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TNC
Coaxial
Connectors
95
TNC Coaxial Connectors
The Amphenol TNC connectors are made to a high quality level. Medium size coaxial connectors
with thread coupling. 50 ohm impedance for applications up to 11 GHz and 75 ohm impedance up
to 1 GHz. Cable entires full crimp or clamp type with soldered or crimp center contact.
75 Ohm Series
Within the internationally standardized TNC mating face dimensions, a perfect 75 ohm characte-
ristic impedance cannot be realized. However, at frequencies up to 1 GHz, the small impedance
deviation is negligible for practical applications. A typical SWR of 1.15:1 at 1 GHz is achieved.
All 75 ohm TNC connectors and 50 ohm TNC connectors are intermateable.
Material Specifications
Parts Name
Center
Male
Contact
Female
Metal parts
Insulators
Clamp gaskets
Crimp ferrule
Material
Brass
Phosphor Bronze (nominal) or
Beryllium Copper
Brass
Teflon, Delrin, PBT polyster
Sillicone 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
0-11 GHz
500 Volts rms.
1500 Volts rms.
1.3 max. 0-11 GHz
Center contact 1.5 milliohm
Outer contact 0.2 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 0.2 milliohm
5000 megohm (min)