Series SSMA RF Coaxial Connector is a subminiature, high-performance RF connecting component, designed as a smaller version of SMA connectors with a similar interface structure. Compliant with MIL-C-39012, IEC 169-18 and GJB 681A standards, it features a secure 10-36 UNS threaded coupling mechanism, compact size and excellent high-frequency performance, serving as a core interconnection part in high-density, high-frequency RF systems.
The series boasts superior electrical performance tailored for high-frequency scenarios. With a fixed characteristic impedance of 50Ω (75Ω optional for specific applications), it supports a wide working frequency range from DC to 35GHz (up to 40GHz for enhanced models), perfectly adapting to microwave, millimeter wave and high-speed signal transmission needs. Key electrical parameters are outstanding: VSWR is controlled within ≤1.07+0.04√f (GHz), insertion loss is extremely low, contact resistance of inner conductor ≤5mΩ and outer conductor ≤2.5mΩ, while insulation resistance ≥1000MΩ, ensuring minimal signal attenuation and distortion.
Its unique advantages lie in miniaturized size and reliable threaded coupling. Compared with SMA connectors, it is more compact, enabling high-density PCB layout and saving installation space, while the threaded mechanism ensures firm mating and strong vibration resistance. Manufactured with precision processes, it adopts gold-plated brass male contacts, gold-plated beryllium copper female contacts, brass housing and PTFE insulators, withstanding -55℃ to +155℃ working temperature and 500+ plugging cycles.
Widely applied in aerospace, radar systems, satellite communication, test instruments, 5G millimeter wave modules and high-density PCB interconnections, it is usually paired with miniature flexible or semi-rigid cables. As equipment evolves towards miniaturization and high frequency, it remains a reliable, high-performance solution for subminiature RF interconnection.