Trimmer Resistors

What are trimmer potentiometers?

Trimmer potentiometers, sometimes referred to as trim pots or trimmer resistors are a type of adjustable potentiometer (variable resistor). They are used to calibrate and fine-tune circuits. Trimmer potentiometers are typically constructed from cermet or have a carbon composition. They can be mounted directly onto PCBs (printed circuit boards).

Trimmer potentiometers are not adjusted very frequently. You can think of them as a set and forget component. Trim pots let you set (or trim) the resistance to obtain a very precise current, output voltage or gain. Once the value has been set, it is unlikely that youll need to adjust the trimmer again unless you need to recalibrate the circuit.

Can I replace a normal potentiometer with a trimmer potentiometer?

Yes, you can. However, trimmer potentiometers are typically more expensive than standard potentiometers with a fixed resistance rating. It is also worth bearing in mind the difference in lifespan too. Many potentiometers have a lifespan that allows for hundreds of thousands of cycles. Trimmer potentiometers typically have a lifespan of a few hundred cycles (at best). Trim pots also tend to take up more space on a PCB than a standard potentiometer.

Do I need a single turn or multiturn trim pot?

This completely depends on the intended application of the trim pot. Multiturn trimmer pots tend to have a higher resolution than single turn models. A single turn trimmer potentiometer is ideal for applications where a resolution of one turn is enough.

Adjustment types

Trimmer potentiometers are normally adjusted by hand (you can turn the adjustment knob with your fingers), with a screwdriver or with a specialised adjustment tool designed for use with a particular model or series.


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Beskrivning Pris Maximum Resistance Mounting Type Number of Turns Orientation Power Rating Series Termination Style Length Tolerance Depth Temperature Coefficient Height Dimensions Maximum Voltage Rating
RS-artikelnummer 167-9360
Tillv. art.nrT7YA101MT20
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10,423 kr
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100 Ω Through Hole 1 Top Adjust 0.5W T7 Pin - ±10% - ±100ppm/°C - - -
RS-artikelnummer 374-6715
Tillv. art.nrT7YA101MT20
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19,17 kr
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100 Ω Through Hole 1 Top Adjust 0.5W T7 Pin - ±10% - ±100ppm/°C - - -
RS-artikelnummer 167-9373
Tillv. art.nrT7YB101MT20
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10,423 kr
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100 Ω Through Hole 1 Top Adjust 0.5W T7 Pin - ±10% - ±100ppm/°C - - -
RS-artikelnummer 374-6866
Tillv. art.nrT7YB101MT20
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18,22 kr
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100 Ω Through Hole 1 Top Adjust 0.5W T7 Pin - ±10% - ±100ppm/°C - - -
RS-artikelnummer 850-9671
Tillv. art.nrT7YA101KT20
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14,657 kr
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100 Ω Through Hole - Top Adjust 0.5W T7 PC Pin - ±10% - ±100ppm/°C - - -
RS-artikelnummer 850-9722
Tillv. art.nrT93YB104KT20
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12,82 kr
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100 kΩ Through Hole 21 (Electrical), 23 (Mechanical) Top Adjust 0.5W T93 PC Pin 9.7mm ±10% - ±100ppm/°C - - -
RS-artikelnummer 169-3023
Tillv. art.nrM43P502KB40
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13,147 kr
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5 kΩ Through Hole 20 Side Adjust 0.5W 43P Pin 20.57mm ±10% - ±100ppm/°C - - -
RS-artikelnummer 154-2555
Tillv. art.nrM63M104KB30T607
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36,50 kr
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100 kΩ Through Hole 1 Finger Adjust 1/2W 63M-T607 Pin 9.52mm ±10% 9.52mm ±100ppm/°C 10.41mm 9.52 x 9.52 x 10.41mm -
RS-artikelnummer 167-9366
Tillv. art.nrT7YA103MT20
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13,024 kr
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10 kΩ Through Hole 1 Top Adjust 0.5W T7 Pin - ±10% - ±100ppm/°C - - -
RS-artikelnummer 374-6787
Tillv. art.nrT7YA103MT20
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14,042 kr
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10 kΩ Through Hole 1 Top Adjust 0.5W T7 Pin - ±10% - ±100ppm/°C - - -
RS-artikelnummer 162-221
Tillv. art.nrM43P502KB40
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18,82 kr
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5 kΩ Through Hole 20 Side Adjust 1/2W 43P Pin 20.57mm ±10% 4.83mm ±100ppm/°C 6.35mm 20.57 x 4.83 x 6.35mm -
RS-artikelnummer 167-9650
Tillv. art.nrM63M104KB30T607
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19,923 kr
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100 kΩ Through Hole 1 Top Adjust 0.5W 63M Pin 9.52mm ±10% - ±100ppm/°C - - -
RS-artikelnummer 167-9377
Tillv. art.nrT7YB222MT20
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8,076 kr
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2.2 kΩ Through Hole 1 Top Adjust 0.5W T7 Pin - ±10% - ±100ppm/°C - - -
RS-artikelnummer 169-3089
Tillv. art.nrM64X102KB40
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14,30 kr
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1 kΩ Through Hole 19 (Electrical), 22 (Mechanical) Side Adjust 0.5W 64X Pin 11mm ±10% - ±100ppm/°C - - -
RS-artikelnummer 850-9643
Tillv. art.nrT73YE103KT20
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8,79 kr
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10 kΩ Through Hole 1 Top Adjust 0.5W T73 PC Pin 6.6mm ±10% - ±100ppm/°C - - -
RS-artikelnummer 788-5079
Tillv. art.nrT93YA502KT20
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14,538 kr
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5 kΩ Through Hole 21 Top Adjust 0.5W T93 Pin 9.7mm ±10% - - - - -
RS-artikelnummer 374-7033
Tillv. art.nrT63YB102KT20
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25,75 kr
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1 kΩ Through Hole 14 Top Adjust 0.25W T63 Pin 6.8mm ±10% - ±100ppm/°C - - -
RS-artikelnummer 162-265
Tillv. art.nrM43P104KB40
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20,06 kr
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100 kΩ Through Hole 20 Side Adjust 1/2W 43P Pin 20.57mm ±10% 4.83mm ±100ppm/°C 6.35mm 20.57 x 4.83 x 6.35mm -
RS-artikelnummer 277-0228
Tillv. art.nrM43P503KB30T601
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38,26 kr
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50 kΩ Panel Mount, Through Hole 20 Side Adjust 0.5W 43P Pin 27.81mm ±10% - ±100ppm/°C - - -
RS-artikelnummer 167-9952
Tillv. art.nrT93YA103KT20
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11,169 kr
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10 kΩ Through Hole 21 (Electrical) Turns, 23 (Mechanical) Turns Top Adjust 0.5W T93 Pin 9.7mm ±10% - ±100ppm/°C - - -