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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Description Price Maximum Resistance Mounting Type Number of Turns Orientation Power Rating Series Termination Style Length Tolerance Depth Temperature Coefficient Height Dimensions Maximum Voltage Rating
RS Stock No. 850-9678
Mfr. Part No.T73YP504KT20
BrandVishay
kr 3,789
Each (In a Pack of 1000)
Units
500 kΩ Through Hole 1 Top Adjust 0.18W T73 PC Pin 6.6mm ±10% - ±100ppm/°C - - -
RS Stock No. 374-6787
Mfr. Part No.T7YA103MT20
BrandVishay
kr 13,54
Each (In a Pack of 5)
Units
10 kΩ Through Hole 1 Top Adjust 0.5W T7 Pin - ±10% - ±100ppm/°C - - -
RS Stock No. 183-1322
Mfr. Part No.M63M502KB40
BrandVishay
kr 40,18
Each
Units
5 kΩ Through Hole 1 Top Adjust 0.5W 63M Pin 9.52mm ±10% - ±100ppm/°C - - -
RS Stock No. 167-9366
Mfr. Part No.T7YA103MT20
BrandVishay
kr 12,558
Each (In a Tube of 50)
Units
10 kΩ Through Hole 1 Top Adjust 0.5W T7 Pin - ±10% - ±100ppm/°C - - -
RS Stock No. 167-9667
Mfr. Part No.M63M502KB40
BrandVishay
kr 15,06
Each (In a Box of 400)
Units
5 kΩ Through Hole 1 Top Adjust 0.5W 63M Pin 9.52mm ±10% - ±100ppm/°C - - -
RS Stock No. 374-7061
Mfr. Part No.T63YB502KT20
BrandVishay
kr 29,11
Each
Units
5 kΩ Through Hole 14 Top Adjust 0.25W T63 Pin 6.8mm ±10% - ±100ppm/°C - - -
RS Stock No. 186-053
Mfr. Part No.M70Y103KB25
BrandVishay
kr 129,41
Each
Units
10 kΩ Through Hole 20 Side Adjust 1W 70Y Pin 33.53mm ±10% - ±100ppm/°C - - -
RS Stock No. 169-3081
Mfr. Part No.M64W503KB40
BrandVishay
kr 13,789
Each (In a Box of 200)
Units
50 kΩ Through Hole 19 (Electrical), 22 (Mechanical) Top Adjust 0.5W 64W Pin 9.7mm ±10% - - - - -
RS Stock No. 167-9526
Mfr. Part No.T63YB502KT20
BrandVishay
kr 19,701
Each (In a Tube of 50)
Units
5 kΩ Through Hole 14 Top Adjust 0.25W T63 Pin 6.8mm ±10% - ±100ppm/°C - - -
RS Stock No. 167-9525
Mfr. Part No.T63YB202KT20
BrandVishay
kr 20,458
Each (In a Tube of 50)
Units
2 kΩ Through Hole 14 Top Adjust 0.25W T63 Pin 6.8mm ±10% - ±100ppm/°C - - -
RS Stock No. 154-2066
Mfr. Part No.M64W503KB40
BrandVishay
kr 20,14
Each
Units
50 kΩ Through Hole 19 (Electrical), 22 (Mechanical) Top Adjust 1/2W 64W Pin 9.7mm ±10% 5mm - 11.1mm 9.7 x 5 x 11.1mm -
RS Stock No. 167-9514
Mfr. Part No.M70Y103KB25
BrandVishay
kr 100,872
Each (In a Box of 50)
Units
10 kΩ Through Hole 20 Side Adjust 1W 70Y Pin 33.53mm ±10% - ±100ppm/°C - - -
RS Stock No. 374-7049
Mfr. Part No.T63YB202KT20
BrandVishay
kr 28,51
Each
Units
2 kΩ Through Hole 14 Top Adjust 0.25W T63 Pin 6.8mm ±10% - ±100ppm/°C - - -
RS Stock No. 788-5075
Mfr. Part No.T93YA202KT20
BrandVishay
kr 13,978
Each (In a Pack of 5)
Units
2 kΩ Through Hole 21 Top Adjust 0.5W T93 Pin 9.7mm ±10% - - - - -
RS Stock No. 167-9945
Mfr. Part No.T93XB502KT20
BrandVishay
kr 9,358
Each (In a Tube of 50)
Units
5 kΩ Through Hole 21 Side Adjust 0.5W T93 Pin 9.7mm ±10% - - - - -
RS Stock No. 154-2533
Mfr. Part No.M63M502KB30T607
BrandVishay
kr 36,09
Each
Units
5 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 Stock No. 850-9353
Mfr. Part No.TS53YL201MR10
BrandVishay
kr 6,819
Each (In a Pack of 500)
Units
200 Ω Surface Mount 1 Top Adjust 0.25W TS53 Solder 5mm ±20% - ±100ppm/°C - - -
RS Stock No. 486-7403
Mfr. Part No.TSM4YL103KB25
BrandVishay
kr 37,766
Each (In a Pack of 5)
Units
10 kΩ Surface Mount 11 Top Adjust 1/4W TSM4 Gull Wing 4.8mm ±10% - ±100ppm/°C - - -
RS Stock No. 850-9659
Mfr. Part No.T73YP102KT20
BrandVishay
kr 7,78
Each
Units
1 kΩ Through Hole 1 Top Adjust 0.5W T73 PC Pin 6.6mm ±10% - ±100ppm/°C - - -
RS Stock No. 167-9357
Mfr. Part No.TSM4YL201KB25
BrandVishay
kr 24,397
Each (In a Box of 50)
Units
200 Ω Surface Mount 11 Top Adjust 0.25W TSM4 Gull Wing 4.8mm ±10% - ±100ppm/°C - - -