RF Terminators

RF terminators are devices used to electrically terminate coaxial RF (radio frequency) ports. They are usually placed at the end of the transmission line to prevent an RF signal from being reflected.

RF terminators are designed to match the surge impedance (ratio of current and voltage) of the cable to help minimise signal reflections and power losses. Unused tap ports or coaxial faceplates in a home, for example, can create entry and exit paths, which affect performance.

How do RF terminators work?

RF terminators absorb the electrical energy of the signal as it reaches the cable ends and prevents the signal from being reflected so it doesn’t become noise. They ensure that current flows smoothly from one device to another.

What are RF terminators used for?

RF terminators play a critical role in high-frequency systems and circuits, especially when managing high-power signals. They can also be used to close open terminations that might otherwise allow parasitic signals to enter the circuit, such as at a T-junction.

RF terminators are available in many form factors with power ratings to match their sizes.

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Description Price Interface Type Gender Body Orientation Mounting Type Impedance Body Plating Cable Type Operating Frequency Average Power Rating Low Power Contact Material Contact Plating Termination Method
RS Stock No. 819-4197
Mfr. Part No.32S15R-1,0E3
SMA Male Straight - 50Ω - - 0 → 18GHz 1W - Brass Gold -
RS Stock No. 700-9650
Mfr. Part No.TMN0112U1-3G-05
- - Right Angle PCB Mount - Gold over Nickel RG174/U, RG188 A/U, RG316/U - - - Copper Gold over Nickel -
RS Stock No. 164-0780
Mfr. Part No.226176-4
Each (In a Box of 500)
- - - PCB Mount - - RG174, RG316 - - - Brass - -
RS Stock No. 886-0403
Mfr. Part No.26-8023
N Male Straight - 50Ω Nickel - 0 → 11GHz - - Brass Nickel -
RS Stock No. 700-9316
Mfr. Part No.B1004A1-ND3G-75R-0.01-1W
BNC Male Straight - 75Ω Nickel over Copper - - - - Brass Gold over Nickel -
RS Stock No. 716-5034
Mfr. Part No.65_SMB-50-0-31/111_NE
SMB Female Straight - 50Ω Gold over Nickel - 0 → 4GHz 0.5W - Brass Gold -
RS Stock No. 693-2934
Mfr. Part No.SF8018-6005
SMA Male Straight - 50Ω - - 0 → 18GHz 1W - Beryllium Copper Gold -