SMP Connectors

SMP Connectors

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, limited, and smooth bore, provide respective levels of engagement/disengagement forces. This family of interconnects addresses small 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 adapter. 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.

Learn More: SMP Product Series Solution Guide

Features and Benefits
  • Designed to accommodate both radial and axial misalignment
  • Push-on and snap-on mating styles for quick installation
  • Designs available for board-to-board and cable-to-board configurations
  • Antennas
  • Broadband
  • Military
  • Instrumentation
  • Medical
  • Quantum Computing

SMP Connectors Specifications


Impedance 50 Ohm
Frequency Range DC - 26.5 GHz (DC - 40 GHz on Extended Range Designs)
Voltage Rating 335 Volts RMS Max Continuous
Dielectric Withstanding Voltage 500 VRMS Min
VSWR  (Return Loss)  
     DC - 18 GHz 1.2 (-21 dB) Max
     18 - 26.5 GHz 1.3 (-18 dB) Max
     26.5 - 40 GHz 1.7 (-12 dB) Max
Insulation Resistance  5000 MΩ Min
Center Contact Resistance 6 mΩ Max
Outer Contact Resistance 2 mΩ Max
RF Leakage -85 dB Max (DC - 4 GHz)
Insertion Loss .1 √(f(GHz)) dB Max
Power Handling 32 W @ 1 GHz @ 25ºC


Temperature Range −65°C to +165°C
Thermal Shock MIL-STD-202, Method 107, Condition C
Corrosion MIL-STD-202 Method 101 (Test Condition B) - 5% Salt Solution
Vibration MIL-STD-202, Method 204, Condition B
Mechanical Shock MIL-STD-202, Method 213, Condition B
Moisture Resistance MIL-STD-202, Method 106, Condition D


Mating Cycles 100 Min
Coupling Mechanism Push-On
Interface Specification MIL-STD-348
Engagement Force ≤ 15.0 lbs (40 N)
Disengagement Force ≤0.5 lbs (2N)
Mechanical Misalignment  
     Axial 0.25 mm
     Radial 0.51 mm
     Min Board to Board Distance 9.1 mm
Note: These characteristics are typical and may not apply to all connectors.
Connector configurations may affect performance.