✅ The Challenge
A high-precision connector manufacturer in Germany required bright, corrosion-resistant tin coatings for copper terminals used in EVs and power transmission. Their goals included:
- Uniform, high-purity deposits over complex part geometries
- Avoiding use of lead or sulfate-based systems due to EU RoHS restrictions
- Achieving excellent solderability and low contact resistance
- Improving bath consistency and maintenance in continuous barrel and rack plating lines
Their current stannous sulfate system caused surface roughness and frequent downtime due to sludge formation.
🧪 The Solution
HoriazonChemical supplied a plating-grade Tin(II) Methanesulfonate (Stannous Methanesulfonate) solution, specifically engineered for connector and terminal coating applications:
- Tin content: 190–210 g/L, with ultra-low levels of Fe, Pb, and halides
- Optimized for use in methanesulfonic acid-based electrolytes
- Enhanced conductivity and throwing power for high-density contacts
- Delivered in IBC totes and 250 kg drums, REACH-registered for EU use
Technical collaboration ensured bath formulation and current density parameters were fully tuned for precision connector manufacturing.
📈 The Results
✔️ Improved Deposit Brightness
Mirror-like tin finishes with excellent thickness control.
✔️ Superior Solderability
Connector surfaces passed IPC wetting balance tests without flux activation.
✔️ Reduced Sludge & Downtime
No sulfate build-up or crystallization even after extended bath use.
💬 Client Testimonial
“We replaced our sulfate-based bath entirely with HoriazonChemical’s methanesulfonate chemistry. The surface finish, plating speed, and long-term consistency have all exceeded expectations.”
— Process Quality Manager, German Connector Manufacturer
⚙️ Cleaner Tin Chemistry for High-Performance Terminals
HoriazonChemical enables high-reliability electrical component manufacturers to enhance surface finish, conductivity, and compliance with modern plating-grade tin solutions. Reach out to us for quotes, product information, sample requests, or technical support. Our team will respond within 24 hours.