin-core solder wire, 0.8 mm diameter on a 100 g spool, melts at 183 °C for smooth, strong joints on circuit boards and electrical repairs

  • Fit and compatibility43188-464408, JF8100
  • Certifications and standardsMetal
  • 63/37 tin-lead alloy melts at 183 °C for fast, reliable joints
  • 8 % rosin-core flux cleans surfaces while you solder
  • 8 mm diameter feeds precisely through fine-pitch components
  • 100 g spool fits a pocket or tool bag for field repairs
  • Compatible with part numbers 43188-464408 and JF8100

Tin-Lead Solder Wire 0.8mm 100g

This 63/37 tin-lead rosin-core solder wire comes on a 100g spool with 0.8mm diameter. The flux content is 1.8% and the melting point is 183°C (361°F). It is designed for electrical soldering tasks on circuit boards, cables, and small electronic devices. The spool dimensions are 55mm diameter by 30mm width.

Who This Suits and Who It Does Not

Hobbyists, technicians, and DIYers repairing TVs, radios, toys, or circuit boards will find this diameter and flux level convenient. The low melting point allows fast, smooth flow for strong joints. Buyers who need lead-free alloys for regulatory compliance or larger-diameter wire for heavy-gauge work should look elsewhere.

Alloy Ratio and Melting Point Decide Fit

The fixed 63% tin and 37% lead composition sets the eutectic melting point at 183°C with no plastic range. This single specification determines whether the wire matches the thermal budget and regulatory rules of your application. If your process requires a different alloy or a lead-free standard, this spool will not meet the requirement.

How it compares

Measured against everything we stock in Soldering Irons & Stations, at today’s prices. Recalculated every night.

Price $21.99
Cheaper than about 58% of the 802 comparable items (median $25.99).

Specifications

Compatibility
Fit and compatibility43188-464408, JF8100
Environment & compliance
Certifications and standardsMetal

Questions about this item

What diameter tip should my soldering iron have for this 0.8 mm wire?

Any standard conical or chisel tip will feed the 0.8 mm wire; match the tip to the joint size rather than the wire diameter.

Can I use this 63/37 alloy on boards that were previously soldered with lead-free solder?

Yes, the 63 % tin / 37 % lead wire will wet lead-free joints, though the mixed alloy raises the melting range slightly.

How do I know the flux core is activating properly during a joint?

The 1.8 % rosin core should smoke lightly and leave a clear amber residue that cleans with isopropyl alcohol.

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