UHF Panel Jack, 500 MHz Ceiling, 500 Mating Cycles
The 5-1814815-1: It's the kind of RF interconnect you'd find on the back of a base station amplifier or a marine radio, where the signal path runs below 500 MHz and the 500 V rating gives you headroom for transmitter power. The non-constant impedance means it's not a precision 50-ohm line; UHF connectors trade impedance control for ruggedness and quick mate-unmate in the field.
Obsolete — Sourcing Through Surplus and Broker Channels
If you're designing a new build, look at the current UHF connector offerings from TE's standard catalog rather than chasing an obsolete order code.
The 500 mating cycles tell you this jack is built for regular connect-disconnect — think test equipment or temporary antenna hookups, not a once-and-forget permanent install. The gold-plated center contact on brass resists corrosion and fretting through those cycles. The solder cup termination means you tin the center conductor and flow solder into the cup — no crimp tool needed, but it takes a steady hand and a heat-sink to avoid melting the PBT dielectric. The nickel-plated zinc alloy body holds up in marine or industrial cabinet environments where corrosion is a concern.