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 486-7172
製造零件編號534B1104JC8872
BrandVishay
HK$206.73
單位
100 kΩ Rotary 10 1 Panel Mount 2W 6 mm Linear - Wirewound Solder Lug ±5% 534 20.6mm
RS庫存編號 173-0745
BrandRS PRO
HK$38.52
個 (以毎盒:50)
單位
25 kΩ - 1 - Panel Mount 1W 6 mm - - Wirewound Solder ±10% P25 25mm
RS庫存編號 167-3589
製造零件編號3590S-2-104L
BrandBourns
HK$128.70
Each (In a Tray of 25)
單位
100 kΩ Rotary 10 1 Panel Mount 2W 6.35 mm Linear - Wirewound Solder Lug ±5% 3590 20.6mm
RS庫存編號 626-8410
製造零件編號3590S-2-104L
BrandBourns
HK$54.64
單位
- - - - - - - - - - - - 3590S -
RS庫存編號 502-8621
製造零件編號TW1502KA
HK$85.17
單位
5 kΩ Rotary 1 1 Panel Mount 1W 6.35 mm Linear - Wirewound Solder Lug ±10% TW 15mm
RS庫存編號 172-8114
製造零件編號RS6011Y1401A
HK$26.79
Each (In a Tray of 90)
單位
50 kΩ Slide 1 - Through Hole 0.2W - Linear - - Pin ±20% RS60 -
RS庫存編號 263-3270
製造零件編號RSA0N11S9002
HK$30.87
單位
10 kΩ Slide 1 - Through Hole 0.5W - Linear - - Pin ±20% RSA0N -
RS庫存編號 743-5677
製造零件編號981HE0B4WA8H01
BrandVishay
HK$223.13
單位
- - - - Panel Mount - 6.35 mm - - - - - 981 HE -
RS庫存編號 522-3028
製造零件編號3540S-1-502L
BrandBourns
HK$143.43
單位
5 kΩ Rotary 10 1 Panel Mount 2W 6.35 mm Linear - Wirewound Solder Lug ±5% 3540 20.6mm
RS庫存編號 831-8810
製造零件編號53C3500K
BrandHoneywell
HK$62.11
單位
500 kΩ Rotary - 1 Panel Mount 2W 6.35 mm Linear - Conductive Plastic Solder Lug ±10% 53C 22.2mm
RS庫存編號 827-5035
製造零件編號PTD901-2015K-B103
BrandBourns
HK$11.97
單位
10 kΩ Rotary - 1 - 0.05W 6 mm Linear - Carbon PC Pin ±25% PTD90 15mm
RS庫存編號 167-9576
製造零件編號534B1104JC8872
BrandVishay
HK$206.73
個 (以毎盒:10)
單位
100 kΩ Rotary 10 1 Panel Mount 2W 6 mm Linear - Wirewound Solder Lug ±5% 534 20.6mm
RS庫存編號 484-9219
製造零件編號14921F0GJSX13502KA
BrandVishay
HK$208.76
單位
5 kΩ Rotary 1 2 Panel Mount, Through Hole 1W 6.35 mm Linear - Cermet Pin ±10% 149 22.2mm
RS庫存編號 167-5464
製造零件編號3543S-1-502L
BrandBourns
HK$451.888
Each (In a Tray of 25)
單位
5 kΩ Rotary 1 1 Panel Mount 1W 6.35 mm Linear - Wirewound Solder Lug ±5% 3543 20.6mm
RS庫存編號 842-7074
BrandRS PRO
HK$32.83
單位
50 Ω Rotary 1 1 Panel Mount 1W 6.35 mm Linear - Wirewound Solder ±10% P25 25mm
RS庫存編號 167-9345
製造零件編號860B1102
BrandVishay
HK$1,022.48
個 (以毎盒:10)
單位
1 kΩ Rotary 10 1 Panel Mount 8W 6.35 mm Linear - Wirewound Solder Lug ±1% 860 20.6mm
RS庫存編號 522-3012
製造零件編號3540S-1-501L
BrandBourns
HK$167.25
單位
500 Ω Rotary 10 1 Panel Mount 2W 6.35 mm Linear - Wirewound Solder Lug ±5% 3540 20.6mm
RS庫存編號 167-9346
製造零件編號860B1202
BrandVishay
HK$1,124.56
個 (以毎盒:10)
單位
2 kΩ Rotary 10 1 Panel Mount 8W 6.35 mm Linear - Wirewound Solder Lug ±1% 860 20.6mm
RS庫存編號 770-3078
製造零件編號PDB183-GTR01-504A2
BrandBourns
HK$33.59
單位
500 kΩ Rotary - 1 Panel Mount 0.1W 6 mm Audio - Carbon Solder Lug ±20% PDB183-GTR 19mm
RS庫存編號 172-7566
製造零件編號RK09D1130A1N
HK$4.18
個 (以毎盒:1000)
單位
10 kΩ Rotary 1 - Through Hole 0.05W 6 mm Linear - - Pin ±20% RK09D -