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)
Unité
100 kΩ Through Hole 1 Side Adjust 0.5W CT6 Solder Pin 7mm ±10% - ±100ppm/°C - - 200 V
N° de stock RS 896-7134
Référence fabricantST-32EA 5kR
1,188 €
Each (In a Bag of 5)
Unité
5 kΩ Surface Mount 1 Top Adjust 0.125W ST-32 Solder Pin 3.4mm ±20% - ±100ppm/°C - - 25 V
N° de stock RS 896-7119
Référence fabricantST-32EA 200kR
1,14 €
Each (In a Bag of 5)
Unité
200 kΩ Surface Mount 1 Top Adjust 0.125W ST-32 Solder Pin 3.4mm ±20% - ±100ppm/°C - - 158 V
N° de stock RS 896-7178
Référence fabricantCT-6EV 50kR
0,604 €
Each (In a Bag of 5)
Unité
50 kΩ Through Hole 1 Top Adjust 0.5W CT6 Solder Pin 7mm ±10% - ±100ppm/°C - - 158 V
N° de stock RS 896-7138
Référence fabricantCT-6EV 100kR
0,604 €
Each (In a Bag of 5)
Unité
100 kΩ Through Hole 1 Top Adjust 0.5W CT6 Solder Pin 7mm ±10% - ±100ppm/°C - - 200 V
N° de stock RS 896-7169
Référence fabricantCT-6EV 20kR
0,604 €
Each (In a Bag of 5)
Unité
20 kΩ Through Hole 1 Top Adjust 0.5W CT6 Solder Pin 7mm ±10% - ±100ppm/°C - - 100 V
N° de stock RS 896-7122
Référence fabricantST-32EA 500R
1,188 €
Each (In a Bag of 5)
Unité
500 Ω Surface Mount 1 Top Adjust 0.125W ST-32 Solder Pin 3.4mm ±20% - ±100ppm/°C - - 7.91 V
N° de stock RS 896-7087
Référence fabricantST-4EA 50kR
1,188 €
Each (In a Bag of 5)
Unité
50 kΩ Surface Mount 1 Top Adjust 0.25W ST-4 Solder Pin 5mm ±20% - ±100ppm/°C - - 112 V
N° de stock RS 896-7128
Référence fabricantST-32EA 500kR
1,14 €
Each (In a Bag of 5)
Unité
500 kΩ Surface Mount 1 Top Adjust 0.125W ST-32 Solder Pin 3.4mm ±20% - ±100ppm/°C - - 200 V
N° de stock RS 896-7153
Référence fabricantCT-6EV 1MR
1,108 €
Each (In a Bag of 5)
Unité
1 MΩ Through Hole 1 Top Adjust 0.5W CT6 Solder Pin 7mm ±10% - ±100ppm/°C - - 200 V
N° de stock RS 896-7116
Référence fabricantST-32EA 20kR
1,14 €
Each (In a Bag of 5)
Unité
20 kΩ Surface Mount 1 Top Adjust 0.125W ST-32 Solder Pin 3.4mm ±20% - ±100ppm/°C - - 50 V
N° de stock RS 896-7112
Référence fabricantST-32EA 200R
1,188 €
Each (In a Bag of 5)
Unité
200 Ω Surface Mount 1 Top Adjust 0.125W ST-32 Solder Pin 3.4mm ±20% - ±100ppm/°C - - 5 V
N° de stock RS 182-5625
Référence fabricantRJ-13SR 2K Ohm (202)
3,152 €
Each (In a Bag of 25)
Unité
2 kΩ Through Hole 1 Side Adjust 0.75W RJ-13 Solder - ±10% - ±100ppm/°C - - 38.7 V
N° de stock RS 896-7099
Référence fabricantST-32EA 100kR
1,188 €
Each (In a Bag of 5)
Unité
100 kΩ Surface Mount 1 Top Adjust 0.125W ST-32 Solder Pin 3.4mm ±20% - ±100ppm/°C - - 112 V
N° de stock RS 182-5699
Référence fabricantSM-42A 100K ohm(104)
11,97 €
Each
Unité
100 kΩ Surface Mount 11 Side Adjust 0.25W SM-42 Solder 4.8mm ±10% - ±100ppm/°C - - 158 V
N° de stock RS 896-7065
Référence fabricantST-4EA 200kR
1,14 €
Each (In a Bag of 5)
Unité
200 kΩ 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
100 Ω Through Hole 1 Top Adjust 0.5W CT6 Solder Pin 7mm ±10% - ±100ppm/°C - - 7.07 V
N° de stock RS 896-7184
Référence fabricantCT-6EX 100R
0,604 €
Each (In a Bag of 5)
Unité
100 Ω Through Hole 1 Side Adjust 0.5W CT6 Solder Pin 7mm ±10% - ±100ppm/°C - - 7.07 V
N° de stock RS 896-7140
Référence fabricantCT-6EV 10kR
1,108 €
Each (In a Bag of 5)
Unité
10 kΩ Through Hole 1 Top Adjust 0.5W CT6 Solder Pin 7mm ±10% - ±100ppm/°C - - 70.7 V
N° de stock RS 896-7068
Référence fabricantST-4EA 1kR
1,14 €
Each (In a Bag of 5)
Unité
1 kΩ Surface Mount 1 Top Adjust 0.25W ST-4 Solder Pin 5mm ±20% - ±100ppm/°C - - 15.8 V