We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
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

  • TypeJF850
  • Size/Dimensions8
  • Item Count12 pack
  • Selling Unit1
  • Conduit & Pipe Size0.8mm 50g
  • Capacity0.8mm 50g
  • 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.

Highlights

  • 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

Specifications

BrandMAIYUM
ModelJF850
TypeJF850
Size/Dimensions8
Item Count12 pack
Selling Unit1
Conduit & Pipe Size0.8mm 50g
Capacity0.8mm 50g
Max Capacity Mild Steel0.8mm 50g
Featuresfalse
Part NumberJF850

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.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.