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Twelve spools of 63/37 tin-lead solder wire, 0.8 mm diameter, 50 g each, on 55 mm reels

MAIYUM JF850 63/37 0.8mm 50g solder wire 12 pack

SKU CH-EWFM-QVR95 MPN JF850

Twelve spools of 63/37 tin-lead rosin-core solder wire, each 0.8 mm diameter and 50 g, melt at 183 °C for circuit-board and general electrical repairs

  • Total capacity0.8 mm 50g
  • Conduit & pipe size0.8 mm 50g
  • Maximum capacity mild steel0.8 mm 50g
  • Product typeJF850
  • Size or dimensions8
  • Number of items12 pack
  • 63/37 tin-lead alloy melts at 183 °C for fast joints
  • 8 % rosin core flux cleans surfaces while you solder
  • 8 mm diameter suits fine circuit-board work
  • 50 g spool fits in a pocket for field repairs
  • 12 spools per pack keep a workshop stocked

63/37 Tin-Lead Solder Wire 12 Pack

This 12-pack supplies 0.8 mm diameter solder wire on 50 g spools for electrical soldering tasks. The rosin-core alloy contains 63 % tin and 37 % lead with a flux content of 1.8 %. It suits circuit-board work, cable repairs, DIY projects and general electronics assembly.

183 °C Melting Point Alloy

The wire melts at 183 °C (361 °F), allowing fast flow and strong joints without excessive heat. Low melting temperature reduces risk to heat-sensitive components while still producing reliable connections on copper pads and through-hole leads.

Flux-Core Reduces Extra Flux Need

Integrated rosin flux cleans oxidation during soldering so separate flux application is often unnecessary. Each spool measures 55 mm diameter by 30 mm width and weighs 50 g gross, making it compact for bench storage or pocket carry. Remember to wash hands after use due to lead content.

How it compares

Measured against everything we stock in Electrical Trade Tools & Kits, at today’s prices. Recalculated every night.

Price $14.99
Cheaper than about 93% of the 5,006 comparable items (median $95.99).

Specifications

Product
Brand nameMAIYUM
Model nameJF850
Part numberJF850
Total capacity0.8 mm 50g
Product typeJF850
Size & build
Size or dimensions8
Conduit & pipe size0.8 mm 50g
In the box
Number of items12 pack
More details
Maximum capacity mild steel0.8 mm 50g

Questions about this item

What does the 63/37 tin-lead ratio mean when I use this solder on a circuit board?

The 63/37 alloy is eutectic, so it melts and solidifies at a single temperature of 183 °C without a pasty range, giving sharp, reliable joints on PCBs.

How does the 1.8 % rosin flux core affect the joints I make with this 0.8 mm wire?

The 1.8 % flux cleans oxidation as the wire melts at 183 °C, letting solder flow smoothly into fine-pitch pads without separate flux application.

Will the 55 mm diameter spools fit on my benchtop solder station holder?

Each spool measures 55 mm in diameter and 30 mm wide, a common size that fits most standard benchtop wire dispensers.

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