UHF connector is designed in World War II or earlier, and invented in the 1930s by Amphenol engineer Edward Clarke Quackenbush for use in the radio industry. The most popular cable plug and corresponding chassis-mount socket carry the old Signal Corps nomenclatures PL-259 (plug) and SO-239 (socket).
The UHF connector is a name for a threaded RF connector. UHF coax connectors reliably carry signals at frequencies up to 100 MHz with thread coupling. Widely used for Antennas, Military, Public Address Systems, Low-frequency applications, etc.
UHF connectors feature a threaded coupling. UHF connectors are economical and popularly used because of their ease of assembly. The UHF solderable screw-on termination feature requires no specialized crimping tools.
Interface
Application
Product Specification
RF Series
UHF Type
Connector Type
Plug
Orientation
Straight
Contact Type
Male Pin
Shield Termination
Clamp
Mounting Type
Cable Mount
Fastening Type
Threaded
Number of Ports
1
Impedance
50 ohm
Frequency - Max
300MHz
Shell Material
Copper Alloy
Shell Finish
Nickel Plated
Insulator Material
Teflon White
Contact Material
Brass
Contact Finish
Gold Plated
Insultation Resistance
5000MΩ Min
Mating Durability
≥ 500 cycles (For Beryllium Copper Contact)
Rated Voltage
500 Volts Peak
Temperature Range
-55°C to +85°C (Copolymer of styrene and polystyrene), -55°C to +149°C(Mica-filled phenolic insulators), -65°C to +165°C (TFE insulators)
RF Series
UHF Type
Connector Type
Plug
Orientation
Straight
Contact Type
Male Pin
Shield Termination
Clamp
Mounting Type
Cable Mount
Fastening Type
Threaded
Number of Ports
1
Impedance
50 ohm
Frequency - Max
300MHz
Shell Material
Copper Alloy
Shell Finish
Nickel Plated
Insulator Material
Teflon White
Contact Material
Brass
Contact Finish
Gold Plated
Insultation Resistance
5000MΩ Min
Mating Durability
≥ 500 cycles (For Beryllium Copper Contact)
Rated Voltage
500 Volts Peak
Temperature Range
-55°C to +85°C (Copolymer of styrene and polystyrene), -55°C to +149°C(Mica-filled phenolic insulators), -65°C to +165°C (TFE insulators)
RF Series
UHF Type
Connector Type
Plug
Orientation
Straight
Contact Type
Male Pin
Shield Termination
Clamp
Mounting Type
Cable Mount
Fastening Type
Threaded
Number of Ports
1
Impedance
50 ohm
Frequency - Max
300MHz
Shell Material
Copper Alloy
Shell Finish
Nickel Plated
Insulator Material
Teflon White
Contact Material
Brass
Contact Finish
Gold Plated
Insultation Resistance
5000MΩ Min
Mating Durability
≥ 500 cycles (For Beryllium Copper Contact)
Rated Voltage
500 Volts Peak
Temperature Range
-55°C to +85°C (Copolymer of styrene and polystyrene), -55°C to +149°C(Mica-filled phenolic insulators), -65°C to +165°C (TFE insulators)
Strip the cable: First, you will need to carefully strip away the outer insulation of the coaxial cable, exposing the shielded part of the wire.
Prepare the connector: Screw the back part of the connector onto the stripped cable
Solder the connector: Push the wire through the connector and solder it in place. After the solder cools down, screw the connector’s back and front parts together.
It’s essential to understand that UHF connectors, while versatile and useful, have limitations. Their physical size and impedance mismatch mean they’re unsuitable for high-frequency applications above 300 MHz. For frequencies higher than this, connectors such as BNC or N-type would be a better choice.
UHF Plug (Male): Also referred to as a PL-259, it’s the male version of the UHF connector. It is usually found on the ends of coaxial cables.
UHF Jack (Female): Known as the SO-239, the female connector is typically found on equipment such as radios and antennas.
UHF Adapter: These are used to connect two devices with incompatible connectors, or to change the gender of a connector.
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