The 5413969-2: It's a 50 Ohm nominal impedance connector rated to 4 GHz, built around a PTFE dielectric and a beryllium copper centre contact plated in gold. This is a single-port jack suited for RF signal paths in test equipment, broadcast video routers, instrumentation, and industrial RF links where a reliable, field-serviceable coaxial interconnect is needed.
The 4 GHz upper frequency limit covers L-band, S-band, and the lower C-band, making it usable for cellular base station backhaul, GPS antenna feeds, and laboratory signal generators operating up to that ceiling.
Mechanical Durability and Mating Life
The bayonet coupling gives a positive lock — a quarter-turn engages the pin-and-slot, which is faster than a threaded SMA and more secure than a push-pull for vibration environments inside an equipment rack.
The shield solder posts tie directly to the PCB ground plane, which is essential for keeping the shield path low-inductance at 4 GHz. The zinc body with tin finish is a cost-effective choice for indoor equipment; if the application sees outdoor or corrosive environments, the tin finish is adequate inside a sealed enclosure but not rated for direct washdown.