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 168-0257
製造零件編號409VA103M
HK$7.382
個 (在毎卷:1000)
單位
10 kΩ Through Hole 1 Side Adjust 0.5W 409 Pin 9mm ±20% - ±250ppm/°C - - -
RS庫存編號 652-4697
製造零件編號409VA103M
HK$13.57
單位
10 kΩ Through Hole 1 Side Adjust 0.5W 409 Pin 9mm ±20% - ±250ppm/°C - - -
RS庫存編號 652-4259
製造零件編號416PA101M
HK$5.24
/個 (每包:10個)
單位
100 Ω Through Hole 1 Top Adjust 0.2W 416 Pin 6.8mm ±20% - ±250ppm/°C - - -
RS庫存編號 168-0369
製造零件編號416PA101M
HK$3.964
個 (在毎卷:1000)
單位
100 Ω Through Hole 1 Top Adjust 0.2W 416 Pin 6.8mm ±20% - ±250ppm/°C - - -
RS庫存編號 473-518
製造零件編號CB10LH473M
HK$1.89
/個 (每包:5個)
單位
47 kΩ Through Hole 1 Side Adjust 0.15W CB10 Pin 9.8mm ±20% - ±500ppm/°C - - -
RS庫存編號 164-8113
製造零件編號3142W104P
HK$9.503
個 (在毎卷:800)
單位
100 kΩ Surface Mount 1 Top Adjust 0.15W 3142 Tab 4mm ±25% - ±250ppm/°C - - -
RS庫存編號 753-6802
製造零件編號3142W104P
HK$12.15
單位
100 kΩ Surface Mount 1 Top Adjust 0.15W 3142 Tab 4mm ±25% - ±250ppm/°C - - -
RS庫存編號 164-3578
製造零件編號3142W103P
HK$8.98
個 (在毎卷:800)
單位
10 kΩ Surface Mount 1 Top Adjust 0.15W 3142 Tab 4mm ±25% - ±250ppm/°C - - -
RS庫存編號 652-4322
製造零件編號416PA501M
HK$3.359
/個 (每包:10個)
單位
500 Ω Through Hole 1 Top Adjust 0.2W 416 Pin 6.8mm ±20% - ±250ppm/°C - - -
RS庫存編號 168-0952
製造零件編號416MA104P
HK$3.71
個 (在毎卷:1000)
單位
100 kΩ Through Hole 1 Top Adjust 0.2W 416 Pin 6.8mm ±25% - ±250ppm/°C - - -
RS庫存編號 753-6812
製造零件編號3142W203P
HK$11.57
單位
20 kΩ Surface Mount 1 Top Adjust 0.15W 3142 Tab 4mm ±25% - ±250ppm/°C - - -
RS庫存編號 186-154
製造零件編號PC910 1K RS
HK$109.28
單位
1 kΩ Through Hole 1 Top Adjust 1W PC910 Pin - ±20% - - - - -
RS庫存編號 652-4445
製造零件編號416XA503P
HK$5.14
/個 (每包:10個)
單位
50 kΩ Through Hole 1 Side Adjust 0.2W 416 Pin 6.8mm ±25% - ±250ppm/°C - - -
RS庫存編號 168-0385
製造零件編號3204X502P
HK$9.082
個 (在毎卷:1000)
單位
5 kΩ Surface Mount 1 Top Adjust 0.1W 3204 J-Hook 5mm ±25% - ±250ppm/°C - - -
RS庫存編號 652-4243
製造零件編號416MA504P
HK$5.884
/個 (每包:10個)
單位
500 kΩ Through Hole 1 Top Adjust 0.2W 416 Pin 6.8mm ±25% - ±250ppm/°C - - -
RS庫存編號 172-8312
製造零件編號PC910 470K RS
HK$69.57
個 (以毎盒:300)
單位
- Through Hole 1 Top Adjust 1W PC910 Pin - ±20% - - - - -
RS庫存編號 652-4805
製造零件編號3213X103M
HK$22.554
/個 (每包:5個)
單位
10 kΩ Surface Mount 1 Top Adjust 0.125W 3213 J-Hook 3.4mm ±20% - ±100ppm/°C - - -
RS庫存編號 754-2126
製造零件編號3203X503P
HK$24.53
單位
50 kΩ Surface Mount 1 Side Adjust 0.05W 3203 Tab 3.4mm ±20% - ±100ppm/°C - - -
RS庫存編號 652-4748
製造零件編號3213X502M
HK$12.326
/個 (每包:5個)
單位
5 kΩ Surface Mount 1 Top Adjust 0.125W 3213 J-Hook 3.4mm ±20% - ±100ppm/°C - - -
RS庫存編號 163-8560
製造零件編號PC910 4K7 RS
HK$65.158
個 (以毎盒:100)
單位
4.7 kΩ Through Hole 1 Top Adjust 1W PC910 Pin - ±20% - - - - -