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. 112-3154
Mfr. Part No.J01006A1269
$10.79
Each
units
BNC Male Straight - 75Ω - - - 0.5W - - - -
RS Stock No. 263-2750
Mfr. Part No.R404131000W
BrandRadiall
$19.56
Each
units
- Male Straight - 50Ω Nickel - 0 → 4GHz - - Brass Gold over Nickel -
RS Stock No. 170-2500
Mfr. Part No.B1004A1-ND3G-75R-0.01-1W
BrandAmphenol
$3.718
Each (In a Bag of 100)
units
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
$95.63
Each
units
SMB Female Straight - 50Ω Gold over Nickel - 0 → 4GHz 0.5W - Brass Gold -
RS Stock No. 700-9316
Mfr. Part No.B1004A1-ND3G-75R-0.01-1W
BrandAmphenol
$3.64
Each
units
BNC Male Straight - 75Ω Nickel over Copper - - - - Brass Gold over Nickel -
RS Stock No. 125-0325
Mfr. Part No.R404759000
BrandRadiall
$311.73
Each
units
Coaxial Female Straight - 50Ω Nickel - DC-6GHz 30W Yes Beryllium Copper Gold over Nickel -
RS Stock No. 125-0323
Mfr. Part No.R4041D2000
BrandRadiall
$85.33
Each
units
Coaxial Male Straight - 50Ω Nickel - DC-4GHz 2W Yes Beryllium Copper Gold over Nickel -
RS Stock No. 394-1083
Mfr. Part No.1-1337470-0
$29.33
Each
units
BNC Male Straight Cable Mount 75Ω Gold - 0 → 1GHz - - Brass Gold -
RS Stock No. 700-9641
Mfr. Part No.TMN0111T1-3G-14
BrandAmphenol
$2.34
Each
units
- - Straight PCB Mount - Gold RG178 B/U, RG196 A/U - - - - - -
RS Stock No. 716-4984
Mfr. Part No.65_BNC-50-0-7/133_NE
$26.05
Each
units
BNC Male Straight - 50Ω White Bronze - 0 → 1GHz 1W - Brass Gold over Nickel -
New
RS Stock No. 404-5372
Mfr. Part No.090-0510
BrandYuetsu
$20.77
Each
units
BNC Plug to BNC Socket - Straight Cable Mount 50Ω - - 0 → 600MHz 0.5W - Brass Gold -
New
RS Stock No. 404-5394
Mfr. Part No.090-0520
BrandYuetsu
$32.72
Each
units
BNC Plug to BNC Socket - Straight Cable Mount 75Ω - - 0 → 0.6GHz 0.5W - Brass Gold -
RS Stock No. 886-0403
Mfr. Part No.26-8023
$10.12
Each
units
N Male Straight - 50Ω Nickel - 0 → 11GHz - - Brass Nickel -
New
RS Stock No. 404-5580
Mfr. Part No.090-0210
BrandYuetsu
$41.49
Each
units
- Male Straight - 50Ω - - 0 → 4GHz 1W - Brass Gold -
RS Stock No. 164-9077
Mfr. Part No.1-1337470-0
$24.013
Each (In a Box of 50)
units
BNC Male Straight Cable Mount 75Ω Gold - 0 → 1GHz - - Brass Gold -
RS Stock No. 716-5012
Mfr. Part No.6550.17.AA
$358.51
Each
units
N Male Straight - 50Ω Anodized - 0 → 5GHz 25W - Brass Gold -
New
RS Stock No. 184-6533
Mfr. Part No.UM-LR-PC(40)
BrandHirose
$28.38
Each
units
- - - - - - - - - - - - -
RS Stock No. 712-3286
Mfr. Part No.J01152B0011
$31.31
Each
units
SMA Male Straight - 50Ω Copper Nickel Gold Alloy - 0 → 18GHz 1W - Brass, Lead Alloy Copper, Gold Alloy, Nickel -
RS Stock No. 263-2766
Mfr. Part No.R404240000
BrandRadiall
$130.31
Each
units
N Male Straight - 50Ω - - 0 → 12.4GHz 1W - - - -
RS Stock No. 134-396
BrandITT Cannon
$24.82
1 Bag of 10
Bag(s)
Cable - Right Angle Through Hole 50Ω - - - - - - - -
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