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.


...
Read more Read less

Filters

Viewing 1 - 20 of 154 products
Results per page
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. 186-176
Mfr. Part No.PC910 4K7 RS
$17.32
Each
units
4.7 kΩ Through Hole 1 Top Adjust 1W PC910 Pin - ±20% - - - - -
RS Stock No. 163-8560
Mfr. Part No.PC910 4K7 RS
$14.433
Each (In a Box of 100)
units
4.7 kΩ Through Hole 1 Top Adjust 1W PC910 Pin - ±20% - - - - -
RS Stock No. 652-4877
Mfr. Part No.3213X201M
$2.57
Each (In a Pack of 5)
units
200 Ω Surface Mount 1 Top Adjust 0.125W 3213 J-Hook 3.4mm ±20% - ±100ppm/°C - - -
RS Stock No. 473-495
Mfr. Part No.CB10LH471M
$0.898
Each (In a Pack of 5)
units
470 Ω Through Hole 1 Side Adjust 0.15W CB10 Pin 9.8mm ±20% - ±500ppm/°C - - -
RS Stock No. 473-580
Mfr. Part No.CB10LV473M
$0.674
Each (In a Pack of 5)
units
47 kΩ Through Hole 1 Top Adjust 3/20W CB10 Pin 11mm ±20% - ±500ppm/°C - - -
RS Stock No. 473-477
Mfr. Part No.CB10LV223M
$0.382
Each (In a Pack of 5)
units
22 kΩ Through Hole 1 Top Adjust 0.15W CB10 Pin 11mm ±20% - ±500ppm/°C - - -
RS Stock No. 754-2129
Mfr. Part No.3203X103P
$2.06
Each
units
10 kΩ Surface Mount 1 Top Adjust 0.05W 3203 Tab 3.4mm ±20% - ±100ppm/°C - - -
RS Stock No. 164-3597
Mfr. Part No.3203X103P
$1.734
Each (In a Bag of 500)
units
10 kΩ Surface Mount 1 Top Adjust 0.05W 3203 Tab 3.4mm ±20% - ±100ppm/°C - - -
RS Stock No. 652-4647
Mfr. Part No.409HA503M
$1.17
Each
units
50 kΩ Through Hole 1 Top Adjust 0.5W 409 Pin 9mm ±20% - ±250ppm/°C - - -
RS Stock No. 163-9526
Mfr. Part No.409HA102M
$0.774
Each (In a Box of 500)
units
1 kΩ Through Hole 1 Top Adjust 0.5W 409 Pin 9mm ±20% - ±250ppm/°C - - -
RS Stock No. 652-4546
Mfr. Part No.409HA102M
$0.972
Each (In a Pack of 5)
units
1 kΩ Through Hole 1 Top Adjust 0.5W 409 Pin 9mm ±20% - ±250ppm/°C - - -
RS Stock No. 161-9911
Mfr. Part No.416MA102P
$0.428
Each (In a Bag of 500)
units
1 kΩ Through Hole 1 Top Adjust 0.2W 416 Pin 6.8mm ±25% - ±250ppm/°C - - -
RS Stock No. 652-4912
Mfr. Part No.416MA104P
$0.837
Each (In a Pack of 10)
units
100 kΩ Through Hole 1 Top Adjust 0.2W 416 Pin 6.8mm ±25% - ±250ppm/°C - - -
RS Stock No. 753-6767
Mfr. Part No.3150W102P
$1.49
Each
units
1 kΩ Surface Mount 1 Top Adjust 0.2W 3150 Tab 3.8mm ±25% - ±250ppm/°C - - -
RS Stock No. 168-0952
Mfr. Part No.416MA104P
$488.58
1 Reel of 1000
Reel(s)
100 kΩ Through Hole 1 Top Adjust 0.2W 416 Pin 6.8mm ±25% - ±250ppm/°C - - -
RS Stock No. 473-534
Mfr. Part No.CB10LV471M
$0.646
Each (In a Pack of 5)
units
470 Ω Through Hole 1 Top Adjust 0.15W CB10 Pin 11mm ±20% - ±500ppm/°C - - -
RS Stock No. 173-5398
Mfr. Part No.3204X503P
$1.357
Each (On a Reel of 1000)
units
50 kΩ Surface Mount 1 Top Adjust 0.1W 3204 J-Hook 5mm ±25% - ±250ppm/°C - - -
RS Stock No. 500-2736
Mfr. Part No.3204X503P
$1.694
Each (In a Pack of 5)
units
50 kΩ Surface Mount 1 Top Adjust 0.1W 3204 J-Hook 5mm ±25% - ±250ppm/°C - - -
RS Stock No. 753-6837
Mfr. Part No.3142W503P
$2.87
Each
units
50 kΩ Surface Mount 1 Top Adjust 0.15W 3142 Tab 4mm ±25% - ±250ppm/°C - - -
RS Stock No. 162-1633
Mfr. Part No.CB10LV471M
$369.24
1 Box of 1000
Box(es)
470 Ω Through Hole 1 Top Adjust 0.15W CB10 Pin 11mm ±20% - ±500ppm/°C - - -