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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Omschrijving Prijs Maximum Resistance Mounting Type Number of Turns Orientation Power Rating Series Termination Style Length Tolerance Depth Temperature Coefficient Height Dimensions Maximum Voltage Rating
RS-stocknr. 167-3431
Fabrikantnummer3329H-1-103LF
FabrikantBourns
€ 1,455
Each (In a Tube of 50)
Aantal stuks
10kΩ Through Hole 1 Top Adjust 0.5W 3329 Pin - ±10% - ±100ppm/°C - - -
RS-stocknr. 167-3354
Fabrikantnummer3266W-1-203LF
FabrikantBourns
€ 2,114
Each (In a Tube of 50)
Aantal stuks
20kΩ Through Hole 12 Top Adjust 0.25W 3266 Pin 6.71mm ±10% - ±100ppm/°C - - -
RS-stocknr. 521-9259
Fabrikantnummer3266W-1-203LF
FabrikantBourns
€ 3,61
Each
Aantal stuks
20kΩ Through Hole 12 Top Adjust 0.25W 3266 Pin 6.71mm ±10% - ±100ppm/°C - - -
RS-stocknr. 521-9631
Fabrikantnummer3296W-1-102LF
FabrikantBourns
€ 2,49
Each
Aantal stuks
1kΩ Through Hole 25 Top Adjust 0.5W 3296 Pin 9.53mm ±10% - ±100ppm/°C - - -
RS-stocknr. 167-3376
Fabrikantnummer3296W-1-102LF
FabrikantBourns
€ 1,398
Each (In a Tube of 50)
Aantal stuks
1kΩ Through Hole 25 Top Adjust 0.5W 3296 Pin 9.53mm ±10% - ±100ppm/°C - - -
RS-stocknr. 691-7632
Fabrikantnummer3339P-1-103LF
FabrikantBourns
€ 5,28
Each
Aantal stuks
10kΩ Through Hole 4 Top Adjust 0.5W 3339 Pin - ±10% - ±100ppm/°C - - -
RS-stocknr. 486-7526
FabrikantnummerTS53YL103MR10
FabrikantVishay
€ 1,016
Each (In a Pack of 5)
Aantal stuks
10kΩ Surface Mount 1 Top Adjust 0.25W TS53 Gull Wing 5mm ±20% - ±100ppm/°C - - -
RS-stocknr. 521-9271
Fabrikantnummer3266W-1-501LF
FabrikantBourns
€ 3,99
Each
Aantal stuks
500Ω Through Hole 12 Top Adjust 0.25W 3266 Pin 6.71mm ±10% - ±100ppm/°C - - -
RS-stocknr. 522-1151
Fabrikantnummer3386F-1-101LF
FabrikantBourns
€ 1,55
Each
Aantal stuks
100Ω Through Hole 1 Top Adjust 0.5W 3386 Pin 9.53mm ±10% - ±100ppm/°C - - -
RS-stocknr. 167-3356
Fabrikantnummer3266W-1-501LF
FabrikantBourns
€ 2,285
Each (In a Tube of 50)
Aantal stuks
500Ω Through Hole 12 Top Adjust 0.25W 3266 Pin 6.71mm ±10% - ±100ppm/°C - - -
RS-stocknr. 167-4571
Fabrikantnummer3339P-1-103LF
FabrikantBourns
€ 3,365
Each (In a Tube of 50)
Aantal stuks
10kΩ Through Hole 4 Top Adjust 0.5W 3339 Pin - ±10% - ±100ppm/°C - - -
RS-stocknr. 167-3447
Fabrikantnummer3386F-1-101LF
FabrikantBourns
€ 0,88
Each (In a Tube of 50)
Aantal stuks
100Ω Through Hole 1 Top Adjust 0.5W 3386 Pin 9.53mm ±10% - ±100ppm/°C - - -
RS-stocknr. 167-9436
FabrikantnummerTS53YL103MR10
FabrikantVishay
€ 0,596
Each (On a Reel of 500)
Aantal stuks
10kΩ Surface Mount 1 Top Adjust 0.25W TS53 Gull Wing 5mm ±20% - ±100ppm/°C - - -
RS-stocknr. 162-1633
FabrikantnummerCB10LV471M
FabrikantTE Connectivity
€ 0,216
Each (In a Box of 1000)
Aantal stuks
470Ω Through Hole 1 Top Adjust 0.15W CB10 Pin 11mm ±20% - ±500ppm/°C - - -
RS-stocknr. 769-2176
FabrikantnummerPV36W202C01B00
FabrikantBourns
€ 1,42
Each
Aantal stuks
2kΩ Through Hole 25 Top Adjust 0.5W PV36 Solder Pin 9.6mm ±10% - ±100ppm/°C - - -
RS-stocknr. 106-8293
FabrikantnummerEVM3YSX50B14
FabrikantPanasonic
€ 0,143
Each (On a Reel of 2000)
Aantal stuks
10kΩ Surface Mount 1 Top Adjust 0.15W EVM3Y Solder Pad 3.1mm ±25% - ±250ppm/°C - - -
RS-stocknr. 473-534
FabrikantnummerCB10LV471M
FabrikantTE Connectivity
€ 0,404
Each (In a Pack of 5)
Aantal stuks
470Ω Through Hole 1 Top Adjust 0.15W CB10 Pin 11mm ±20% - ±500ppm/°C - - -
RS-stocknr. 167-5321
FabrikantnummerPV36W202C01B00
FabrikantBourns
€ 1,282
Each (In a Tube of 50)
Aantal stuks
2kΩ Through Hole 25 Top Adjust 0.5W PV36 Solder Pin 9.6mm ±10% - ±100ppm/°C - - -
RS-stocknr. 731-2883
FabrikantnummerEVM3YSX50B14
FabrikantPanasonic
€ 0,388
Each (In a Pack of 5)
Aantal stuks
10kΩ Surface Mount 1 Top Adjust 0.15W EVM3Y Solder Pad 3.1mm ±25% - ±250ppm/°C - - -
RS-stocknr. 161-6960
Fabrikantnummer3362P-1-302LF
FabrikantBourns
€ 0,551
Each (In a Tube of 50)
Aantal stuks
3kΩ Through Hole 1 Top Adjust 0.5W 3362 Pin 6.6mm ±10% - ±100ppm/°C - - -
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