The SMP interface is a subminiature interface in the same scale as MMCX connectors but offers a frequency range of DC to 40 GHz. It is commonly used in miniaturized high frequency coaxial modules and is offered in both push-on and snap-on mating styles.

The available detent systems, full and limited, provide respective levels of engagement/disengagement forces. This family of interconnects addresses all package design needs. It can be utilized as a highly shielded interconnect for high data rate applications or in a board-to-board system using a floating bullet. This floating bullet provides a link between mated pairs compensating for both radial and axial misalignment.

Available in a cable-to-board mated pair, the plug side can be provided in either right angle or straight with termination capability to either 0.047” or 0.086”, semi-rigid or conformable coax. The receptacles are designed for surface, through hole, or end launch mounting.

Related Products

SMP Bullets

SMP Cable Assemblies

Features and Benefits

  • RF performance DC to 40 GHz
  • Designed to accommodate both radial and axial misalignment
  • Push-on and snap-on mating styles for quick installation


  • Antennas
  • Broadband
  • Military
  • Instrumentation

SMP Specifications

Impedance 50 Ohm
Frequency Range DC-26.5 GHz extended performance to 40 GHz
DC-18 GHz 1.2 max
18-26.5 GHz 1.3 max
26.5-40 GHz 1.7 max
Contact Resistance  
Center Contact ≤6 mΩ
Outer Contact ≤2 mΩ
Voltage Rating (Sea Level) ≥ 500 VRMS (depending on cable)
Insulation Resistance 5000 MΩ min
Temperature Range -65⁰C to +165⁰C
Thermal Shock MIL-STD-202, Method 107, cond. C
Vibration MIL-STD-202, Method 204, cond. B
Mechanical Shock MIL-STD-202, Method 213, cond. B
Humidity MIL-STD-202, Method 106, cond. D
Mating MIL-STD-348
Engagment Force ≤ 15.0 lbs (40 N)
Disengagment Force ≤0.5 lbs (2N)
Durability (Matings) 100 cycles min

Interface Dimensions