40 GHz SMPM Blind-Mate Receptacle for RG-405 Semi-Rigid Cable
The TE Connectivity 2406866-1 is an SMPM-series blind-mate coaxial receptacle, a female socket designed for DC to 40 GHz signal paths. The gold-plated brass body and beryllium copper center contact with gold plating keep the insertion loss low across the full millimeter-wave band.
What the 40 GHz Rating Means for the Signal Path
The 40 GHz maximum frequency sets the usable bandwidth for this SMPM receptacle — it covers the entire Ku, K, and Ka bands, plus the lower end of the millimeter-wave spectrum. At 40 GHz, the 50 Ohm impedance tolerance and the PTFE dielectric control the phase stability through the launch. The 175 V voltage rating is a dielectric-withstand ceiling, not a continuous operating limit; at these frequencies the signal voltage is a fraction of that. The 100 mating cycles are typical for a blind-mate connector in a backplane or module interface — the snap-on coupling wears the detent over time, so this isn't a test-port connector for daily connect/disconnect.
Cable and Termination — RG-405 Only, Solder Both Ends
This receptacle is designed for RG-405 (.086" semi-rigid) coax — the cable group is specified in the part number and the center contact bore, shield diameter, and dielectric support are sized for that cable.
Comparing the 2406866-1 to the 1057230-1 OSP Peer
Both use snap-on coupling, solder termination, and gold-plated beryllium copper center contacts, and both are rated for RG-405 (.085" semi-rigid) cable. The critical difference is bandwidth: the 2406866-1 SMPM receptacle is rated to 40 GHz, while the 1057230-1 OSP jack stops at 22 GHz. If your signal path stays below 22 GHz, the 1057230-1 is a viable alternative with a stainless body that resists corrosion better than brass. Above 22 GHz, the 2406866-1 is the only choice between these two.