Rated to 4 GHz, it handles common RF bands including ISM, cellular, and broadcast auxiliary without signal degradation. Mounting is bulkhead-style with a front-side nut, so the jack sits flush against the panel and the through-hole solder tails anchor to the PCB. The body is zinc with a nickel finish — nickel holds up to corrosion in indoor equipment racks and doesn't flake like some plated steels. The dielectric is Polymethylpentene (PMP), a low-loss material that keeps the impedance steady through the GHz range. Center contact is phosphor bronze with tin plating. Tin is fine for the 500-cycle rating here — the bayonet lock wipes the contact surfaces on mate, keeping the oxide layer thin.
How It Compares
The only difference is the housing colour: the 5227222-1 is Natural and Silver, while the 5227222-2 is Black and Silver. If the panel aesthetic or a colour-coding scheme matters, that's the deciding axis. For a pure electrical fit, they're interchangeable. If you need gold-plated centre contacts for higher corrosion resistance or more mating cycles, the 5227161-7 is the gold-contact sibling in the same BNC family — same body, same electrical ratings, same 500-cycle spec, but the gold plating on the centre pin gives better performance in humid or outdoor cabinet environments.