Sn100C
Lead-Free Alloy Sn/Cu0.7/Ni0.05/Ge - SAC305 Alternative
Premium Sn100C alloys with nickel and germanium for electronic soldering high reliability. Ideal for premium automotive applications, electrical and RoHS compliance. Superior performance compared to SAC305.
About the Sn100C Family
Equivalencies and Trademark Protection
For trademark protection reasons, Dickmann produces alloys belonging to the Sn100C family under proprietary designations. Our alloys offer metallurgical characteristics equivalent to the Sn100C family standards.
Our Sn100C Family Alloys
99SnCuNiGe
Composition: Sn/Cu0.7/Ni0.05/Ge - Eutectic standard 227°C
99SnNiGe
Copper-free version - Reduced tip erosion
99SnCuNiGe+
Enhanced version - Greater mechanical strength
Garanzia Qualità Dickmann: All our alloys are produced with High Grade metals (≥99.9%), ISO 9001:2015 certified and RoHS/REACH compliant. Full quality guarantee and traceability.
Why Choose Sn100C instead of SAC305
Key advantages of silver-free Sn100C alloy
Sn100C Technical Data
Metallurgical and thermal properties of Sn/Cu0.7/Ni0.05/Ge alloy
| Property | Value | Unit | Notes |
|---|---|---|---|
| Composition | Sn/Cu0.7/Ni0.05/Ge | % | Balanced for optimal performance |
| Melting Point | 227 | °C | Eutectic (no range) |
| Density | 7.4 | g/cm³ | Similar to SAC305 |
| Tensile Strength | 40-45 | MPa | Superior to base Sn-Cu |
| Elongation | 30-35 | % | Excellent ductility |
| Thermal Conductivity | 57 | W/m·K | Efficient dissipation |
| Copper Dissolution | 2.5 | μm/s | 50% less than SAC305 |
| Drossing Rate | 0.5 | %/hour | -40% vs SAC |
| Shelf Life | 7 | years | Room temperature storage |
Sn100C Alloy Applications
Where to use Sn100C instead of SAC305
Wave Soldering & Selective
Sn100C is the preferred choice for wave soldering: zero bridges on 0.5mm pitch, superior hole filling on multilayer, compatible with existing machines (no modifications).
Consumer Electronics
Sn100C alloy dominates consumer electronics: smartphones and tablets (high-volume assembly), computers and peripherals, gaming consoles and accessories.
LED Industry
Sn100C excels in LED manufacturing: excellent wettability on aluminum substrates, reduced thermal stress (eutectic), reliable joints in thermal cycling.
Automotive Tier 2-3
Approved for non-critical automotive components: infotainment systems, interior lighting, parking sensors.
Sn100C vs SAC305 vs Sn99Cu: Comparative Analysis
Detailed comparison of performance, costs and applications
| Characteristic | Sn100C | SAC 305 | Sn99Cu |
|---|---|---|---|
| Silver Content | 0% ✅ | 3% | 0% |
| Relative Cost | Base ✅ | +30% | -10% |
| Melting Point | 227°C (eutectic) ✅ | 217-220°C (range) | 227°C |
| Joint Appearance | Bright ✅ | Dull/Grainy | Dull |
| Wettability | Excellent (Ge) ✅ | Good | Poor |
| Dross Formation | 0.5%/hour ✅ | 0.8%/hour | 0.6%/hour |
| Copper Erosion | Minimal ✅ | High | Medium |
| Bridging Rate | <1% ✅ | 2-3% | 3-4% |
| Soldering Tip Life | 100% ✅ | 60% | 80% |
| Equipment Corrosion | None ✅ | Medium | Low |
| Flux Compatibility | Universal ✅ | Good | Limited |
| Rework Cycles | 2-3 ✅ | 1 | 1-2 |
Conclusion: Sn100C offers the best quality/price compromise for high-volume lead-free production. Ideal for wave soldering, LED manufacturing and consumer electronics where SAC305 is over-specified.
Frequently Asked Questions about Sn100C
Everything you need to know about Sn100C alloy
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