High-performance RoHS compliant alloy

SAC 0307 Lead-Free Solder Wire ​

SAC 0307 (Sn99 Ag0.3 Cu0.7) – Technical Specifications

Category Property / Parameter Units Value / Setting
Material Properties Solidus °C 217
Liquidus °C 228
Hardness HV 14.1
Density g/cc 7.33
Specific Heat Capacity J/kg °C 0.17
Stress at Max Load (Mean) N/mm² 29.5
Elongation at Failure (Mean) % 21.8
Thermal Expansion (30–100°C) x10⁻⁶ /°C 1.79
Thermal Expansion (100–150°C) x10⁻⁶ /°C 2.30
Silver Content % 0.3 ±0.15 / -0.05
Copper Content % 0.70 ±0.1
Lead Content % Max 0.03%
Recommended Process Settings Single Wave – Pot Temperature °C 255–265
Single Wave – Conveyor Speed m/min 1.0–1.5
Single Wave – Contact Time sec 2.3–2.8
Dual Wave – Pot Temperature °C 255–265
Dual Wave – Conveyor Speed m/min 1.0–1.5
Dual Wave – Contact Time sec 3.0–3.5
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