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. 700-9650
Mfr. Part No.TMN0112U1-3G-05
BrandAmphenol
$8.20
Each
units
- - Right Angle PCB Mount - Gold over Nickel RG174/U, RG188 A/U, RG316/U - - - Copper Gold over Nickel -
RS Stock No. 144-0920
Mfr. Part No.132360
BrandAmphenol
$4.81
Each
units
SMA Male Straight - 50Ω Gold - 0 → 18GHz 2W - Brass Gold -
RS Stock No. 716-4987
Mfr. Part No.6500.19.A
$156.92
Each
units
SMA Male Straight - 50Ω White Bronze - 18GHz 0.75W - Beryllium Copper Gold -
RS Stock No. 193-8669
Mfr. Part No.J01152A00
$19.13
Each
units
SMA Male Straight - 50Ω - - 0 → 6GHz 1W - Beryllium Copper, Copper Zinc Lead Alloy White Bronze -
RS Stock No. 738-7521
Mfr. Part No.H01000A0131
$8.71
Each
units
Cable Female, Male Straight PCB Mount - - RG405/U, UT85 0 → 4GHz - - Brass Gold -
RS Stock No. 134-396
BrandITT Cannon
$24.82
1 Bag of 10
Bag(s)
Cable - Right Angle Through Hole 50Ω - - - - - - - -
RS Stock No. 112-3851
Mfr. Part No.J01006A0003
$19.91
Each
units
BNC - - - - - - - - - - - -
RS Stock No. 131-202
Mfr. Part No.996073
BrandDomocare
$5.41
Each
units
BNC Male Straight - 75Ω - - - 1W - Brass Gold -
RS Stock No. 738-7543
Mfr. Part No.H01000A0207
$9.81
Each
units
Cable Female Right Angle PCB Mount - - RG174/U, RG188 A/U, RG316/U 0 → 4GHz - - Brass Gold -
RS Stock No. 712-3119
Mfr. Part No.J01026A0010
$174.61
Each
units
N Male Straight - 50Ω Copper Nickel Alloy, White Bronze - 0 → 18GHz 2W - Copper, Lead, Nickel Alloy Copper, Silver Alloy -
RS Stock No. 712-3113
Mfr. Part No.J01026A0011
$219.47
Each
units
N Male Straight - 50Ω Copper Nickel Alloy, White Bronze - 0 → 18GHz 10W - Copper, Lead, Nickel Alloy Copper, Silver Alloy -
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