SN100C® Solder Alloy
Premium Lead-Free SN100C Solder Bar for Wave & Selective Soldering
SN100C is a premium lead-free solder alloy specifically engineered for high-performance wave and selective soldering applications. As a silver-free alloy, it delivers exceptional solderability and smooth wetting, resulting in bright, reliable solder joints that mimic the appearance of traditional leaded solder. This cost-effective formulation significantly reduces copper erosion and dross formation, ensuring high-quality results without the premium price of silver-bearing alloys. These characteristics make it the industry-leading choice for manufacturers seeking a high-performance SN100C solder bar.
| Property | Value | Performance Benefit |
|---|---|---|
| Alloy Type | Lead-free, Silver-free | RoHS compliant, reduced material cost |
| Alloy System | Tin-Copper-Nickel-Germanium (Sn-Cu-Ni-Ge) | Optimised fluidity, strength, and oxidation control |
| Melting Point | Approx. 227°C – 230°C | Stable, repeatable wave/selective soldering |
| Joint Appearance | Smooth, bright fillets | Visual quality similar to traditional leaded solder |
| Process Compatibility | Wave and selective soldering | Ideal for high-volume PCB assembly lines |
| Application Scope | Automotive, telecoms, consumer, industrial controls | High reliability in demanding environments |
Key Features & Benefits for PCB Assembly
RoHS compliant – Superior wetting – Cost-effective performance
- Fully RoHS Compliant: A lead-free solution meeting all environmental and industrial standards.
- Superior Solderability: Smooth wetting properties for clean, reliable joints.
- Silver-Free Formulation: Reduces material costs while maintaining joint integrity.
- Enhanced Reliability: Minimised copper erosion for long-term joint stability.
- Process Versatility: Fully compatible with both wave and selective soldering machines.
- Industry Standard: Ideal for high-volume electronics manufacturing and precision PCB assembly.
Technical Composition & Specifications of SN100C Solder
Stabilised Sn-Cu-Ni-Ge – Eutectic alloy – Reliable performance
The SN100C alloy is a stabilised Tin-Copper-Nickel-Germanium (Sn-Cu-Ni-Ge) eutectic formulation. The addition of Nickel and Germanium optimises fluid flow and mechanical strength while reducing oxidation.
- Melting Point: Eutectic at approximately 227°C – 230°C.
- Joint Appearance: Smooth, bright fillets (unlike the grainy finish of SAC305).
- Operating Stability: Highly reliable for modern, high-density electronics assembly.
Industrial Applications
High-reliability electronics – Demanding environments – Thermal fatigue resistance
SN100C solder bars thrive in demanding commercial and industrial environments, powering critical systems in automotive electronics, telecommunications, consumer goods, and industrial controls. The alloy provides a safer workplace with low smoke and minimal fumes, while its excellent thermal fatigue resistance ensures durability in extreme operating conditions.
UK Exclusive: Licensed SN100C Manufacturer
Authentic SN100C – Licensed manufacture – Proven since 2002
DKL Metals Ltd is the only licensed manufacturer of SN100C solder bar in the UK. While the original patent has expired, we maintain the exclusive rights to the SN100C brand name and the official manufacturing license granted by Nihon Superior Co. Ltd of Japan.
Our partnership, established in 2002, guarantees that every bar produced in our UK facility adheres to the original proprietary formulation and meets rigorous quality benchmarks. By choosing DKL Metals, you are sourcing authentic SN100C backed by decades of metallurgical expertise and quality management systems certified to BS EN ISO 9001:2015.
Quick FAQ: SN100C Solder Bar
What is SN100C and why choose it over SAC305?
SN100C is a silver-free Sn-Cu-Ni-Ge alloy with brighter joints, less copper erosion, and lower cost—ideal for wave soldering. Avoid silver’s volatility and its premium entirely.
Is SN100C fully RoHS compliant?
Yes, it’s lead-free and meets all RoHS, REACH, and ELV standards.
What are the minimum order quantities?
20kg for direct from DKL; smaller quantities available via Surclean.
How do I get pricing?
Contact using one of the methods below—a member of our sales team can give you a quote.
In what product formats is SN100C solder available?
SN100C is available in 1kg bars, 2kg and 3.8kg autofeed ingots, chunks, and pellets. We also supply 125g and 250g tinman sticks, as well as blowpipe solder for specialist applications.
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Ordering Information
For high-volume or commercial requirements (minimum order quantity of 20kg), please contact our sales team directly using the contact buttons below for contract pricing and technical support.
For all small-scale orders or quantities under 20kg, please visit our trusted partner, Surclean Material Technology, who maintains stock for immediate dispatch of SN100C Bar, Chunks, and Solder Pellets.