SAC0307 is a lead-free solder alloy made up of 99% tin, 0.3% silver, and 0.7% copper. With a low melting range of 217–224°C (423–441°F), it offers excellent fluidity for smooth, reliable joints with minimal bridging. It's a practical, cost-effective option compared to higher-silver alloys like SAC305, without sacrificing mechanical reliability. Well-suited for wave soldering, SMT reflow, selective soldering, and rework applications across consumer electronics, industrial equipment, and automotive assemblies.
Features
- Low melting range of 423-441°F (217-224°C)
- Excellent Fluidity offers superior wetting and flow characteristics, ensuring smooth solder joints with minimal bridging or defects.
- Cost-Effective Alternative – Lower silver content compared to SAC305, providing strong mechanical reliability at a reduced cost.
- Versatile Application – Suitable for wave soldering, dipping processes, and manual/automated soldering, making it a widely used choice in electronics manufacturing.
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SAC0307 - 1 lb. Regular Bar
$79.00
SAC0307 Solid solder in a nominal 1 lb. Regular Bar. 423-430°F/217-221°C Melting temperature
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SAC0307 Solid 3/32" x 1/2 lb spool
$58.00
SAC0307 Solid solder in 3/32" (.093") diameter on a 1/2 lb. Spool. 423-430°F/217-221°C Melting temperature
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SAC0307 - 5 lb. Notch Bar
$380.00
SAC0307 Solid solder in a nominal 5 lb. Notch Bar. 423-430°F/217-221°C Melting temperature
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SAC0307 Solid 3/32" x 1 lb spool
$91.00
SAC0307 Solid solder in 3/32" (.093") diameter on a 1 lb. Spool. 423-430°F/217-221°C Melting temperature
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SAC0307 Solid 1/32" x 1/2 lb spool
$71.00
SAC0307 Solid solder in 1/32" (.031") diameter on a 1/2 lb. Spool. 423-430°F/217-221°C Melting temperature
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SAC0307 Solid 1/32" x 1 lb spool
$104.00
SAC0307 Solid solder in 1/32" (.031") diameter on a 1 lb. Spool. 423-430°F/217-221°C Melting temperature
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SAC0307 Solid 1/16" x 1/2 lb spool
$58.00
SAC0307 Solid solder in 1/16" (.062") diameter on a 1/2 lb. Spool. 423-430°F/217-221°C Melting temperature
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SAC0307 Solid 1/16" x 1 lb spool
$91.00
SAC0307 Solid solder in 1/16" (.062") diameter on a 1 lb. Spool. 423-430°F/217-221°C Melting temperature
SAC0307 Technical Data:
| Composition | 99.0% Tin (Sn), 0.3% Silver (Ag), 0.7% Copper (Cu) |
| Melting Range | 217°C (423°F) - 227°C (441°F) |
| Density | ~7.3 g/cm³ |
| Thermal Expansion Coefficient | ~24 x 10⁻⁶ /°C |
| Thermal Conductivity | ~60 W/m·K |
| Specific Heat Capacity | ~0.21 J/g·K |
| Hardness | ~15 HV |
| Tensile Strength | ~40 MPa |
| Applications | Wave soldering, surface mount technology (SMT), reflow soldering |
| Advantages | Excellent solder joint reliability, fast wetting, low cost compared to SAC305 |
| RoHS Compliance | Yes, lead-free and compliant with environmental regulations |
| Environmental Impact | Reduced toxicity compared to lead-based solders, recyclable |
| Availability | Available in bar solder and wire solder |
| Recommended Solder Pot Temperature | 255 - 265°C (491 - 509°F) |