75 Ohm F-Type Jack for Board-Edge RF
The Molex 0733300180 is a 75 Ohm F-type jack (female socket) from the Series 73330 line, designed for through-hole right-angle PCB mounting. It carries a 2 GHz frequency ceiling and a 500 V voltage rating, with a threaded fastening collar for vibration-resistant mating. This is the single-port version, intended for board-edge RF signal entry in equipment like set-top boxes, cable modems, satellite receivers, and head-end distribution gear.
The 75 Ohm characteristic impedance is the standard for video and broadband RF — CATV, CCTV, satellite IF distribution, and DOCSIS cable modems all run on 75 Ohm transmission lines. The 2 GHz maximum frequency covers the full L-band satellite IF (950-2150 MHz) and DOCSIS 3.1 upstream/downstream bands with margin. The PTFE dielectric keeps insertion loss stable across the band and temperature range. The 500 V rating is unusually high for an F-type — it supports remote power insertion over the coax (e.g., +48 VDC for line amplifiers or LNB power) without derating concerns at the connector interface.
This jack mates with any standard F-type male plug. The threaded coupling nut on the male side engages the jack's threaded barrel for a secure, vibration-resistant RF connection.