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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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庫存編號 521-9192
製造零件編號3266W-1-103LF
BrandBourns
HK$36.67
單位
10 kΩ Through Hole 12 Top Adjust 0.25W 3266 Pin 6.71mm ±10% - ±100ppm/°C - - -
RS庫存編號 167-3238
製造零件編號3006P-1-201LF
BrandBourns
HK$14.03
毎管:25 個
單位
200 Ω Through Hole 15 Side Adjust 0.75W 3006 Pin 20.57mm ±10% - ±100ppm/°C - - -
RS庫存編號 652-4697
製造零件編號409VA103M
HK$5.48
單位
10 kΩ Through Hole 1 Side Adjust 0.5W 409 Pin 9mm ±20% - ±250ppm/°C - - -
RS庫存編號 788-5025
製造零件編號T93XA102KT20
BrandVishay
HK$15.686
/個 (每包:5個)
單位
1 kΩ Through Hole 21 Side Adjust 0.5W T93 Pin 9.7mm ±10% - ±100ppm/°C - - -
RS庫存編號 167-3368
製造零件編號3296W-1-100LF
BrandBourns
HK$18.65
毎管:50 個
單位
10 Ω Through Hole 25 Top Adjust 0.5W 3296 Pin 9.53mm ±10% - ±100ppm/°C - - -
RS庫存編號 743-2426
製造零件編號3362W-1-101LF
BrandBourns
HK$8.73
單位
100 Ω Through Hole 1 Side Adjust 0.5W 3362 Pin 6.6mm ±10% - ±100ppm/°C - - -
RS庫存編號 167-3501
製造零件編號3296W-1-501LF
BrandBourns
HK$15.66
毎管:50 個
單位
500 Ω Through Hole 25 Top Adjust 0.5W 3296 Pin 9.53mm ±10% - ±100ppm/°C - - -
RS庫存編號 167-3378
製造零件編號3296W-1-104LF
BrandBourns
HK$18.65
毎管:50 個
單位
100 kΩ Through Hole 25 Top Adjust 0.5W 3296 Pin 9.53mm ±10% - ±100ppm/°C - - -
RS庫存編號 522-2227
製造零件編號3386F-1-103LF
BrandBourns
HK$14.10
單位
10 kΩ Through Hole 1 Top Adjust 0.5W 3386 Pin 9.53mm ±10% - ±100ppm/°C - - -
RS庫存編號 169-3024
製造零件編號M43P103KB40
BrandVishay
HK$17.37
個 (以毎盒:200)
單位
10 kΩ Through Hole 20 Side Adjust 0.5W 43P Pin 20.57mm ±10% - ±100ppm/°C - - -
RS庫存編號 161-7073
製造零件編號3299W-1-501LF
BrandBourns
HK$21.39
毎管:50 個
單位
500 Ω Through Hole 25 Top Adjust 0.5W 3299 Pin 9.53mm ±10% - ±100ppm/°C - - -
RS庫存編號 474-6980
製造零件編號CT-6EP 5k Ohm
HK$9.264
/個 (每包:5個)
單位
5 kΩ Through Hole 1 Top Adjust 0.5W CT-6 Pin 7mm ±10% - ±100ppm/°C - - -
RS庫存編號 167-3387
製造零件編號3299W-1-102LF
BrandBourns
HK$21.39
毎管:50 個
單位
1 kΩ Through Hole 25 Top Adjust 0.5W 3299 Pin 9.53mm ±10% - ±100ppm/°C - - -
RS庫存編號 167-3531
製造零件編號3224W-1-103E
BrandBourns
HK$28.07
個 (在毎卷:250)
單位
10 kΩ Surface Mount 12 Top Adjust 0.25W 3224 J-Hook 4.8mm ±10% - ±100ppm/°C - - -
RS庫存編號 167-3545
製造零件編號3214W-1-103E
BrandBourns
HK$18.14
個 (在毎卷:250)
單位
10 kΩ Surface Mount 5 Top Adjust 0.25W 3214 J-Hook 4.8mm ±10% - ±100ppm/°C - - -
RS庫存編號 788-5075
製造零件編號T93YA202KT20
BrandVishay
HK$14.926
/個 (每包:5個)
單位
2 kΩ Through Hole 21 Top Adjust 0.5W T93 Pin 9.7mm ±10% - - - - -
RS庫存編號 167-3470
製造零件編號3386P-1-103LF
BrandBourns
HK$10.53
毎管:50 個
單位
10 kΩ Through Hole 1 Top Adjust 0.5W 3386 Pin 9.53mm ±10% - ±100ppm/°C - - -
RS庫存編號 521-9805
製造零件編號3296W-1-503LF
BrandBourns
HK$20.36
單位
50 kΩ Through Hole 25 Top Adjust 0.5W 3296 Pin 9.53mm ±10% - ±100ppm/°C - - -
RS庫存編號 167-5203
製造零件編號3006P-7-103LF
BrandBourns
HK$13.61
毎管:25 個
單位
10 kΩ Through Hole 15 Side Adjust 0.75W 3006 Pin 19.05mm ±10% - ±100ppm/°C - - -
RS庫存編號 167-3388
製造零件編號3299W-1-103LF
BrandBourns
HK$21.39
毎管:50 個
單位
10 kΩ Through Hole 25 Top Adjust 0.5W 3299 Pin 9.53mm ±10% - ±100ppm/°C - - -