75-Ohm 1.0/2.3 Receptacle, 4 GHz, Bulkhead-Mount
The 282121-75: The 75-ohm impedance is the defining parameter here — it matches 75-ohm cable and system impedance, common in broadcast video, telecom, and test equipment where a 50-ohm path would introduce a mismatch.
Panel Mount with Hardware Included
Mounts through a panel hole with a bulkhead — front side nut — and the package includes the connector and nut (2 pieces total). The through-hole solder termination for the centre contact and shield means the signal and ground paths are soldered to the PCB or cable centre conductor and braid. The push-pull fastening type allows quick mate/demate without tools, but the bulkhead nut secures the connector body to the panel so the push-pull action doesn't stress the solder joints.
Temperature Range and Dielectric
The 250 V rating across the PTFE is conservative for the material; the real voltage limit in a 75-ohm system is usually set by the cable or the air gap at the interface, not the connector itself.
Mating Half and System Compatibility
Mates with a male 1.0/2.3 plug, push-pull fastening. The 1.0/2.3 interface is a defined standard for compact 75-ohm coaxial connectors — look for a male plug with the same 75-ohm impedance and 1.0/2.3 style.