This is the less common 75 Ohm variant of the BNC interface — it pairs with video distribution, broadband data, and CCTV applications rather than the 50 Ohm RF test gear. The bayonet lock provides a quick quarter-turn mate with positive retention, and the gold-plated brass centre contact supports 500 mating cycles, making it suitable for field-service connections where the connector is mated repeatedly. Rated to 2 GHz with a 0.15 dB insertion loss, the 221185-7 covers broadcast video channels and DOCSIS cable-modem frequencies without significant signal degradation.
Sourcing & Lifecycle — Obsolete, Last-Time-Buy Window Closed
No official successor order code is listed on record. This part is no longer in production and is not available through the standard TE Connectivity distribution channel. For builds that still require this exact 75 Ohm BNC plug, the remaining inventory is held in independent and surplus distribution channels. If the BOM can accommodate a parametric alternative, a 75 Ohm BNC plug from the same or a compatible series would be the practical path forward. No pin-compatible direct replacement is documented by TE Connectivity for this order code.
Fit & Cable Compatibility
The 221185-7 is built for RG-6 and RG-6A coaxial cables. The crimp termination accommodates the cable diameter and dielectric dimensions of these standard 75 Ohm coax types. Confirm the cable jacket OD and dielectric diameter against the crimp tool die set before committing the assembly line. The nickel body finish and silver housing colour are standard for BNC connectors in outdoor or equipment-rack environments. The polyethylene dielectric material is a common choice for 75 Ohm connectors, providing stable dielectric constant across the operating temperature range.