50 Ohm BNC Jack with Board Lock — Panel Feed-Through for RF up to 4 GHz
The 5415218-5: It carries a single port, a bayonet lock for quick mate, and a 4 GHz max frequency — standard BNC territory, good for video distribution, test equipment, and base-station RF paths up to that band.
Board Lock and Isolated Body — What That Means for a Panel Mount
The board lock feature is a pair of solderable tabs that anchor the jack to the PCB — without them, the torque from tightening the bulkhead nut or mating the bayonet plug can twist the whole connector and crack the solder joints on the center pin and shield. The isolated body means the shell is not tied to the circuit ground internally, which lets you decide the ground path through the chassis or the PCB shield plane — useful when you need to break a ground loop in a sensitive measurement chain.
500 Mating Cycles and the Bayonet Lock — Built for Patch-Panel Duty
In a patch-panel or test-bench environment where cables get swapped daily, that is a couple years of service. The bayonet lock gives a positive mechanical mate that resists vibration — the half-turn engagement seats the center contact and compresses the dielectric, holding the 50 Ohm impedance steady through the interface.