The MCX (Micro Coaxial) series is a 50 Ω series with broadband capability ranging from DC to 6 GHz. In addition, the MCX series features secure, fast and easy snap-on/ snap-off coupling. MCX connectors were introduced in the 1980s and conform to the European CECC 22220 spec.

This series provides designers with options where weight and physical space are limited. While the MCX uses identical inner contact and insulator dimensions as the SMB, the outer diameter of the plug is .140 inches, which is 30% smaller than the SMB.

A range of connectors are available, including printed circuit board and cable connectors.

Related Products

MCX Adapters

Features and Benefits

  • Broadband performance with low reflection DC to 6 GHz. Low cost combined with high quality
  • Quick connect/disconnect snap-on mating reduces installation time
  • Accommodates a wide range of miniature RG flexible coaxial cables, including semi-rigid cable providing customers flexibility in their design and manufacturing


  • WLAN
  • GPS
  • PC/LAN
  • Automotive
  • Base Station
  • Head End Equipment
  • Radios
  • Wireless/ Networks Antenna
  • Instrumentation
  • Telecom

MCX Specifications

Impedance 50 Ohm
Frequency Range 0 to 6 GHz
Voltage Rating 225 VRMS
Dielectric Withstanding Voltage  1000 Volts
  2.5GHz (straight) 1.00
  2.5GHz (right angle) 1.10
Insertion Loss  
  1GHz 0.10 dB 
Insulation Resistance 5000 MΩ min
Contact Resistance  
  Center Contact 5 mΩ
  Outer Contact 1.0 mΩ
Temperature Range -65⁰C to +165⁰C
Thermal Shock MIL-STD-202, Method 107 (test cond. B) except high temperatures @ 200⁰C
Corrosion MIL-STD-202, Method 101 (test cond. B) 5% salt solution
Vibration MIL-STD-202, Method 204, snap on (test cond. B) 
Shock MIL-STD-202, Method 213, snap on (test cond. B) 
Engagement Force 4.5 lbs (20N) max
Disengagement Force 2.3 lbs (10N) min
Contact Captivation All types, except as noted
Connector Durability 500 mating and unmating cycles min.
Connector Affixment to Cable Braid and jacket; hex crimp
Cable Affixment to Center Contact Solder

Interface Dimensions