SMP Plug, 50 Ohm, 40 GHz — Molex 73415 Series
The Molex 0734156183 is a 1-port SMP plug, male pin, from the 73415 series of RF interconnect components. The snap-on fastening with limited detent provides a quick blind-mate connection typical of SMP interfaces, used in dense board-to-board or cable-to-board assemblies where space is tight and mating access is restricted.
What the 40 GHz and 500-Cycle Ratings Mean for Your RF Path
The 40 GHz upper frequency limit means this connector will pass signals with low loss up through the Ka-band and into the lower mmWave region. The specified insertion loss of 0.1 dB is typical for a single SMP mated pair at lower frequencies; at 40 GHz the actual loss will be higher, but the connector interface itself is designed to maintain a controlled 50 Ohm environment through the transition. The 500 mating cycles rating is a mechanical endurance figure — the gold-on-gold contact interface can handle repeated connect/disconnect cycles in test or reconfigurable systems without the plating wearing through. For a permanent install that is mated once, this is more than adequate. The snap-on fastening provides a positive retention force without threads — the limited detent feature means the connector will disengage under a defined axial pull force, which is intentional for blind-mate applications where a semi-permanent connection is wanted.
The closest sibling in the 73415 series is the 0734156181, which shares the same SMP plug, male pin, 50 Ohm impedance, 40 GHz frequency rating, and 335 V voltage rating. The key difference is the feature set: the 0734156181 includes a Pick and Place Cap, while the 0734156183 carries a Limited Detent feature. The Pick and Place Cap on the 6181 is a vacuum-pickup surface for automated pick-and-place assembly lines; the Limited Detent on the 6183 controls the axial retention force of the snap-on mating. If your assembly line uses automated placement, the 6181 is the direct fit. If you need the defined disengagement force of a limited-detent SMP interface, the 6183 is the one.