Evaluation of Plating Options for RF Connectors

This white paper presents a comprehensive evaluation of various plating options for RF connectors, focusing on their corrosion resistance, contact resistance, wear resistance, solderability, and passive intermodulation properties. The study was conducted by HUBER+SUHNER AG and Rosenberger Hochfrequenztechnik GmbH & Co. KG, highlighting the importance of material plating in determining the performance of RF connectors. The paper details the results of a 720-hour salt mist test on five different platings: silver, white bronze, SURO720, tin-nickel, and electroless nickel-phosphorus. It outlines the performance characteristics of each plating, noting that silver plating offers the best contact resistance, while electroless nickel-phosphorus demonstrates superior wear resistance. The findings indicate that SURO720 meets critical requirements for corrosion, solderability, and electrical performance, making it a viable alternative to traditional platings. The document serves as a reference for product designers in selecting appropriate plating for specific applications.