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 729-9664
Référence fabricantEVM2WSX80B54
MarquePanasonic
0,39 €
Each (In a Pack of 5)
Unité
50 kΩ Surface Mount 1 Top Adjust 0.15W EVM2W Solder Pad 2.2mm ±25% - ±250ppm/°C - - -
N° de stock RS 172-3710
Référence fabricantEVM2WSX80B54
MarquePanasonic
0,22 €
Each (On a Reel of 3000)
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- Surface Mount 1 Top Adjust 0.15W EVM2W Solder Pad 2.2mm ±25% - ±250ppm/°C - - -
N° de stock RS 726-3813
Référence fabricantEVM1DSX30B15
MarquePanasonic
0,40 €
Each (In a Pack of 5)
Unité
100 kΩ Surface Mount 1 Top Adjust 0.2W EVM1D Solder Pad 3.8mm ±25% - ±250ppm/°C - - -
N° de stock RS 106-8292
Référence fabricantEVM3WSX80B14
MarquePanasonic
0,156 €
Each (On a Reel of 3000)
Unité
10 kΩ Surface Mount 1 Top Adjust 0.15W EVM3W Solder Pad 3.1mm ±25% - ±250ppm/°C - - -
N° de stock RS 172-4102
Référence fabricantEVM3WSX80B52
MarquePanasonic
0,239 €
Each (On a Reel of 3000)
Unité
- Surface Mount 1 Top Adjust 0.15W EVM3W Solder Pad 3.1mm ±25% - ±250ppm/°C - - -
N° de stock RS 731-2906
Référence fabricantEVM3YSX50B16
MarquePanasonic
0,32 €
Each (In a Pack of 5)
Unité
1 MΩ Surface Mount 1 Top Adjust 0.15W EVM3Y Solder Pad 3.1mm ±25% - ±250ppm/°C - - -
N° de stock RS 726-3817
Référence fabricantEVM1DSX30B25
MarquePanasonic
0,416 €
Each (In a Pack of 5)
Unité
200 kΩ Surface Mount 1 Top Adjust 0.2W EVM1D Solder Pad 3.8mm ±25% - ±250ppm/°C - - -
N° de stock RS 726-3807
Référence fabricantEVM1DSX30B14
MarquePanasonic
0,40 €
Each (In a Pack of 5)
Unité
10 kΩ Surface Mount 1 Top Adjust 0.2W EVM1D Solder Pad 3.8mm ±25% - ±250ppm/°C - - -
N° de stock RS 729-9651
Référence fabricantEVM2WSX80B13
MarquePanasonic
0,334 €
Each (In a Pack of 5)
Unité
1 kΩ Surface Mount 1 Top Adjust 0.15W EVM2W Solder Pad 2.2mm ±25% - ±250ppm/°C - - -
N° de stock RS 729-9667
Référence fabricantEVM2WSX80B14
MarquePanasonic
0,39 €
Each (In a Pack of 5)
Unité
10 kΩ Surface Mount 1 Top Adjust 0.15W EVM2W Solder Pad 2.2mm ±25% - ±250ppm/°C - - -
N° de stock RS 172-4530
Référence fabricantEVM1DSX30B23
MarquePanasonic
0,266 €
Each (On a Reel of 1000)
Unité
- Surface Mount 1 Top Adjust 0.2W EVM1D Solder Pad 3.8mm ±25% - ±250ppm/°C - - -
N° de stock RS 726-3845
Référence fabricantEVMAASA00B14
MarquePanasonic
0,356 €
Each (In a Pack of 5)
Unité
10 kΩ Through Hole 1 Top Adjust 0.3W EVMAA Pin 7.8mm ±25% - ±200ppm/°C - - -
N° de stock RS 172-4729
Référence fabricantEVMAASA00B13
MarquePanasonic
0,249 €
Each (In a Box of 1000)
Unité
- Through Hole 1 Top Adjust 0.3W EVMAA Pin 7.8mm ±25% - ±200ppm/°C - - -
N° de stock RS 726-3867
Référence fabricantEVMAASA00B16
MarquePanasonic
0,396 €
Each (In a Pack of 5)
Unité
1 MΩ Through Hole 1 Top Adjust 0.3W EVMAA Pin 7.8mm ±25% - ±200ppm/°C - - -
N° de stock RS 726-3857
Référence fabricantEVMAASA00B54
MarquePanasonic
0,324 €
Each (In a Pack of 5)
Unité
50 kΩ Through Hole 1 Top Adjust 0.3W EVMAA Pin 7.8mm ±25% - ±200ppm/°C - - -
N° de stock RS 729-9878
Référence fabricantEVM3WSX80B14
MarquePanasonic
0,316 €
Each (In a Pack of 5)
Unité
10 kΩ Surface Mount 1 Top Adjust 0.15W EVM3W Solder Pad 3.1mm ±25% - ±250ppm/°C - - -
N° de stock RS 731-2864
Référence fabricantEVM3YSX50B22
MarquePanasonic
0,272 €
Each (In a Pack of 5)
Unité
200 Ω Surface Mount 1 Top Adjust 0.15W EVM3Y Solder Pad 3.1mm ±25% - ±250ppm/°C - - -
N° de stock RS 729-9862
Référence fabricantEVM3WSX80B13
MarquePanasonic
0,32 €
Each (In a Pack of 5)
Unité
1 kΩ Surface Mount 1 Top Adjust 0.15W EVM3W Solder Pad 3.1mm ±25% - ±250ppm/°C - - -
N° de stock RS 172-4532
Référence fabricantEVM1DSX30B15
MarquePanasonic
0,36 €
Each (On a Reel of 1000)
Unité
- Surface Mount 1 Top Adjust 0.2W EVM1D Solder Pad 3.8mm ±25% - ±250ppm/°C - - -
N° de stock RS 172-4101
Référence fabricantEVM3WSX80B23
MarquePanasonic
0,138 €
Each (On a Reel of 3000)
Unité
- Surface Mount 1 Top Adjust 0.15W EVM3W Solder Pad 3.1mm ±25% - ±250ppm/°C - - -