The TE Connectivity 415504-3 is an SMB mini jack with a male pin centre contact, designed for 75 Ohm systems and rated to 3 GHz. The gold-plated brass body and snap-on fastening suit it for board-level RF interconnects where quick connect-disconnect is needed. Through-hole solder termination with a PTFE dielectric — the 75 Ohm impedance marks this for video distribution, broadcast, or test equipment rather than the 50 Ohm standard used in telecom.
No official replacement is listed in the manufacturer's records — for a BOM line requiring this exact order code, the channel is surplus or broker stock.
Rated for 335 V and a -65°C to 165°C operating range — the wide temperature envelope and PTFE dielectric make it usable in environmental test chambers or outdoor-adjacent RF paths despite the snap-on retention being less vibration-resistant than a threaded interface.