SMPM Blind-Mate Receptacle for 40 GHz Signal Paths
The TE Connectivity 2406839-1 is an SMPM receptacle, female socket, part of the Blind-Mate Coaxial series. This is the miniature blind-mate interface — SMPM — designed for dense RF module interconnects where you need a snap-on mate rather than a threaded coupling. It handles signals up to 40 GHz at 50 Ohm impedance, which puts it in the upper band for this connector class, suited for microwave and millimeter-wave assemblies. Termination is solder-only: the shield terminates by solder, and the center contact terminates by solder as well. This is not a crimp connector — it's built for semi-rigid cable, specifically 0.034" diameter, so plan for a soldering step in your assembly process. Rated for 100 mating cycles, which is moderate for an RF connector — enough for module integration and occasional rework, but not designed for frequent connect-disconnect cycles like a test port. The snap-on fastening gives a positive tactile lock without the torque control needed for threaded connectors.
The key difference is frequency: the 2406839-1 runs to 40 GHz, while the 1057230-1 is rated to 22 GHz. The 1057230-1 also uses a stainless steel body and accepts RG-405 (.085" semi-rigid) cable, a larger diameter than the 0.034" cable this SMPM receptacle is built for. If your signal path stays under 22 GHz and you need the larger cable, the 1057230-1 is worth a look; for the higher band, the 2406839-1 is the one.
This receptacle is designed for 0.034" semi-rigid coaxial cable — a common size for microwave module pigtails. The free-hanging, in-line mounting means it's not a board-edge launch; it terminates the cable end and mates with a corresponding SMPM plug on the module or bulkhead. The voltage rating is 175 V, which is typical for RF signal lines rather than power delivery.