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. 167-3232
Fabrikantnummer3386X-1-103LF
FabrikantBourns
€ 1,023
Each (In a Tube of 50)
Aantal stuks
10kΩ Through Hole 1 Side Adjust 0.5W 3386 Pin 9.53mm ±10% - ±100ppm/°C - - -
RS-stocknr. 375-562
Fabrikantnummer3386X-1-103LF
FabrikantBourns
€ 1,43
Each
Aantal stuks
10kΩ Through Hole 1 Side Adjust 0.5W 3386 Pin 9.53mm ±10% - ±100ppm/°C - - -
RS-stocknr. 787-0566
Fabrikantnummer3362P-1-302LF
FabrikantBourns
€ 0,85
Each
Aantal stuks
3kΩ Through Hole 1 Top Adjust 0.5W 3362 Pin 6.6mm ±10% - ±100ppm/°C - - -
RS-stocknr. 167-5321
FabrikantnummerPV36W202C01B00
FabrikantBourns
€ 1,223
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. 522-1016
Fabrikantnummer3362W-1-102LF
FabrikantBourns
€ 1,23
Each
Aantal stuks
1kΩ Through Hole 1 Side Adjust 0.5W 3362 Pin 6.6mm ±10% - ±100ppm/°C - - -
RS-stocknr. 167-3236
Fabrikantnummer3006P-1-103LF
FabrikantBourns
€ 1,308
Each (In a Tube of 25)
Aantal stuks
10kΩ Through Hole 15 Side Adjust 0.75W 3006 Pin 20.57mm ±10% - ±100ppm/°C - - -
RS-stocknr. 154-2432
FabrikantnummerM64Y103KB40
FabrikantVishay
€ 2,02
Each
Aantal stuks
10kΩ Through Hole 19 (Electrical), 22 (Mechanical) Top Adjust 1/2W 64Y Pin 9.7mm ±10% 5mm ±100ppm/°C 11.1mm 9.7 x 5 x 11.1mm -
RS-stocknr. 521-9754
Fabrikantnummer3296W-1-253LF
FabrikantBourns
€ 2,39
Each
Aantal stuks
25kΩ Through Hole 25 Top Adjust 0.5W 3296 Pin 9.53mm ±10% - ±100ppm/°C - - -
RS-stocknr. 796-4853
Fabrikantnummer3299W-1-205LF
FabrikantBourns
€ 1,65
Each
Aantal stuks
2MΩ Through Hole 25 Top Adjust 0.5W 3299 Solder Pin 10.03mm ±10% - ±100ppm/°C - - -
RS-stocknr. 167-3543
Fabrikantnummer3214W-1-202E
FabrikantBourns
€ 1,523
Each (On a Reel of 250)
Aantal stuks
2kΩ Surface Mount 5 Top Adjust 0.25W 3214 J-Hook 4.8mm ±10% - ±100ppm/°C - - -
RS-stocknr. 486-7497
FabrikantnummerTS53YL102MR10
FabrikantVishay
€ 1,546
Each (In a Pack of 5)
Aantal stuks
1kΩ Surface Mount 1 Top Adjust 0.25W TS53 J-Hook 5mm ±20% - ±100ppm/°C - - -
RS-stocknr. 167-9355
FabrikantnummerTSM4YJ103KB25
FabrikantVishay
€ 2,261
Each (In a Box of 50)
Aantal stuks
10kΩ Surface Mount 11 Side Adjust 0.25W TSM4 J-Hook 4.8mm ±10% - ±100ppm/°C - - -
RS-stocknr. 167-3363
Fabrikantnummer3266X-1-103LF
FabrikantBourns
€ 2,308
Each (In a Tube of 50)
Aantal stuks
10kΩ Through Hole 12 Side Adjust 0.25W 3266 Pin 7.73mm ±10% - ±100ppm/°C - - -
RS-stocknr. 521-9849
Fabrikantnummer3296X-1-101LF
FabrikantBourns
€ 2,40
Each
Aantal stuks
100Ω Through Hole 25 Side Adjust 0.5W 3296 Pin 11.05mm ±10% - ±100ppm/°C - - -
RS-stocknr. 240-1540
Fabrikantnummer3214W-1-202E
FabrikantBourns
€ 3,16
Each (In a Pack of 5)
Aantal stuks
2kΩ Surface Mount 5 Top Adjust 0.25W 3214 J-Hook 4.8mm ±10% - ±100ppm/°C - - -
RS-stocknr. 162-2614
Fabrikantnummer3296Z-1-200LF
FabrikantBourns
€ 1,341
Each (In a Tube of 50)
Aantal stuks
20Ω Through Hole 25 Side Adjust 0.5W 3296 Solder Pin 9.53mm ±10% - ±100ppm/°C - - -
RS-stocknr. 169-3104
FabrikantnummerM64Y103KB40
FabrikantVishay
€ 1,125
Each (In a Box of 200)
Aantal stuks
10kΩ Through Hole 19 (Electrical), 22 (Mechanical) Top Adjust 0.5W 64Y Pin 9.7mm ±10% - ±100ppm/°C - - -
RS-stocknr. 743-2491
FabrikantnummerTC33X-2-502E
FabrikantBourns
€ 0,244
Each (In a Pack of 5)
Aantal stuks
5kΩ Surface Mount 1 Top Adjust 0.1W TC33 Solder Pad 3.8mm ±25% - ±250ppm/°C - - -
RS-stocknr. 167-3378
Fabrikantnummer3296W-1-104LF
FabrikantBourns
€ 1,45
Each (In a Tube of 50)
Aantal stuks
100kΩ Through Hole 25 Top Adjust 0.5W 3296 Pin 9.53mm ±10% - ±100ppm/°C - - -
RS-stocknr. 167-9432
FabrikantnummerTS53YL102MR10
FabrikantVishay
€ 0,662
Each (On a Reel of 500)
Aantal stuks
1kΩ Surface Mount 1 Top Adjust 0.25W TS53 J-Hook 5mm ±20% - ±100ppm/°C - - -
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