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
Spool of silver-grey solder wire 0.8mm diameter 50g

ZSHX Sn99 Ag0.3 Cu0.7 Solder Wire 0.8mm 50g

SKU CH-FD9Q-CY97A

Lead-free solder wire with 99% tin, 0.3% silver and 0.7% copper, 0.8 mm diameter, 2% flux core, 50 g spool

  • Certifications and standardsCircuit board, DIY, Home improvement, Repairation of cable/T
  • Lead-free alloy avoids restricted substances with Sn99 Ag0.3 Cu0.7 composition
  • Low 217 °C melting point speeds up joints and reduces thermal stress
  • 2 % rosin core flux cleans surfaces automatically for reliable electrical connections
  • 8 mm diameter suits fine-pitch board work and general repair tasks
  • 50 g spool provides enough length for multiple projects without excess waste

Lead-Free Solder Wire Sn99 Ag0.3 Cu0.7

This 50gram spool uses a Sn99-Ag0.3-Cu0.7 alloy with a 2% rosin core. The 0.8mm diameter wire melts at 217°C or 422.6°F and is intended for electrical soldering tasks. It suits hobbyists and technicians who need a lead-free option for circuit boards and general repairs.

Suited For Circuit Boards And Small Repairs

The thin 0.8mm gauge works well on dense boards, cables, radios and toys where precision matters. Builders who need larger joints, heavy-gauge wire or plumbing-scale solder should look at thicker diameters. Users who require leaded alloys for specific legacy processes will need a different composition.

Melting Point 217°C / 422.6°F

This single figure determines whether your iron and components can handle the joint. The alloy flows smoothly at this temperature with the included flux. If your equipment cannot reach or control this heat level, the wire will not perform as specified.

How it compares

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

Price $14.99
Cheaper than about 73% of the 802 comparable items (median $25.99).

Specifications

Environment & compliance
Certifications and standardsCircuit board, DIY, Home improvement, Repairation of cable/TV/Radio/VCR/stereos/ Toys, true

Questions about this item

What does the Sn99 Ag0.3 Cu0.7 alloy composition mean for melting point?

The Sn99 Ag0.3 Cu0.7 alloy melts at 217°C (422.6°F), a lower melting point that helps protect sensitive components during soldering.

Will the 0.8mm diameter wire fit my fine-pitch circuit board work?

At 0.8mm (0.0315 inch) diameter with 2% flux core, this wire suits general electrical soldering including circuit boards and small component leads.

How do I avoid cold joints when using this rosin-core solder wire?

Heat the joint — not the wire — until the solder flows smoothly; the 2% rosin core cleans oxidation but only works if the parts reach 217°C first.

More in Soldering Irons & Stations

Similar items