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# Part of the structure of the RF connector

 Author： Date：10/10/2019 10:59:07 PM N type connector: Threaded RF coaxial connector with an outer conductor of 7 mm (0.276 in.) and a characteristic impedance of 50 Ω (75 Ω). BNC type: bayonet-locked RF coaxial connector with outer conductor inner diameter of 6.5 mm (0.256 inch) and characteristic impedance of 50 Ω. TNC type: outer conductor inner diameter is 6.5 mm (0.256 inch), threaded RF with characteristic impedance of 50 Ω Shaft connector. SMA type: Threaded RF coaxial connector with outer conductor inner diameter of 4.13 mm (0.163 inch) and characteristic impedance of 50 Ω. SMB type: outer diameter of inner conductor is 3 mm (0.12 inch), push-lock type RF with characteristic impedance of 50 Ω Shaft connector. SMC type: Threaded RF coaxial connector with outer conductor inner diameter of 3 mm (0.12 inch) and characteristic impedance of 50 Ω. SSMA type: Threaded RF coaxial connector with an outer diameter of 2.79 mm (0.11 inch) and a characteristic impedance of 50 Ω. 2.92 connector is also called K connector, the frequency can be up to 40ghz 1.85mm connector, also known as V connector, can be as high as 65ghz   Generally speaking, 3.5 mm and 2.4 mm of 2.92 mm mean that the inner diameter of the outer conductor of the connector refers to the inner diameter of the outer conductor of the connector. The basic structural parts of the connector have 1 contact piece; 2 insulator; 3 outer casing (depending on the type); 4 accessories.