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
€ 2,46
Each
Aantal stuks
10kΩ Through Hole 25 Top Adjust 0.5W 3296 Pin 9.53mm ±10% - ±100ppm/°C - - -
RS-stocknr. 167-3377
Fabrikantnummer3296W-1-103LF
FabrikantBourns
€ 1,869
Each (In a Tube of 50)
Aantal stuks
10kΩ Through Hole 25 Top Adjust 0.5W 3296 Pin 9.53mm ±10% - ±100ppm/°C - - -
RS-stocknr. 521-9186
Fabrikantnummer3266W-1-102LF
FabrikantBourns
€ 3,59
Each
Aantal stuks
1kΩ Through Hole 12 Top Adjust 0.25W 3266 Pin 6.71mm ±10% - ±100ppm/°C - - -
RS-stocknr. 167-3361
Fabrikantnummer3266W-1-102LF
FabrikantBourns
€ 2,63
Each (In a Tube of 50)
Aantal stuks
1kΩ Through Hole 12 Top Adjust 0.25W 3266 Pin 6.71mm ±10% - ±100ppm/°C - - -
RS-stocknr. 486-7627
FabrikantnummerTS53YJ103MR10
FabrikantVishay
€ 1,184
Each (In a Pack of 5)
Aantal stuks
10kΩ Surface Mount 1 Top Adjust 0.25W TS53 J-Hook 5mm ±20% - ±100ppm/°C - - -
RS-stocknr. 167-9442
FabrikantnummerTS53YJ103MR10
FabrikantVishay
€ 0,572
Each (On a Reel of 500)
Aantal stuks
10kΩ Surface Mount 1 Top Adjust 0.25W TS53 J-Hook 5mm ±20% - ±100ppm/°C - - -
RS-stocknr. 522-2233
Fabrikantnummer3386F-1-103TLF
FabrikantBourns
€ 2,54
Each
Aantal stuks
10kΩ Through Hole 1 Top Adjust 0.5W 3386 Pin 9.53mm ±10% - ±100ppm/°C - - -
RS-stocknr. 167-3253
Fabrikantnummer3362P-1-103LF
FabrikantBourns
€ 0,719
Each (In a Tube of 50)
Aantal stuks
10kΩ Through Hole 1 Top Adjust 0.5W 3362 Pin 6.6mm ±10% - ±100ppm/°C - - -
RS-stocknr. 522-0899
Fabrikantnummer3362P-1-103LF
FabrikantBourns
€ 1,23
Each
Aantal stuks
10kΩ 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
10kΩ Through Hole 1 Top Adjust 0.5W 3386 Pin 9.53mm ±10% - ±100ppm/°C - - -
RS-stocknr. 162-237
FabrikantnummerM43P103KB40
FabrikantVishay
€ 1,96
Each
Aantal stuks
10kΩ Through Hole 20 Side Adjust 1/2W 43P Pin 20.57mm ±10% 4.83mm ±100ppm/°C 6.35mm 20.57 x 4.83 x 6.35mm -
RS-stocknr. 169-3024
FabrikantnummerM43P103KB40
FabrikantVishay
€ 1,112
Each (In a Box of 200)
Aantal stuks
10kΩ Through Hole 20 Side Adjust 0.5W 43P Pin 20.57mm ±10% - ±100ppm/°C - - -
RS-stocknr. 161-6983
Fabrikantnummer3296W-1-125LF
FabrikantBourns
€ 0,847
Each (In a Tube of 50)
Aantal stuks
1.2MΩ Through Hole 25 Top Adjust 0.5W 3296 Solder Pin 9.53mm ±10% - ±100ppm/°C - - -
RS-stocknr. 164-8610
Fabrikantnummer3204X103P
FabrikantTE Connectivity
€ 0,974
Each (On a Reel of 500)
Aantal stuks
10kΩ Surface Mount 1 Top Adjust 0.1W 3204 J-Hook 5mm ±25% - ±250ppm/°C - - -
RS-stocknr. 500-2770
Fabrikantnummer3204X103P
FabrikantTE Connectivity
€ 1,832
Each (In a Pack of 5)
Aantal stuks
10kΩ Surface Mount 1 Top Adjust 0.1W 3204 J-Hook 5mm ±25% - ±250ppm/°C - - -
RS-stocknr. 785-9723
Fabrikantnummer3296W-1-125LF
FabrikantBourns
€ 1,61
Each
Aantal stuks
1.2MΩ Through Hole 25 Top Adjust 0.5W 3296 Solder Pin 9.53mm ±10% - ±100ppm/°C - - -
RS-stocknr. 167-3549
FabrikantnummerTC33X-2-103E
FabrikantBourns
€ 0,107
Each (On a Reel of 2500)
Aantal stuks
10kΩ Surface Mount 1 Top Adjust 0.1W TC33 Solder Pad 3mm ±25% - ±250ppm/°C - - -
RS-stocknr. 167-3364
Fabrikantnummer3296W-1-503LF
FabrikantBourns
€ 1,511
Each (In a Tube of 50)
Aantal stuks
50kΩ Through Hole 25 Top Adjust 0.5W 3296 Pin 9.53mm ±10% - ±100ppm/°C - - -
RS-stocknr. 521-9805
Fabrikantnummer3296W-1-503LF
FabrikantBourns
€ 1,99
Each
Aantal stuks
50kΩ Through Hole 25 Top Adjust 0.5W 3296 Pin 9.53mm ±10% - ±100ppm/°C - - -
RS-stocknr. 167-3350
Fabrikantnummer3266W-1-104LF
FabrikantBourns
€ 2,378
Each (In a Tube of 50)
Aantal stuks
100kΩ Through Hole 12 Top Adjust 0.25W 3266 Pin 6.71mm ±10% - ±100ppm/°C - - -
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