Lead Free Solder Wire 1.2mm 50g Rosin Flux Core Sn99 Ag0.3 Cu0.7
Lead-free 1.2 mm solder wire with 2.5 % rosin flux core, Sn99 Ag0.3 Cu0.7 alloy on a 50 g spool
- Compatibility/FitmentOut-Opening, Narrow Stile, Store Front Doors
- Standards/CertificationsLead Free Compliant
- Lead-free Sn99 Ag0.3 Cu0.7 alloy meets RoHS compliance
- 2 mm diameter suits fine-pitch components and connectors
- 5 % rosin flux core removes the need for separate flux
- 50 g spool provides consistent melting point for reliable joints
- Suitable for engineering, hobbyist and professional repair work
Lead-Free Solder Wire 1.2mm
This 1.2mm lead-free solder wire uses a Sn99 Ag0.3 Cu0.7 alloy that meets RoHS requirements. It is supplied on a 50g spool and targets electronics assembly, repair work and hobbyist projects. The built-in rosin flux core removes the need for separate flux application during soldering tasks.
Sustained Soldering Behaviour
The rosin flux core measures 2.5% and promotes consistent wetting across repeated joints without extra flux. Lead-free composition means flowability is slightly lower than lead-based alternatives, so joints may need a little more dwell time under the iron. Uniform melting point control on each spool helps maintain repeatable results during longer sessions.
Alloy and Flux Constraints
The Sn99 Ag0.3 Cu0.7 alloy complies with lead-free standards but does not match the fluidity of traditional tin-lead solders. Rosin core content is fixed at 2.5%, limiting suitability for heavily oxidised surfaces that demand aggressive flux. Diameter is set at 1.2mm, which restricts use on very fine-pitch components needing thinner wire.
Highlights
- Lead-free Sn99 Ag0.3 Cu0.7 alloy meets RoHS compliance
- 2 mm diameter suits fine-pitch components and connectors
- 5 % rosin flux core removes the need for separate flux
- 50 g spool provides consistent melting point for reliable joints
- Suitable for engineering, hobbyist and professional repair work
Specifications
| Compatibility/Fitment | Out-Opening, Narrow Stile, Store Front Doors |
|---|---|
| Standards/Certifications | Lead Free Compliant |
Questions about this item
Does the 1.2 mm diameter wire generate fumes that require extra ventilation during long soldering sessions?
The wire is lead-free and RoHS compliant with a 2.5 % rosin flux core, so it produces typical rosin fumes; use normal workshop ventilation.
What soldering iron tip temperature range works with the Sn99 Ag0.3 Cu0.7 alloy?
The alloy melts at a uniform point suited to standard lead-free temperatures; set your iron to the usual lead-free range for 1.2 mm wire.
Can I use this 50 g spool with the 0.3 mm and 3.0 mm wires I already keep on the bench?
Yes, the same flux-core chemistry covers the full 0.3 mm to 3.0 mm range, so you can switch diameters without changing technique.
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