It sits in the Blind-Mate Coaxial series, a family of push-on connectors built for board-to-board and module-to-module links inside microwave assemblies, test equipment, and phased-array antenna systems. The SMPM interface is smaller than the SMP or SMA, letting you pack more ports per board edge while keeping a 50 Ohm path up to 40 GHz. Key specs: 50 Ohm impedance, DC to 40 GHz frequency range, 175 V voltage rating, and 100 mating cycles. The centre contact is gold-plated beryllium copper for low insertion loss and repeatable contact resistance over those 100 mates. Mounting is hybrid: the connector accepts both surface-mount and through-hole solder attachment (the shield termination is solder). That dual-option footprint gives layout flexibility — SMT for automated reflow lines, through-hole where you need extra mechanical hold on a board that sees vibration or repeated cable dress.
What the 100 Mating Cycles Mean for Your Build
100 mating cycles is the rated endurance for this SMPM plug.
The 2406841-1 uses a snap-on fastening — the blind-mate mechanism engages with a full detent that gives tactile feedback when the plug seats into the receptacle. No threading, no torque wrench; just push until it clicks. The full detent feature (listed under Features) means the retention force is higher than a smooth-bore push-on — it resists casual pull-off from cable movement but still releases with a firm axial pull when you need to unmate it.