SMKey 3.7 mm Coax Connectors
DC to 18 GHz

SMKey Coax Connectors

SMKey high-security keyed coax connectors provide a failsafe mating solution for critical connections between mated connector pairs. This new range of connectors are offered in 10 keyed combinations, each with uniquely polarized key positions. Each connector also includes one non-keyed (Universal) option.


By assigning differing key positions for mating pairs within a set, SMKey eliminates the risk of interconnect mismatch, ensuring reliable protection against the potential for operator error and preventing devastating results in connection-critical applications.


The SMKey product suite includes two field-replaceable keyed .500 square, four-hole flange jack connectors, including a right-angle flange jack, which both accept a 36-mil diameter launch pin. A keyed .625 x .350 two-hole flange jack that accepts a 15-mil diameter pin is also available, along with a keyed direct solder cable connector plug, configured for .141 flex cable.

  • Rugged and durable
  • 360° raised grounding ring
  • Well-matched impedance
  • Excellent repeatability
  • The industry‚Äôs lowest VSWR, insertion loss and RF leakage

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