BNC
Coaxial
Connectors
67
BNC Coaxial Connectors
The Amphenol BNC connectors are made to high quality level. Medium size coaxial connectors with
bayonet lock. 50 ohm impedance for applications up to 4 GHz and 75 ohm impedance up to 2 GHz.
75 Ohm Series
Within the internationally standardized BNC mating face dimensions, a perfect 75 ohm characteristic
impedance cannot be realized. However, at frequencies up to 1000 MHz, the small impedance
deviation is negligible for practical applications. Amphenol true 75 ohm connectors with a typical
VSWR reading of 1.06:1 at 2000 MHz are identified by an asterisk following the part number.
All 75 ohm BNC connectors and 50 ohm BNC connectors are intermateable without restrictions.
Material Specifications
Parts Name
Center
Male
Contact
Female
Metal parts
Insulators
Clamp gaskets
Crimp ferrule
Material
Brass
Phosphor Bronze (nominal) or
Bryllium Copper
Brass
Teflon, Delrin, PBT polyester
Silicone rubber, Synthetic rubber
Annealed copper
Finish
Gold or Silver plated
Nickel
None
Nickel
Electrical Specifications
Impedance
Frequency Range
Working Voltage
Dielectric Withstanding Voltage
VSWR
Contact Resistance
Insulation Resistance
50 ohm
0-4 GHz
500 Volts rms.
1500 Volts rms.
1.3 max. 0-4 GHz
Center contact 1.5 milliohm
Outer contact 1.0 milliohm
5000 megohm (min)
75 ohm
0-1 Ghz
500 Volts rms.
1500 Volts rms.
1.05+0.1f(GHz) DC to 1 GHz
Center contact 1.5 milliohm
Outer contact 1.0 milliohm
5000 megohm (min)