SMPM Jack for Dense RF Board Stacks
The 925-144J-51PT: SMPM is the miniature sibling of SMP — smaller footprint, same blind-mate snap-on interface, and rated for 100 mating cycles. The smooth bore feature means the outer contact has no detent, so the mating force is lighter and the connector is intended for applications where the plug slides in without a positive lock click. Gold body and gold centre contact plating keep the signal path corrosion-resistant through the 10 GHz bandwidth.
What the 10 GHz and 50 Ohm Ratings Mean for Your RF Path
The 10 GHz frequency max means this jack will pass signals up to 10 GHz with acceptable return loss; above that, the interface geometry starts to limit performance. The smooth bore design, combined with the liquid crystal polymer (LCP) dielectric, keeps the impedance consistent through the transition from the board trace to the connector. For a 10 GHz link, the board launch footprint and the solder joint quality matter as much as the connector itself.
Surface Mount Termination and Assembly
Both the shield and the centre contact terminate by solder to the PCB — no through-hole posts. That makes this jack compatible with standard reflow soldering processes. The gold body and brass centre contact material handle the thermal cycle of reflow without issue.
Smooth Bore vs Full Detent: Which Sibling Fits Your Mate
The 925-144J-51PT is a smooth bore jack — the outer contact has no internal detent ring, so the mating plug slides in with a lower insertion force and no positive retention click. If you need a positive lock feel and higher retention force, the sibling 925-143J-51P is the same SMPM jack but with a full detent feature. Both are 50 Ohm, both rated to 40 GHz (the 925-143J-51P), but the detent changes the mating cycle feel and the axial pull-off force. The 925-144J-51P is the bulk-packaged version of this same smooth bore jack, identical electrically.