The 919-432J-51S: It is the single-port member of the 91943 base series, terminated by soldering the center contact and shield to the board. Rated to 6 GHz, this jack carries the signal through a PTFE dielectric with a gold-plated beryllium copper center contact. The 500-cycle mating life is high for an MCX. The gold-plated brass body resists corrosion in humid or salt-spray conditions without an additional finish.
The snap-on retention ring holds the connector body in place during wave or hand soldering — no additional hardware is needed. The board footprint must match the 50 Ohm impedance target; the datasheet layout shows the ground plane clearance and pad dimensions to keep the launch impedance controlled up to 6 GHz. Beryllium copper retains its spring force at elevated temperatures better than phosphor bronze, which matters for the 165°C upper operating limit.