1、High quality metal makes this adapter so wear-resistant that it will work normally for a very long time 2、This SMA female to BNC male RF Adapter creates stable adaptation, gives a glossy telecommunication 3、High quality screw makes connection so tight that telecommunication will be stable and glossy 4、This SMA to BNC Adapter is greatly for transceiver, communication connecting use with no stuck or conflict. 5、The SMA-BNC adapter is made of high quality metal, which gives it a super long service life Feature: 100% brand new and high quality Model: SMAK/BNCJ MATERIAL & PLATING: shell: brass, gold plated contact pin: brass, gold plated socket: beryllium, gold plated elastic contact: beryllium, gold plated insulator: PTFE crimp ferrule: copper alloy, nickel or gold plated o-ring sealing: silastic Insulation material: High temperature Working Frequency: High frequency Characteristic: Fire retardant / flame retardant Applications: communication Specification: Temp.range -65~+165°C (PE Cable -40~+85°C) Vibration: MIL-STD-202, Method 213 Impedance: 50Ω Frequency Range: DC~12.4GHz(Semi-rigid cable: 0~18GHz) Working Voltage: 335V max（RMS） Withstand Voltage: 1000V rms Contact resistance Center Contact ≤ 3 mΩ Outer Contact ≤ 2 mΩ Insulation resistance ≥ 5000 MΩ Insertion loss ≤0.15 dB/6GHz VSWR （Straight） Flexible cable ≤1.10+0.002f Semi-rigid cable ≤1.05+0.001f （Right angle） Flexible cable ≤1.20+0.003f Semi-rigid cable ≤1.10+0.001f Durability(mating) ≥500 times（cycles） Package Includes: 1* Adapter