SMP Plug, 50 Ohm, 40 GHz – Limited Detent for Board-Level RF
The Molex 0734066692 is a Series 73415 SMP plug with a male pin centre contact, rated for 50 Ohm impedance and 40 GHz maximum frequency. The limited detent feature means the snap-on mating provides a defined retention force without the full-lock of a smooth-bore or the high-insertion of a full-detent — a middle ground that suits board-level interconnects where the connector needs to stay mated under moderate vibration but still be field-releasable without tools. The through-hole solder termination and gold-plated brass body suit RF signal paths where ground continuity and low loss matter up to the 40 GHz ceiling.
Mating and Mounting – What It Takes
This SMP plug mates with any standard SMP female jack (receptacle) that uses a snap-on interface. The limited detent profile means it will not fully lock like a full-detent SMP — it releases with a defined axial pull force, which is intentional for applications where the connector pair must separate under a controlled load or be easily unmated during test. The through-hole mount requires a drilled PCB footprint; the gold centre contact and brass body are soldered in place. Shield termination is also solder, so the ground path is continuous around the signal pin.
Dielectric and Materials – PEEK for RF Stability
The dielectric is polyetheretherketone (PEEK), a high-performance thermoplastic that maintains stable electrical properties across temperature and frequency. PEEK's low dielectric constant and low loss tangent support the 40 GHz bandwidth without the signal degradation you would see with a standard nylon or LCP at those frequencies. The centre contact is brass with gold plating; the body is brass with gold finish — the gold layer resists corrosion and maintains consistent contact resistance over repeated mating cycles.