Features Specifications:Sell N-KK connector  Materials and plating: Shell/body: brass, nickel  Contact pin: phosphore bronze, gold  Insulator: PTFE  Crimp ferrule: brass, gold  Electrical characteristic: Impedance: 50 Frequency range maximum: 4GHz Dielectric withstanding voltage: 2,500V (RMS) Contact resistance: center conductor ≤1m Outer conductor: ≤1m Insulation resistance: ≥5,000m VSWR: DC 3GHz 1.2 Mechanical characteristic: Mating: 5/8-24UNS-2a Durability: ≥500 cycles Temperature range: -55°C to 155°C