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 81 - 100 of 2417 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. 167-3544
Mfr. Part No.3214W-1-502E
BrandBourns
TWD70.50
Each (On a Reel of 250)
units
5 kΩ Surface Mount 5 Top Adjust 0.25W 3214 J-Hook 4.8mm ±10% - ±100ppm/°C - - -
RS Stock No. 850-9372
Mfr. Part No.TS63Y504KR10
BrandVishay
TWD75.00
Each (In a Pack of 500)
units
500 kΩ Surface Mount 14 Top Adjust 0.13W TS63 Solder 6.85mm ±10% - ±100ppm/°C - - -
RS Stock No. 167-4569
Mfr. Part No.3269W-1-202LF
BrandBourns
TWD123.10
Each (In a Tube of 50)
units
2 kΩ Surface Mount 12 Top Adjust 0.25W 3269 Gull Wing 6.35mm ±10% - ±100ppm/°C - - -
RS Stock No. 796-4831
Mfr. Part No.3329H-1-302LF
BrandBourns
TWD102.00
Each
units
3 kΩ Through Hole 1 Top Adjust 0.5W 3329 Solder Pin - ±10% - ±100ppm/°C - - -
RS Stock No. 522-2801
Mfr. Part No.3386P-1-504LF
BrandBourns
TWD52.00
Each
units
500 kΩ Through Hole 1 Top Adjust 0.5W 3386 Pin 9.53mm ±10% - ±100ppm/°C - - -
RS Stock No. 240-1556
Mfr. Part No.3214W-1-502E
BrandBourns
TWD105.80
Each (In a Pack of 5)
units
5 kΩ Surface Mount 5 Top Adjust 0.25W 3214 J-Hook 4.8mm ±10% - ±100ppm/°C - - -
RS Stock No. 521-9653
Mfr. Part No.3296W-1-104LF
BrandBourns
TWD95.00
Each
units
100 kΩ Through Hole 25 Top Adjust 0.5W 3296 Pin 9.53mm ±10% - ±100ppm/°C - - -
RS Stock No. 796-4778
Mfr. Part No.3224G-1-501E
BrandBourns
TWD164.00
Each
units
500 Ω Surface Mount 12 Side Adjust 0.25W 3224 Gull Wing 4.8mm ±10% - ±100ppm/°C - - -
RS Stock No. 100-1177
Mfr. Part No.3314G-1-103E
BrandBourns
TWD50.60
Each (In a Pack of 10)
units
10 kΩ Surface Mount 1 Top Adjust 0.25W 3314 Gull Wing 5mm ±20% - ±100ppm/°C - - -
RS Stock No. 172-4469
Mfr. Part No.EVM2WSX80B14
BrandPanasonic
TWD8.40
Each (On a Reel of 3000)
units
- Surface Mount 1 Top Adjust 0.15W EVM2W Solder Pad 2.2mm ±25% - ±250ppm/°C - - -
RS Stock No. 167-3529
Mfr. Part No.3224W-1-202E
BrandBourns
TWD109.10
Each (On a Reel of 250)
units
2 kΩ Surface Mount 12 Top Adjust 0.25W 3224 J-Hook 4.8mm ±10% - ±100ppm/°C - - -
RS Stock No. 167-3337
Mfr. Part No.3314G-1-103E
BrandBourns
TWD36.70
Each (On a Reel of 500)
units
10 kΩ Surface Mount 1 Top Adjust 0.25W 3314 Gull Wing 5mm ±20% - ±100ppm/°C - - -
RS Stock No. 763-7173
Mfr. Part No.Y005620K0000K0L
TWD509.00
Each
units
20 kΩ Through Hole 26 Side Adjust 0.75W 1280G Solder Pin 19.05mm ±10% - ±15ppm/°C - - -
RS Stock No. 522-0221
Mfr. Part No.3296Y-1-503LF
BrandBourns
TWD74.00
Each
units
50 kΩ Through Hole 25 Top Adjust 0.5W 3296 Pin 9.53mm ±10% - ±100ppm/°C - - -
RS Stock No. 522-2227
Mfr. Part No.3386F-1-103LF
BrandBourns
TWD53.00
Each
units
10 kΩ Through Hole 1 Top Adjust 0.5W 3386 Pin 9.53mm ±10% - ±100ppm/°C - - -
RS Stock No. 522-0732
Mfr. Part No.3329H-1-103LF
BrandBourns
TWD101.00
Each
units
10 kΩ Through Hole 1 Top Adjust 0.5W 3329 Pin - ±10% - ±100ppm/°C - - -
RS Stock No. 167-3462
Mfr. Part No.3386F-1-502LF
BrandBourns
TWD40.90
Each (In a Tube of 50)
units
5 kΩ Through Hole 1 Top Adjust 0.5W 3386 Pin 9.53mm ±10% - ±100ppm/°C - - -
RS Stock No. 521-9322
Mfr. Part No.3266X-1-102LF
BrandBourns
TWD138.00
Each
units
1 kΩ Through Hole 12 Side Adjust 0.25W 3266 Pin 7.73mm ±10% - ±100ppm/°C - - -
RS Stock No. 602-5320
Mfr. Part No.SM-43W 100k Ohm
TWD193.80
Each (In a Pack of 5)
units
100 kΩ Surface Mount 5 Top Adjust 0.25W SM-43 J-Hook 4.8mm ±10% - ±100ppm/°C - - -
RS Stock No. 521-9192
Mfr. Part No.3266W-1-103LF
BrandBourns
TWD138.00
Each
units
10 kΩ Through Hole 12 Top Adjust 0.25W 3266 Pin 6.71mm ±10% - ±100ppm/°C - - -