The Mini BNC connector series offers the high performance and wide compatibility of the original Amphenol 75 Ω BNCs. However, the Mini-BNC has a higher connector density. Specifically, 40% more interconnects in the same area.

Furthermore, the Mini BNC series expands on the SMB and SMZ system. Mini BNCs provide a positive locking bayonet system whereas SMB and SMZ have no locking feature. In addition, the Mini BNC is specifically designed to be a drop-in replacement and used with the Telco DS3 application.

The Mini BNC is compatible with the present field installer tooling and strip dimensions.


Features and Benefits

  • Crimp/Crimp design compatible with Trompeter tooling
  • Same standard installation tooling using the best-in-class Telco DSC cable terminations assignment
  • Same foot print on the jack side, making the Mini BNC a drop-in replacement for most high-density applications using SMB or SMZ jacks
  • 75 Ω allowing room for movement up the frequency chain while matching impedance
  • Bayonet locking coupling mechanism


  • Antennas
  • Medical Equipment
  • Automotive (GPS)
  • Computers/LANs
  • Mil-Aero
  • Base Stations
  • Cable Modems
  • Instrumentation
  • Network Analyzers
  • Telecom

Mini-BNC Specifications

Impedance 75 Ohms
Frequency Range DC-4 GHz (acceptable return loss up to 1 GHz)
Return Loss  
   DC-750 Hz 26.4 dB
   DC-1 GHz 22.6 dB
   DC-750 Hz 1.10 max
   DC-1 GHz 1.16 max
Insertion Loss Max 0.10 dB max @ 1 GHz
Insulation Resistance

5000 MΩ

Contact Resistance (center contact) ≤ 12 mΩ
Dielectric Withstanding Voltage (Sea Level) 1000 VRMS 
Voltage Rating (Sea Level) ≤ 500 V peak (depending on cable)
Temperature Range -45⁰C to +85⁰C
Thermal Shock MIL-STD-202, Method 108, cond. D
Moisture Resistance EIA-364-31, Method II, cond. C
Corrosion MIL-STD-1344, Method 1001, cond. B
Vibration MIL-STD-1344, Method 1001
Mechanical Shock MIL-STD-1344, Method 2004, cond. D
Humidity MIL-STD-1344, Method 1002, cond. C
Mating 2 stud bayonet lock coupling
Attachment Method  
   Inner Crimp
   Outer Clamp
Center Contact Retention Force ≥ 6 lbs (27 N)
Cable Affixment (Braid/Jacket) Hex crimp
Cable Affixment (Center Contact) Crimp or solder
Engagement Force ≤ 5 lbs (22 N)
Disengagement Force ≥ 1.5 lbs (7N)
Durability (Matings) 500 cycles min

Interface Dimensions