The TE Connectivity 5225555-5 is a TNC plug kit — a threaded, weatherproof RF connector built for RG-141 and RG-141A cable. It ships as a three-piece assembly: the nickel-plated brass body, the gold-plated center contact, and the crimp ferrule. The 50 Ohm impedance and 11 GHz frequency ceiling put it in the upper band of the TNC family, good for outdoor antenna feeds, test equipment, and base-station cabling where the bayonet-style BNC would rattle loose under vibration.
The 11 GHz maximum frequency means it holds a clean signal path up through the X-band lower edge; above that the VSWR climbs and the threaded interface becomes a stub. The 500 mating cycles are typical for a threaded RF connector — the gold-on-nickel center contact resists wear through repeated field swaps, but the thread itself will show galling before the contact gives out. The weatherproof rating means the interface seal keeps moisture out when mated — it is not a submersible IP68, but it handles rain, condensation, and splash in outdoor enclosures. The PTFE dielectric holds that temperature span without melting or cracking.
This kit is dimensioned for RG-141 cable — the ferrule ID and the center-contact pin diameter match that cable's dielectric OD and center conductor gauge. Crimping the shield ferrule and the center contact in two separate dies gives a gas-tight termination that holds the 50 Ohm impedance through the transition. The threaded fastening locks the plug into a TNC jack; the coupling nut torque should be hand-tight plus a quarter turn with a wrench — over-torquing deforms the PTFE and shifts the impedance.