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. 546-4695
BrandRS PRO
$27.23
Each
units
BNC Female, Male Straight Through Hole 50Ω Silver - 0 → 0.5GHz 2W - Brass Gold -
RS Stock No. 546-4673
BrandRS PRO
$9.00
Each
units
BNC Male Straight - 50Ω Silver - 0 → 1GHz 0.5W - Brass Gold -
RS Stock No. 546-4128
BrandRS PRO
$5.80
Each
units
BNC Male Straight - 50Ω - - 1GHz 0.5W - Brass Gold -
RS Stock No. 546-4134
BrandRS PRO
$5.04
Each
units
BNC Male Straight - 75Ω Nickel - 0 → 1GHz 0.5W - Brass Gold -
RS Stock No. 546-4689
BrandRS PRO
$7.65
Each
units
BNC Male Straight - 75Ω Silver - 0 → 1GHz 0.5W - Brass Gold -
RS Stock No. 164-9309
Mfr. Part No.221629-4
$19.486
Each (In a Box of 100)
units
BNC Male Straight Cable Mount 50Ω - - - 1W - Brass Gold -
RS Stock No. 405-146
Mfr. Part No.221629-4
$17.86
Each
units
BNC Male Straight Cable Mount 50Ω - - - 1W - Brass Gold -
RS Stock No. 846-6691
Mfr. Part No.1-1337463-0
$9.24
Each
units
BNC Male Straight - 50Ω Silver - 0 → 1GHz 0.5W - Brass (Center Contact) Silver (Center Contact) -
RS Stock No. 161-6049
Mfr. Part No.1-1337463-0
$7.832
Each (In a Bag of 50)
units
BNC Male Straight - 50Ω - - 0 → 1GHz 0.5W - - - -
RS Stock No. 394-1077
Mfr. Part No.1-1337463-0
$9.24
Each
units
BNC Male Straight - 50Ω - - 0 → 1GHz 0.5W - - - -
RS Stock No. 168-0632
Mfr. Part No.1-1337463-0
$5,408.04
1 Box of 1000
Box(es)
BNC Male Straight - 50Ω Silver - 0 → 1GHz 0.5W - Brass (Center Contact) Silver (Center Contact) -
RS Stock No. 263-2716
Mfr. Part No.R404101000W
BrandRadiall
$9.14
Each
units
SMA Male Straight - 50Ω - - 0 → 4GHz 1W - - - -
RS Stock No. 170-2499
Mfr. Part No.B1004A1-ND3G-50R-0.01-1W
BrandAmphenol
$5.56
Each (In a Bag of 100)
units
BNC Male Straight - 50Ω Nickel over Copper - - - - Brass Gold over Nickel -
RS Stock No. 700-9313
Mfr. Part No.B1004A1-ND3G-50R-0.01-1W
BrandAmphenol
$9.09
Each
units
BNC Male Straight - 50Ω Nickel over Copper - - - - Brass Gold over Nickel -
RS Stock No. 821-2567
Mfr. Part No.221629-1
$24.25
Each
units
BNC Male Straight - 50Ω - - - - - Brass Gold -
RS Stock No. 168-0617
Mfr. Part No.1-1337523-0
$5.94
1 Bag of 1
Bag(s)
BNC Male Straight - 50Ω - - 0 → 1GHz 0.5W - - - -
RS Stock No. 131-246
Mfr. Part No.996074
BrandDomocare
$5.56
Each
units
BNC Male Straight - 50Ω - - - 1W - Brass Gold -
RS Stock No. 716-5016
Mfr. Part No.65_BNC-50-0-2/133_NE
$66.78
Each
units
BNC Male Straight Cable Mount 50Ω White Bronze - 0 → 2GHz 1W Yes Brass Gold over Nickel -
RS Stock No. 163-8325
Mfr. Part No.1400895-1
$1,276.00
1 Bag of 1000
Bag(s)
BNC Plug to BNC Socket - - Panel Mount - - - - - - Brass Silver -
RS Stock No. 112-3665
Mfr. Part No.80.5420.017
BrandIMS
$9.96
Each
units
- - Right Angle PCB Mount - - - - - - - - -
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