BNC Series



Table of contents

  BNC is the most popular coaxial connector. The special bayonet design ensures the user an easy mating/unmating connection.
  The working frequency is up to 4 GHz for 50 Ohm characteristic impedance.
  All 50 Ohm BNC connectors (standard) and 75 Ohm (add "-75" after part number) BNC connectors are intermateable.
  The application of BNC connectors are wide, such as monitor, LAN, telecommunication devices and test equipment. 

Plug interface

Jack interface

Click to see dimensions

Click to see dimensions



Brass, nickel plated

Center contact

Brass (male)/BeCu or PhBz (female), gold plated


Teflon, P.P., P.E., Delrin

Crimp ferrule

Annealed copper, nickel plated


Silicone rubber



50 Ohm

Frequency range

0 ~ 40 GHz

Working voltage

500V rms max
RG178 = 170V rms @sea level max
RG58 = 335V rms @sea level max
RG174, 188, 316 = 250V rms @sea level max

Insulation resistance

5000 MOhm min

Dielectric withstanding voltage

1500V rms min
RG178 = 500V rms min
RG58 = 1000V rms min
RG174, 188, 316 = 750V min

Contact resistance

Center contact: 1.5 mOhm max
Outer contact: 1.0 mOhm max


1.3 max

Insertion loss

0.2 dB max @3.0 GHz



Bayonet coupling

Coupling nut retention force

100 lbs min

Connector durability

500 matings

Cable retention force

RG178 = 17.3 lbs min
RG316 = 12.1 lbs min
RG58 = 28.7 lbs min


Corrosion (sail spray)

MIL-STD-202F, Method 101D, Condition B

Thermal shock

MIL-STD-202F, Method 1017G, Condition A


MIL-STD-202F, Method 204D, Condition B

Mechanical shock

MIL-STD-202F, Method 213B, Condition A

Alpha Center
351 Irving Drive, Oxnard, CA 93030, USA

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