For 7/16 series connector inside diameter of external conductor is 16 and outside diameter of internal conductor is approximately 7, so called 7/16. Characteristic impedance is 50 Ω. 7/16 series is coaxial connector connected by large thread, characterized by stable structure, low consumption, high working voltage, favorable shockproof and waterproof, and widely applicable for transfer of moderate and high energy with high reliability Main Performance Index Temperature range: -40-+85oC Frequency range: DC-7.5GHz Contact resistance Between internal conductor: ≤1.0 Ω Between external conductor: ≤ 0.5 Ω Insulation resistance: ≥10,000M Ω Medium anti-voltage: 4000V Voltage standing wave ratio (VSWR) Direct ≤ 1.30 Mechanical endurance: 500 times Executive standard: IEC 169-4 CECC22190 Material and Coating Elastic parts: tin phosphor bronze silvering Non-elastic parts: brass or stainless steel-plating nickel, copper and phosphor alloy/passivation Insulating medium: polytetrafluoroethylene Sealing ring: silicone rubber