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
RS Stock No. 713-0899
Mfr. Part No.226176-4
SGD3.88
Each (In a Pack of 5)
units
- - - PCB Mount - - - - - - Brass -
RS Stock No. 277-9449
Mfr. Part No.3840-50
BrandFluke
SGD19.19
Each
units
BNC Male Straight - 50Ω - - 500MHz 0.5W - Brass Gold
RS Stock No. 112-3148
Mfr. Part No.J01006A1268
SGD9.23
Each
units
BNC Male Straight - 50Ω - - - 0.5W - - -
RS Stock No. 712-3119
Mfr. Part No.J01026A0010
SGD164.36
Each
units
N Male Straight - 50Ω Copper Nickel Alloy, White Bronze - 0 → 18GHz 2W - Copper, Lead, Nickel Alloy Copper, Silver Alloy
RS Stock No. 820-7791
Mfr. Part No.1-5221629-6
SGD21.52
Each
units
BNC Male Straight - 50Ω - - - 1W - Brass Gold
RS Stock No. 112-3154
Mfr. Part No.J01006A1269
SGD8.45
Each
units
BNC Male Straight - 75Ω - - - 0.5W - - -
RS Stock No. 716-5028
Mfr. Part No.65_SMB-50-0-1/111_NE
SGD84.68
Each
units
SMB Male Straight - 50Ω Gold over Nickel - 0 → 4GHz 0.5W - Beryllium Copper Gold over Nickel
RS Stock No. 125-0470
Mfr. Part No.J01006A0001
SGD6.31
Each
units
BNC Male Straight - 75Ω - - - 0.5W - - -
RS Stock No. 125-0325
Mfr. Part No.R404759000
BrandRadiall
SGD281.32
Each
units
Coaxial Female Straight - 50Ω Nickel - DC-6GHz 30W Yes Beryllium Copper Gold over Nickel
RS Stock No. 700-9650
Mfr. Part No.TMN0112U1-3G-05
SGD4.21
Each
units
- - Right Angle PCB Mount - Gold over Nickel RG174/U, RG188 A/U, RG316/U - - - Copper Gold over Nickel
RS Stock No. 738-7521
Mfr. Part No.H01000A0131
SGD8.97
Each
units
Cable Female, Male Straight PCB Mount - - RG405/U, UT85 0 → 4GHz - - Brass Gold
RS Stock No. 716-5012
Mfr. Part No.6550.17.AA
SGD467.55
Each
units
N Male Straight - 50Ω Anodized - 0 → 5GHz 25W - Brass Gold
RS Stock No. 716-4987
Mfr. Part No.6500.19.A
SGD173.90
Each
units
SMA Male Straight - 50Ω White Bronze - 18GHz 0.75W - Beryllium Copper Gold
RS Stock No. 193-8669
Mfr. Part No.J01152A0018
SGD20.66
Each
units
SMA Male Straight - 50Ω - - 0 → 6GHz 1W - Beryllium Copper, Copper Zinc Lead Alloy White Bronze
RS Stock No. 712-3282
Mfr. Part No.J01152A0011
SGD28.19
Each
units
SMA Male Straight - 50Ω Copper Nickel Gold Alloy - 0 → 6GHz 1W - Brass Copper, Gold Alloy, Nickel
RS Stock No. 773-7497
Mfr. Part No.APH-HDBNCP-T
SGD44.96
Each
units
BNC Male Straight - 75Ω - - 3GHz 1W - Beryllium Copper Gold
RS Stock No. 785-7761
Mfr. Part No.R404012000
BrandRadiall
SGD23.13
Each
units
BNC Male Straight Through Hole 75Ω - - 1GHz 1W - Brass Gold
RS Stock No. 125-0322
Mfr. Part No.R4041D1000
BrandRadiall
SGD82.36
Each
units
Coaxial Male Straight - 50Ω Nickel - DC-4GHz 2W Yes Beryllium Copper Gold over Nickel
RS Stock No. 125-0324
Mfr. Part No.R404758000
BrandRadiall
SGD254.93
Each
units
Coaxial Male Straight - 50Ω Nickel - DC-6GHz 30W Yes Beryllium Copper Gold over Nickel
RS Stock No. 700-9647
Mfr. Part No.TMN0111B2-3G-05
SGD3.88
Each
units
- - Straight PCB Mount - Gold over Nickel RG174/U, RG188 A/U, RG316/U - - - Copper Gold over Nickel