The TE Connectivity 413760-9 is a 75 Ohm BNC jack (female socket) designed for crimp termination to RG-59 class coax — specifically RG-59, Belden 9240, 9259, and 9266. It ships as a three-piece kit: the connector body, a centre contact, and a ferrule, so you have everything for a field termination in one bag. Rated to 2 GHz with 0.15 dB insertion loss, this is a video-grade 75 Ohm part, not a 50 Ohm RF connector — the impedance tells you the application.
The Ratings in Context
75 Ohm impedance and 2 GHz maximum frequency place this squarely in the video and CCTV interconnect world — it carries standard-definition composite video, baseband video, and low-frequency data signals, not high-speed digital or RF transmission. The 500 mating cycles are adequate for a patch panel or fixed install where the connector mates once and stays; for daily reconnection in a field-test application, you would want a higher-cycle BNC. The 0.15 dB insertion loss is tight for a crimp-style BNC at 2 GHz, meaning the signal sees little attenuation through the joint.
Termination and Field Fit
The cable group is RG-59 and its Belden equivalents (9240, 9259, 9266), which means the dielectric diameter and braid coverage match the ferrule ID. Free-hanging in-line mounting, no panel hole needed. The bayonet lock mates with any standard 75 Ohm BNC plug; the keying is the standard BNC slot-and-pin, so no special mating half is required beyond a male BNC with the same impedance.