SMA uses a threaded interface. 50 Ω SMA connectors are semi-precision, subminiature units that provide excellent electrical performance from DC to 18 GHz. These high-performance connectors are compact in size and mechanically have outstanding durability. It can yield the best value in your microwave system. Among typical applications are components, such as piders , mixers , amplifiers , trimmers and attenuators. SMA cinnectors are also used to provide interconnections from printed circuit board striplines to coaxial cable.SMA is available both in Standard and Reverse Polarity.Technical SpecificationElectrical CharacteristicsImpedance50ΩFrequency range12.4GHz For Flexile Cable , 18 GHz For Semi-Rigid CableVSWR-Value1.15+0.02f(GHz) For RG316/U1.06+0.01f(GHz) For RG405UInsertion loss0.030× (GHz)Proof Voltage (depending on cable type)500 V / 50 Hz For RG58U/ ,375 V / 50 Hz For RG316/UInsulation Resistance≥ 5000MΩContact ResistanceCenter Contact≤3mΩOuter Contact≤2.5mΩMechanical CharacteristicsLatch retention force≥300NMating Cycles≥500cyclesEnvironmentalWorkingTemperature Range-55°Cup to +165°CRelative HumidityMIL-STD-202，