50 Ohm SMP Receptacle, 30 GHz Ceiling
The Hirose SMP-PR(LD)-SMT-1 is a 50 Ohm SMP receptacle with a male pin contact, rated to 30 GHz. The SMP interface is the blind-mate standard for dense RF boards — this version uses a limited detent, which gives a lower mating force than full detent while still providing retention for moderate vibration environments. The 500-cycle mating life suits test and measurement or field-replaceable modules where the connector sees periodic reconnection. The surface-mount shield termination and contact termination are both solder, so the part reflows in a standard SMT line.
Limited Detent vs Full Detent — What 500 Cycles Buys
The SMP-PR(LD)-SMT-1 uses a limited detent, which means the retention spring has a shallower engagement than the full detent on the SMP-PR(FD)-SMT-1. The trade-off is mating force: limited detent slides on with less effort, making it the right call for modules that get swapped in the field or for board-to-board stacks where the connectors self-align. The full detent sibling locks harder but drops to 100 mating cycles — the limited detent here gives 500 cycles before the spring loses its grip. The smooth-bore SMP-PR(SB)-SMT-1 goes to 1000 cycles but has no detent retention at all, relying on the mating half's outer shell for axial hold. The choice between them is purely about how many mate-unmate cycles the system sees and how much retention force the application needs.