Amphenol's Mini-SMB 75 Ohm connector family provides broadband capability through 2 GHz. Its snap-on design offers a quick connect/disconnect and utilizes die cast components in non-critical areas to provide a low cost solution.

The Mini-SMB also features a reduced housing allowing circuit miniaturization and efficient space utilization. These connectors are built in accordance with requirements of Mil-C-39012 and the interface is in compliance with Mil-STD 348.


Related Products

Mini-SMB Adapters
Mini-SMB Cable Assemblies


Features and Benefits

  • 75 Ohm snap-on coupling allows for quick installation
  • Same interface as 50 Ohm SMB
  • Product interchangeable with competitors
  • Diecast components which offers low cost solution
  • Frequency range from 0-2 GHz


  • Telecom
  • Switching Equipment
  • Networking Systems

Mini-SMB Specifications

Impedance 75 Ohms
Frequency Range DC-2 GHz
   Straight DC-2 GHz 1.33 max
   Right Angle DC-2 GHz   1.43 max
Contact Resistance  
Center Contact ≤ 6 mΩ
Outer Contact ≤ 1 mΩ
Voltage Rating (Sea Level) ≥ 335 VRMS (depending on cable)
Insulation Resistance 1000 MΩ
Insertion Loss Maximum  
   Straight 1.5 GHz 0.30 dB
   Right Angle 1.5 GHz 0.60 dB
Dielectric Withstanding Voltage (Sea Level) 750 VRMS
RF Leakage 55 dB min @ 2GHz
Temperature Range -65⁰C to +165⁰C
Thermal Shock MIL-STD-202, Method 107, cond. B
Vibration MIL-STD-202, Method 101, cond. B
Mechanical Shock MIL-STD-202, Method 204, cond. D
Humidity MIL-STD-202, Method 213, cond. B
Mating Snap-on coupling (MIL-STD-348)
Cable Affixment (Braid/ Jacket) Hex Crimp
Cable Affixment (Center Conductor) Crimp or solder
Engagement Force ≤ 14 lbs (62N)
Disengagement Force ≥  2 lbs (9N)
Durability (Matings) 500 cycles min
These characteristics are typical and may not apply to all connectors.

Interface Dimensions