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 you’ll 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 Prix Maximum Resistance Mounting Type Number of Turns Orientation Power Rating Series Termination Style Length Tolerance Depth Temperature Coefficient Height Dimensions Maximum Voltage Rating
N° de stock RS 161-7037
Référence fabricant3329H-1-223LF
MarqueBourns
1,105 €
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22kΩ Through Hole 1 Top Adjust 0.5W 3329 Solder Pin - ±10% - ±100ppm/°C - - -
N° de stock RS 796-4813
Référence fabricant3329H-1-223LF
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1,50 €
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22kΩ Through Hole 1 Top Adjust 0.5W 3329 Solder Pin - ±10% - ±100ppm/°C - - -
N° de stock RS 167-3377
Référence fabricant3296W-1-103LF
MarqueBourns
1,869 €
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10kΩ Through Hole 25 Top Adjust 0.5W 3296 Pin 9.53mm ±10% - ±100ppm/°C - - -
N° de stock RS 521-9647
Référence fabricant3296W-1-103LF
MarqueBourns
2,46 €
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10kΩ Through Hole 25 Top Adjust 0.5W 3296 Pin 9.53mm ±10% - ±100ppm/°C - - -
N° de stock RS 167-3357
Référence fabricant3266W-1-502LF
MarqueBourns
2,378 €
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5kΩ Through Hole 12 Top Adjust 0.25W 3266 Pin 6.71mm ±10% - ±100ppm/°C - - -
N° de stock RS 521-9287
Référence fabricant3266W-1-502LF
MarqueBourns
3,99 €
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5kΩ Through Hole 12 Top Adjust 0.25W 3266 Pin 6.71mm ±10% - ±100ppm/°C - - -
N° de stock RS 162-265
Référence fabricantM43P104KB40
MarqueVishay
2,51 €
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100kΩ 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 -
N° de stock RS 169-3027
Référence fabricantM43P104KB40
MarqueVishay
1,346 €
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100kΩ Through Hole 20 Side Adjust 0.5W 43P Pin 20.57mm ±10% - ±100ppm/°C - - -
N° de stock RS 162-215
Référence fabricantM43P202KB40
MarqueVishay
2,33 €
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2kΩ 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 -
N° de stock RS 167-4566
Référence fabricant3269W-1-103LF
MarqueBourns
2,717 €
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10kΩ Surface Mount 12 Top Adjust 0.25W 3269 Gull Wing 6.35mm ±10% - ±100ppm/°C - - -
N° de stock RS 167-3549
Référence fabricantTC33X-2-103E
MarqueBourns
0,107 €
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Unité
10kΩ Surface Mount 1 Top Adjust 0.1W TC33 Solder Pad 3mm ±25% - ±250ppm/°C - - -
N° de stock RS 461-7135
Référence fabricantTC33X-2-103E
MarqueBourns
0,188 €
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10kΩ Surface Mount 1 Top Adjust 0.1W TC33 Solder Pad 3mm ±25% - ±250ppm/°C - - -
N° de stock RS 161-7033
Référence fabricant3386H-1-222LF
MarqueBourns
0,595 €
Each (In a Tube of 50)
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2.2kΩ Through Hole 1 Side Adjust 0.5W 3386 Solder Pin 9.53mm ±10% - ±100ppm/°C - - -
N° de stock RS 785-9688
Référence fabricant3386H-1-222LF
MarqueBourns
0,85 €
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2.2kΩ Through Hole 1 Side Adjust 0.5W 3386 Solder Pin 9.53mm ±10% - ±100ppm/°C - - -
N° de stock RS 691-2552
Référence fabricant3269W-1-103LF
MarqueBourns
4,99 €
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10kΩ Surface Mount 12 Top Adjust 0.25W 3269 Gull Wing 6.35mm ±10% - ±100ppm/°C - - -
N° de stock RS 169-3022
Référence fabricantM43P202KB40
MarqueVishay
1,112 €
Each (In a Box of 200)
Unité
2kΩ Through Hole 20 Side Adjust 0.5W 43P Pin 20.57mm ±10% - ±100ppm/°C - - -
N° de stock RS 166-9612
Référence fabricantSV01A103AEA01R00
MarqueMurata
0,804 €
Each (On a Reel of 1000)
Unité
10kΩ Surface Mount - Top Adjust - SV01 Gull Wing 11mm ±30% - ±500ppm/°C - - -
N° de stock RS 169-3019
Référence fabricantM43P201KB40
MarqueVishay
1,272 €
Each (In a Box of 200)
Unité
200Ω Through Hole 20 Side Adjust 0.5W 43P Pin 20.57mm ±10% - ±100ppm/°C - - -
N° de stock RS 167-3387
Référence fabricant3299W-1-102LF
MarqueBourns
1,926 €
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1kΩ Through Hole 25 Top Adjust 0.5W 3299 Pin 9.53mm ±10% - ±100ppm/°C - - -
N° de stock RS 277-0212
Référence fabricantM43P103KB30T601
MarqueVishay
4,83 €
Each
Unité
10kΩ Panel Mount, Through Hole 20 Side Adjust 0.5W 43P Pin 27.81mm ±10% - ±100ppm/°C - - -