The TE Connectivity 5-1814825-1 is an F-type jack, female socket from the ZDC/Greenpar series, designed for 75 Ohm systems with a 1 GHz maximum frequency. The nickel-plated zinc body and tin-plated phosphor bronze centre contact are built for standard video distribution, CATV headends, and test equipment where 75 Ohm impedance is the norm.
For a BOM that calls out 5-1814825-1, the options are a last-time buy through surplus or broker channels, or a re-design to a current 75 Ohm F-type jack from the same or another series. The storefront can source remaining inventory against an RFQ — current availability is confirmed at quote time.
The 75 Ohm impedance and 1 GHz bandwidth make this jack a fit for standard-definition video, legacy CATV, and RF test points where the signal path is 75 Ohm end-to-end. The threaded fastening type gives a secure mate that won't vibrate loose in a rack or cabinet.