Potentiometers

A potentiometer is a variable resistor. Potentiometers enable you to regulate and change the current flowing through a circuit. Potentiometers can also be called pots or potmeters.


Potentiometers have two terminals that are fixed to a resistive element (the track). The resistive element is typically wirewound or made from carbon, cermet or conductive plastic. The third terminal is connected to the wiper, which is a sliding contact. As the wiper moves along the track, the resistance changes and the current flowing through the circuit changes.


Types of potentiometer


  • Rotary potentiometers are easily controlled by turning a spindle or a knob. Rotary potentiometers can be single turn or multiturn.

  • Slide potentiometers are also known as slider potentiometers or fader potentiometers. To use a slide potentiometer, it’s simply a case of sliding a fader along a straight track to change the resistance.

  • Trimmer potentiometers, sometimes called trimpots, are used to calibrate and fine-tune circuits and can be mounted straight onto a PCB (printed circuit board). Trimmer potentiometers are easy to adjust with a screwdriver.

  • String potentiometers (or string pots) take movement and transform it into an electrical signal.

  • Membrane potentiometers are completely flat. Membrane potentiometers change their resistance when pressure is applied to the membrane.

For potentiometers with a linear taper, the resistance between one end of the track and the wiper varies at a constant rate. If you turn the potentiometer halfway or slide the fader halfway along the track, the resistance will be half of the total resistance. Linear taper potentiometers are typically used in applications such as light dimmer switches.


For logarithmic taper potentiometers, the resistance does not vary at a constant rate. The level of resistance moves exponentially up or down. A potentiometer that has been turned or moved halfway along its track, will not produce resistance that is half the total resistance. Logarithmic potentiometers are commonly used for audio applications.


Need ’Digital Potentiometers’?


Digital Potentiometers

Looking for peripherals for your potentiometer?


Potentiometer Knobs


Potentiometer Accessories


Potentiometer Mounting Nuts


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Description Price Maximum Resistance Potentiometer Type Number of Turns Number of Gangs Mounting Type Power Rating Shaft Diameter Electrical Taper Mounting Hole Diameter Element Material Termination Style Tolerance Series Shaft Length
RS庫存編號 486-7150
製造零件編號534B1502JC8872
BrandVishay
HK$144.46
單位
5 kΩ Rotary 10 1 Panel Mount 2W 6 mm Linear - Wirewound Solder Lug ±5% 534 20.6mm
RS庫存編號 167-9571
製造零件編號534B1202JC8872
BrandVishay
HK$123.70
個 (以毎盒:10)
單位
2 kΩ Rotary 10 1 Panel Mount 2W 6 mm Linear - Wirewound Solder Lug ±5% 534 20.6mm
RS庫存編號 729-3606
製造零件編號RK09K1130A70
HK$4.88
單位
10 kΩ Rotary 1 1 Through Hole 0.05W 6 mm Linear - - Pin ±20% RK09K 30mm
RS庫存編號 502-8643
製造零件編號TW1253KA
HK$83.93
單位
25 kΩ Rotary 1 1 Panel Mount 1W 6.35 mm Linear - Wirewound Solder Lug ±10% TW 15mm
RS庫存編號 172-6430
製造零件編號RK27112MC01P
HK$226.876
Each (In a Tray of 15)
單位
50 kΩ Rotary 1 - Panel Mount, Through Hole 0.05W 6 mm Logarithmic - Carbon Pin ±20% RK27 20mm
RS庫存編號 154-8178
製造零件編號RK11K1140A3L
HK$8.04
個 (以毎袋:5)
單位
- Rotary 1 1 Through Hole 0.05W 6 mm Linear - - Solder ±20% RK11K 27.5mm
RS庫存編號 263-3258
製造零件編號RK27112A00A6
HK$140.75
單位
20 kΩ Rotary 1 - Panel Mount, Through Hole 0.05W 6 mm Logarithmic - - Pin ±20% RK27 -
RS庫存編號 234-6617
製造零件編號RK27112MC01P
HK$166.85
單位
50 kΩ Rotary 1 - Panel Mount, Through Hole 0.05W 6 mm Logarithmic - Carbon Pin ±20% RK27 20mm
RS庫存編號 136-1812
製造零件編號TW1253KA
HK$61.10
個 (以毎盒:500)
單位
25 kΩ Rotary 1 1 Panel Mount 1W 6.35 mm Linear - Wirewound Solder Lug ±10% TW 15mm
RS庫存編號 263-3191
製造零件編號RK11K1140A3L
HK$7.60
單位
10 kΩ Rotary 1 1 Through Hole 0.05W 6 mm Linear - Carbon Pin ±20% RK11K 27.5mm
RS庫存編號 172-8006
製造零件編號RK09K1130A70
HK$5.177
個 (以毎盒:1000)
單位
10 kΩ Rotary 1 - Through Hole 0.05W 6 mm Linear - - Pin ±20% RK09K -
RS庫存編號 172-8149
製造零件編號RK27112A00A6
HK$94.33
個 (以毎盒:500)
單位
20 kΩ Rotary 1 - Panel Mount, Through Hole 0.05W 6 mm Logarithmic - - Pin ±20% RK27 -
RS庫存編號 729-3436
製造零件編號RK09L12B0A31
HK$11.89
單位
50 kΩ Rotary 1 2 Through Hole 0.05W 6 mm Logarithmic - - Pin ±20% RK09L 15mm
RS庫存編號 172-8078
製造零件編號RK09L114001T
HK$9.67
Each (In a Tray of 100)
單位
10 kΩ Rotary 1 - Panel Mount, Through Hole 0.05W 6 mm Linear - - Pin ±20% RK09L -
RS庫存編號 790-4448
製造零件編號PE30L0FL104KAB
BrandVishay
HK$157.60
單位
100 kΩ Rotary 1 1 Panel Mount 0.9W 6 mm Linear - Cermet Solder Lug ±10% PE30 25mm
RS庫存編號 692-8639
製造零件編號PDB241-GTR01-504A2
BrandBourns
HK$28.08
單位
500 kΩ Rotary 1 1 Panel Mount 0.25W 6 mm Audio - Carbon Solder Lug ±20% PDB241-GTR 19mm
RS庫存編號 172-8106
製造零件編號RK09712200JB
HK$20.83
Each (In a Tray of 80)
單位
10 kΩ Rotary 1 - Panel Mount, Through Hole 0.05W 6 mm Logarithmic - - Pin ±20% RK097 -
RS庫存編號 729-3521
製造零件編號RK0971221Z05
HK$34.81
單位
10 kΩ Rotary 1 2 Through Hole 0.05W 6 mm - - - Pin ±20% RK097 15mm
RS庫存編號 167-4683
製造零件編號PDB241-GTR01-504A2
BrandBourns
HK$22.42
個 (以毎袋:100)
單位
500 kΩ Rotary 1 1 Panel Mount 0.25W 6 mm Audio - Carbon Solder Lug ±20% PDB241-GTR 19mm
RS庫存編號 729-3426
製造零件編號RK09L114001T
HK$11.38
單位
10 kΩ Rotary 1 1 Through Hole 0.05W 6 mm Linear - - Pin ±20% RK09L 20mm