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. 521-9647
Fabrikantnummer3296W-1-103LF
FabrikantBourns
€ 2,19
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Aantal stuks
10 kΩ Through Hole 25 Top Adjust 0.5W 3296 Pin 9.53mm ±10% - ±100ppm/°C - - -
RS-stocknr. 167-3377
Fabrikantnummer3296W-1-103LF
FabrikantBourns
€ 1,296
Each (In a Tube of 50)
Aantal stuks
10 kΩ Through Hole 25 Top Adjust 0.5W 3296 Pin 9.53mm ±10% - ±100ppm/°C - - -
RS-stocknr. 521-9186
Fabrikantnummer3266W-1-102LF
FabrikantBourns
€ 3,61
Each
Aantal stuks
1 kΩ Through Hole 12 Top Adjust 0.25W 3266 Pin 6.71mm ±10% - ±100ppm/°C - - -
RS-stocknr. 167-3361
Fabrikantnummer3266W-1-102LF
FabrikantBourns
€ 2,239
Each (In a Tube of 50)
Aantal stuks
1 kΩ Through Hole 12 Top Adjust 0.25W 3266 Pin 6.71mm ±10% - ±100ppm/°C - - -
RS-stocknr. 167-3253
Fabrikantnummer3362P-1-103LF
FabrikantBourns
€ 0,691
Each (In a Tube of 50)
Aantal stuks
10 kΩ Through Hole 1 Top Adjust 0.5W 3362 Pin 6.6mm ±10% - ±100ppm/°C - - -
RS-stocknr. 522-2233
Fabrikantnummer3386F-1-103TLF
FabrikantBourns
€ 2,54
Each
Aantal stuks
10 kΩ Through Hole 1 Top Adjust 0.5W 3386 Pin 9.53mm ±10% - ±100ppm/°C - - -
RS-stocknr. 522-0899
Fabrikantnummer3362P-1-103LF
FabrikantBourns
€ 1,18
Each
Aantal stuks
10 kΩ Through Hole 1 Top Adjust 0.5W 3362 Pin 6.6mm ±10% - ±100ppm/°C - - -
RS-stocknr. 167-3450
Fabrikantnummer3386F-1-103TLF
FabrikantBourns
€ 1,58
Each (In a Tube of 50)
Aantal stuks
10 kΩ Through Hole 1 Top Adjust 0.5W 3386 Pin 9.53mm ±10% - ±100ppm/°C - - -
RS-stocknr. 161-6983
Fabrikantnummer3296W-1-125LF
FabrikantBourns
€ 0,847
Each (In a Tube of 50)
Aantal stuks
1.2 MΩ Through Hole 25 Top Adjust 0.5W 3296 Solder Pin 9.53mm ±10% - ±100ppm/°C - - -
RS-stocknr. 785-9723
Fabrikantnummer3296W-1-125LF
FabrikantBourns
€ 1,61
Each
Aantal stuks
1.2 MΩ Through Hole 25 Top Adjust 0.5W 3296 Solder Pin 9.53mm ±10% - ±100ppm/°C - - -
RS-stocknr. 521-9209
Fabrikantnummer3266W-1-104LF
FabrikantBourns
€ 3,87
Each
Aantal stuks
100 kΩ Through Hole 12 Top Adjust 0.25W 3266 Pin 6.71mm ±10% - ±100ppm/°C - - -
RS-stocknr. 167-3350
Fabrikantnummer3266W-1-104LF
FabrikantBourns
€ 2,33
Each (In a Tube of 50)
Aantal stuks
100 kΩ Through Hole 12 Top Adjust 0.25W 3266 Pin 6.71mm ±10% - ±100ppm/°C - - -
RS-stocknr. 743-2340
Fabrikantnummer3296Z-1-102LF
FabrikantBourns
€ 2,31
Each
Aantal stuks
1 kΩ Through Hole 25 Side Adjust 0.5W 3296 Pin 9.53mm ±10% - ±100ppm/°C - - -
RS-stocknr. 167-3364
Fabrikantnummer3296W-1-503LF
FabrikantBourns
€ 1,387
Each (In a Tube of 50)
Aantal stuks
50 kΩ Through Hole 25 Top Adjust 0.5W 3296 Pin 9.53mm ±10% - ±100ppm/°C - - -
RS-stocknr. 521-9805
Fabrikantnummer3296W-1-503LF
FabrikantBourns
€ 2,15
Each
Aantal stuks
50 kΩ Through Hole 25 Top Adjust 0.5W 3296 Pin 9.53mm ±10% - ±100ppm/°C - - -
RS-stocknr. 461-7135
FabrikantnummerTC33X-2-103E
FabrikantBourns
€ 0,188
Each (In a Pack of 50)
Aantal stuks
10 kΩ Surface Mount 1 Top Adjust 0.1W TC33 Solder Pad 3mm ±25% - ±250ppm/°C - - -
RS-stocknr. 167-5229
Fabrikantnummer3296Z-1-102LF
FabrikantBourns
€ 1,455
Each (In a Tube of 50)
Aantal stuks
1 kΩ Through Hole 25 Side Adjust 0.5W 3296 Pin 9.53mm ±10% - ±100ppm/°C - - -
RS-stocknr. 167-3549
FabrikantnummerTC33X-2-103E
FabrikantBourns
€ 0,107
Each (On a Reel of 2500)
Aantal stuks
10 kΩ Surface Mount 1 Top Adjust 0.1W TC33 Solder Pad 3mm ±25% - ±250ppm/°C - - -
RS-stocknr. 522-2485
Fabrikantnummer3386G-1-103LF
FabrikantBourns
€ 1,55
Each
Aantal stuks
10 kΩ Through Hole 1 Top Adjust 0.5W 3386 Pin 9.53mm ±10% - ±100ppm/°C - - -
RS-stocknr. 167-3436
Fabrikantnummer3386G-1-103LF
FabrikantBourns
€ 0,947
Each (In a Tube of 50)
Aantal stuks
10 kΩ Through Hole 1 Top Adjust 0.5W 3386 Pin 9.53mm ±10% - ±100ppm/°C - - -