Dickmann Logo
Premium Lead-Free Automotive Alloys

SAC 307

Lead-Free Alloy Sn96/Ag3/Cu0.7 - Superior Reliability for Automotive and Critical Applications

SAC 307 is the lead-free solder alloy with composition Sn96/Ag3/Cu0.7, available from Dickmann in bars, wires and SMD pastes. SAC 307 alloys offer superior thermal cycling resistance compared to SAC 305 thanks to higher copper content (0.7%). SAC 307 alloy melts at 217-220°C ensuring ultra-reliable joints for automotive, industrial and mission-critical applications. Immediate stock SAC 307 alloys available in Italy and Europe. Ideal for electronics, automotive and industrial applications. Discover also our other lead-free alloys.

Why Choose SAC 307 Alloys for Automotive

Key advantages of SAC 307 alloys compared to standard SAC 305

Superior Thermal Cycling Resistance
Higher copper content (0.7% vs 0.5%) for optimal thermal fatigue resistance in automotive applications -40°C to +125°C
Optimal Melting Point
217-220°C: identical to SAC 305 but with superior reliability in harsh conditions and repeated thermal stress
Automotive Certifications
RoHS, REACH compliant and AEC-Q100 certified for automotive. Ideal for ECUs, sensors and critical systems
Premium Versatility
Available in bars, flux-cored wires and SMD pastes. Compatible with all processes: wave, selective, reflow
Fili animati no-clean - Saldatura di precisione
Riparazioni elettroniche con fili animati
Produzione artigianale con fili animati
Paste smd per saldatura

SAC 307 Alloys Technical Data

Metallurgical and thermal properties of Sn96/Ag3/Cu0.7 alloys

PropertyValueUnitNotes
CompositionSn96/Ag3/Cu0.7%Higher copper content vs SAC 305
Melting Point217-220°CIdeal soldering range
Density7.4g/cm³At room temperature
ComplianceRoHS/REACH/AEC-Q100-Automotive certified
Thermal Cycling ResistanceSuperior vs SAC 305-Ideal for automotive and industrial

SAC 307 Alloys Applications

Sectors where SAC 307 alloys offer superior reliability

Premium Automotive
Premium Automotive
ECUs, sensors, ADAS systems, automotive infotainment -40°C to +125°C
Harsh Industrial
Harsh Industrial
Applications with repeated thermal cycling, vibrations and mechanical stress
Critical Electronics
Critical Electronics
Mission-critical electronics, aerospace, defense, implantable medical
Energy & Power
Energy & Power
Inverters, converters, power systems with repeated on-off cycles

SAC 307 Alloys vs SAC 305 vs SAC 405: Comparative Analysis

Detailed comparison of performance and applications of SAC alloys

AlloyCompositionMelting PointApplication Notes
SAC 307Sn96/Ag3/Cu0.7217-220°CSuperior thermal cycling resistance, premium automotive
SAC 305Sn96.5/Ag3/Cu0.5217-220°CElectronics standard, excellent cost/performance balance
SAC 405Sn95.5/Ag4/Cu0.5217-220°CMaximum reliability, more silver, higher cost
Sn-CuSn99.3/Cu0.7227°CEconomic, silver-free, high volume

💡 Nota: SAC 307 alloys represent the ideal compromise between automotive reliability and cost, with superior performance to SAC 305 in harsh conditions.

Frequently Asked Questions about SAC 307 Alloys

Dickmann expert answers about SAC 307 alloys

Switch to SAC 307 Alloys: Superior Reliability for Automotive

Immediate SAC 307 alloys stock - Premium thermal cycling resistance - Availability Italy and Europe

Discover our complete range of soldering products including SAC 305 bars, flux-cored wires and SMD pastes. Certified ISO 9001. Available alternatives: SAC 405, Sn100C.

Contact Us