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 896-7181
Référence fabricantCT-6EX 100kR
0,604 €
Each (In a Bag of 5)
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100kΩ Through Hole 1 Side Adjust 0.5W CT6 Solder Pin 7mm ±10% - ±100ppm/°C - - 200 V
N° de stock RS 182-5624
Référence fabricantRJ-13SR 5K Ohm (502)
3,152 €
Each (In a Bag of 25)
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5kΩ Through Hole 1 Side Adjust 0.75W RJ-13 Solder - ±10% - ±100ppm/°C - - 61.2 V
N° de stock RS 182-5625
Référence fabricantRJ-13SR 2K Ohm (202)
3,152 €
Each (In a Bag of 25)
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2kΩ Through Hole 1 Side Adjust 0.75W RJ-13 Solder - ±10% - ±100ppm/°C - - 38.7 V
N° de stock RS 182-5626
Référence fabricantRJ-13S 100K Ohm (104)
2,60 €
Each (In a Bag of 50)
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100kΩ Through Hole 1 Side Adjust 0.75W RJ-13 Solder - ±10% - ±100ppm/°C - - 274 V
N° de stock RS 896-7071
Référence fabricantST-4EA 2kR
1,188 €
Each (In a Bag of 5)
Unité
2kΩ Surface Mount 1 Top Adjust 0.25W ST-4 Solder Pin 5mm ±20% - ±100ppm/°C - - 22.4 V
N° de stock RS 182-5701
Référence fabricantRJ-13SR 5K Ohm (502)
3,76 €
Each
Unité
5kΩ Through Hole 1 Side Adjust 0.75W RJ-13 Solder - ±10% - ±100ppm/°C - - 61.2 V
N° de stock RS 896-7207
Référence fabricantCT-6EX 20kR
0,604 €
Each (In a Bag of 5)
Unité
20kΩ Through Hole 1 Side Adjust 0.5W CT6 Solder Pin 7mm ±10% - ±100ppm/°C - - 100 V
N° de stock RS 896-7175
Référence fabricantCT-6EV 500R
1,108 €
Each (In a Bag of 5)
Unité
500Ω Through Hole 1 Top Adjust 0.5W CT6 Solder Pin 7mm ±10% - ±100ppm/°C - - 15.8 V
N° de stock RS 896-7099
Référence fabricantST-32EA 100kR
1,188 €
Each (In a Bag of 5)
Unité
100kΩ Surface Mount 1 Top Adjust 0.125W ST-32 Solder Pin 3.4mm ±20% - ±100ppm/°C - - 112 V
N° de stock RS 896-7197
Référence fabricantCT-6EX 1kR
0,604 €
Each (In a Bag of 5)
Unité
1kΩ Through Hole 1 Side Adjust 0.5W CT6 Solder Pin 7mm ±10% - ±100ppm/°C - - 22.4 V
N° de stock RS 896-7201
Référence fabricantCT-6EX 2kR
0,604 €
Each (In a Bag of 5)
Unité
2kΩ Through Hole 1 Side Adjust 0.5W CT6 Solder Pin 7mm ±10% - ±100ppm/°C - - 31.6 V
N° de stock RS 182-5695
Référence fabricantSM-42B 50K ohm(503)
11,97 €
Each
Unité
50kΩ Surface Mount 11 Side Adjust 0.25W SM-42 Solder 4.8mm ±10% - ±100ppm/°C - - 112 V
N° de stock RS 896-7125
Référence fabricantST-32EA 2kR
1,188 €
Each (In a Bag of 5)
Unité
2kΩ Surface Mount 1 Top Adjust 0.125W ST-32 Solder Pin 3.4mm ±20% - ±100ppm/°C - - 15.8 V
N° de stock RS 896-7093
Référence fabricantST-32EA 100R
1,14 €
Each (In a Bag of 5)
Unité
100Ω Surface Mount 1 Top Adjust 0.125W ST-32 Solder Pin 3.4mm ±20% - ±100ppm/°C - - 3.53 V
N° de stock RS 896-7188
Référence fabricantCT-6EX 10kR
0,604 €
Each (In a Bag of 5)
Unité
10kΩ Through Hole 1 Side Adjust 0.5W CT6 Solder Pin 7mm ±10% - ±100ppm/°C - - 70.7 V
N° de stock RS 896-7103
Référence fabricantST-32EA 10kR
1,14 €
Each (In a Bag of 5)
Unité
10kΩ Surface Mount 1 Top Adjust 0.125W ST-32 Solder Pin 3.4mm ±20% - ±100ppm/°C - - 35.4 V
N° de stock RS 896-7134
Référence fabricantST-32EA 5kR
1,188 €
Each (In a Bag of 5)
Unité
5kΩ Surface Mount 1 Top Adjust 0.125W ST-32 Solder Pin 3.4mm ±20% - ±100ppm/°C - - 25 V
N° de stock RS 182-5699
Référence fabricantSM-42A 100K ohm(104)
11,97 €
Each
Unité
100kΩ Surface Mount 11 Side Adjust 0.25W SM-42 Solder 4.8mm ±10% - ±100ppm/°C - - 158 V
N° de stock RS 896-7080
Référence fabricantST-4EA 500kR
1,188 €
Each (In a Bag of 5)
Unité
500kΩ Surface Mount 1 Top Adjust 0.25W ST-4 Solder Pin 5mm ±20% - ±100ppm/°C - - 200 V
N° de stock RS 896-7147
Référence fabricantCT-6EV 100R
0,604 €
Each (In a Bag of 5)
Unité
100Ω Through Hole 1 Top Adjust 0.5W CT6 Solder Pin 7mm ±10% - ±100ppm/°C - - 7.07 V