Matte tin plating for hybrid connectors
Matte tin at SM Finishes is a functional solderable finish for fine-pitch electronics and hybrid connector tails, plated to ASTM B545 / MIL T 10727 when specified. It is chosen when bright tin’s residual stress is a whisker risk. ISO 9001:2015 and AS9100:2015 from Machohalli, Bengaluru.
Taiwanese and Japanese electronics OEMs often call out matte tin with a nickel barrier and a maximum storage window before solder. Lead time is quoted from that window, thickness, undercoat and lot size — not from a generic catalogue.
Why Our Matte Tin Plating Stands Out
Our matte tin plating process goes beyond basic coating — it is an engineered solution tailored for functional excellence.
- Superior Solderability
- Minimal Whisker Growth
- Uniform Microcrystalline
- Excellent Corrosion
- RoHS & REACH Compliance
- Optimized for High-Volume
Matte tin plating at SM Finishes is designed for engineers and manufacturers who require a coating that is both technically precise and visually understated. Whether applied to small-scale connectors or high-volume industrial components, our process ensures performance without compromise.
Precision & Craftsmanship
We employ state-of-the-art electroplating technology, precise bath chemistry control, and automated monitoring to achieve flawless matte finishes. Each component undergoes thorough inspection, ensuring the coating thickness, adhesion, and surface properties meet your exact specifications.
Applications
Matte tin plating is widely used in electronics, telecommunications, and precision mechanical parts where solderability, corrosion protection, and regulatory compliance are critical.
Matte tin process
We plate matte tin as an engineering deposit, not a decorative one. Nickel undercoats are used when the drawing requires a barrier. Thickness and appearance (matte, not bright) are held to print and checked on Fischer XRF with RoHS-capable heads. Process control sits under the same QMS as our gold and nickel lines.
Packing for export must respect the solderability window. We will confirm that against your logistics plan for Japan, Taiwan and South Asia lots. PPAP is available for automotive programmes.
Applications in electronics and hybrid connectors
Fine-pitch tails, press-fit adjacent terminals where whisker control is written into the spec, and mixed assemblies that also carry gold signal pins. Some housings specify bright tin on visible terminals and matte on solder tails — tell us early so masking or split flows are quoted correctly.
Aerospace and defence connectors more often use gold on contacts; matte tin appears on solderable hardware and certain electronics tails in the same product family. Send the BOM finish list together.
Barrel vs rack, and bright vs matte
Rack when geometry and thickness must be held; barrel for bulk small parts. Bright tin is the shiny, readily wettable cousin — see that page if the print says bright. Do not treat matte vs bright as interchangeable without the OEM’s agreement.
Related: bright tin, electroless nickel, gold plating. Founded 2019; William Anthony Raj J, 27 years in surface engineering.
Questions? You’re covered
We’ve gathered answers to the most common questions to help you understand our services, processes, and quality standards with ease.
