The SMA connector is a subminiature coaxial cable connector whose name is derived from the Sub-MiniatureA connector. It has found many applications to provide connections for RF components in devices that require coaxial connections. It is commonly used to provide RF connections between circuit boards. Many microwave components include filters, attenuators, mixers and oscillators, using SMA connectors.
The connector has a threaded external connection interface, which has a hexagonal shape and allows tightening with a wrench. They can be tightened to the correct tightness with a special torque wrench, so that a good connection can be achieved without over-tightening. The required torque is usually 8 inch pounds.
Technical index of SMA connector
Temperature range: -65～+165°C (PECable-40～+85°C).
Vibration: VibrationMIL-STD-202, Method213.
Characteristic impedance: 50Ω/75Ω.
Frequency range: DC～12.4GHz (semi-rigid cable 0～18GHz).
Working voltage: 335Vmax (effective value).
Withstand voltage: 1000Vrms (minimum sea level).
Between inner conductors: ≤3mΩ.
Between outer conductors: ≤2mΩ.
Insulation resistance: ≥5000MΩ.
Insertion loss: ≤0.15dB/6GHz.
Voltage standing wave ratio: Straight type: Straight flexible cable ≤1.10+0.002f semi-rigid cable ≤1.05+0.001f; bent Rightangle flexible cable ≤1.20+0.003f semi-rigid cable ≤1.10+0.001f.
Durability: Plug and play ≥500 times (cycles).
