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Samtec Released its Line of Spring-loaded SMPM Adaptors

November 23, 2023
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Samtec has fully released its line of spring-loaded SMPM adaptors (also known as bullets or bullet adaptors), for SMPM axial misalignment.

They are part of our PRFIA in-series adaptor family. Spring-loaded bullet adaptors are designated with a -SP in the part number configuration. You also have your choice of lengths, designated with either a –SP1 or –SP2:

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Spring-loaded bullet adaptors are designed to accommodate larger axial misalignment in RF board-to-board connector applications than traditional fixed-length bullets. The spring maintains constant signal contact therefore ensuring consistent electrical performance up to 65 GHz.

In applications with greater than .010″ axial misalignment, a typical fixed-length adaptor will inherently introduce a gap in the mating interface which has a detrimental effect on return loss. Instead, by selecting a spring-loaded bullet adaptor for high-density applications the gap is eliminated.

Due to the ability to absorb axial misalignment, spring-loaded SMPM bullet adaptors are most often found in ganged high-density board-to-board applications where multiple channels are required.

Applications include high-density arrays, phased arrays, satellite communication systems, military, aerospace, and test and measurement.

PRFIA Series spring-loaded SMPM bullet adaptors mate with single-channel SMPM interconnects but more often are used with ganged Magnum RF™ blocks (GPPB & GPPC Series).

Another advantage of push-on bullet adaptors (both fixed-length and spring-loaded) is that they accommodate radial misalignment. Radial misalignment is when centerlines are off-center, which often occurs in blind mate applications.

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Source: Samtec
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