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 172-4532
製造零件編號EVM1DSX30B15
BrandPanasonic
HK$4.339
個 (在毎卷:1000)
單位
- Surface Mount 1 Top Adjust 0.2W EVM1D Solder Pad 3.8mm ±25% - ±250ppm/°C - - -
RS庫存編號 726-3813
製造零件編號EVM1DSX30B15
BrandPanasonic
HK$3.098
/個 (每包:5個)
單位
100 kΩ Surface Mount 1 Top Adjust 0.2W EVM1D Solder Pad 3.8mm ±25% - ±250ppm/°C - - -
RS庫存編號 726-3807
製造零件編號EVM1DSX30B14
BrandPanasonic
HK$3.05
/個 (每包:5個)
單位
10 kΩ Surface Mount 1 Top Adjust 0.2W EVM1D Solder Pad 3.8mm ±25% - ±250ppm/°C - - -
RS庫存編號 172-3714
製造零件編號EVMAASA00B54
BrandPanasonic
HK$2.54
個 (以毎盒:1000)
單位
- Through Hole 1 Top Adjust 0.3W EVMAA Pin 7.8mm ±25% - ±200ppm/°C - - -
RS庫存編號 726-3810
製造零件編號EVM1DSX30B54
BrandPanasonic
HK$3.098
/個 (每包:5個)
單位
50 kΩ Surface Mount 1 Top Adjust 0.2W EVM1D Solder Pad 3.8mm ±25% - ±250ppm/°C - - -
RS庫存編號 106-8292
製造零件編號EVM3WSX80B14
BrandPanasonic
HK$4,345.20
毎卷:3000 個
Reel(s)
10 kΩ Surface Mount 1 Top Adjust 0.15W EVM3W Solder Pad 3.1mm ±25% - ±250ppm/°C - - -
RS庫存編號 106-8523
製造零件編號EVM3YSX50B13
BrandPanasonic
HK$2,365.72
毎卷:2000 個
Reel(s)
1 kΩ Surface Mount 1 Top Adjust 0.15W EVM3Y Solder Pad 3.1mm ±25% - ±250ppm/°C - - -
RS庫存編號 172-4531
製造零件編號EVM1DSX30B54
BrandPanasonic
HK$3.946
個 (在毎卷:1000)
單位
- Surface Mount 1 Top Adjust 0.2W EVM1D Solder Pad 3.8mm ±25% - ±250ppm/°C - - -
RS庫存編號 729-9664
製造零件編號EVM2WSX80B54
BrandPanasonic
HK$2.03
/個 (每包:5個)
單位
50 kΩ Surface Mount 1 Top Adjust 0.15W EVM2W Solder Pad 2.2mm ±25% - ±250ppm/°C - - -
RS庫存編號 726-3829
製造零件編號EVM1DSX30B16
BrandPanasonic
HK$6.22
/個 (每包:5個)
單位
1 MΩ Surface Mount 1 Top Adjust 0.2W EVM1D Solder Pad 3.8mm ±25% - ±250ppm/°C - - -
RS庫存編號 729-9869
製造零件編號EVM3WSX80B52
BrandPanasonic
HK$8.38
/個 (每包:5個)
單位
500 Ω Surface Mount 1 Top Adjust 0.15W EVM3W Solder Pad 3.1mm ±25% - ±250ppm/°C - - -
RS庫存編號 729-9667
製造零件編號EVM2WSX80B14
BrandPanasonic
HK$1.60
/個 (每包:5個)
單位
10 kΩ Surface Mount 1 Top Adjust 0.15W EVM2W Solder Pad 2.2mm ±25% - ±250ppm/°C - - -
RS庫存編號 729-9610
製造零件編號EVM2NSX80B53
BrandPanasonic
HK$1.584
/個 (每包:5個)
單位
5 kΩ Surface Mount 1 Top Adjust 0.15W EVM2N Solder Pad 2.2mm ±25% - ±250ppm/°C - - -
RS庫存編號 106-7951
製造零件編號EVM3WSX80B54
BrandPanasonic
HK$6,735.06
毎卷:3000 個
Reel(s)
50 kΩ Surface Mount 1 Top Adjust 0.15W EVM3W Solder Pad 3.1mm ±25% - ±250ppm/°C - - -
RS庫存編號 726-3860
製造零件編號EVMAASA00B25
BrandPanasonic
HK$1.828
/個 (每包:5個)
單位
200 kΩ Through Hole 1 Top Adjust 0.3W EVMAA Pin 7.8mm ±25% - ±200ppm/°C - - -
RS庫存編號 731-2883
製造零件編號EVM3YSX50B14
BrandPanasonic
HK$3.17
/個 (每包:5個)
單位
10 kΩ Surface Mount 1 Top Adjust 0.15W EVM3Y Solder Pad 3.1mm ±25% - ±250ppm/°C - - -
RS庫存編號 172-4154
製造零件編號EVM1DSX30B16
BrandPanasonic
HK$3.67
個 (在毎卷:1000)
單位
- Surface Mount 1 Top Adjust 0.2W EVM1D Solder Pad 3.8mm ±25% - ±250ppm/°C - - -
RS庫存編號 726-3804
製造零件編號EVM1DSX30B53
BrandPanasonic
HK$3.098
/個 (每包:5個)
單位
5 kΩ Surface Mount 1 Top Adjust 0.2W EVM1D Solder Pad 3.8mm ±25% - ±250ppm/°C - - -
RS庫存編號 172-3697
製造零件編號EVM3YSX50B54
BrandPanasonic
HK$1.885
個 (在毎卷:2000)
單位
- Surface Mount 1 Top Adjust 0.15W EVM3Y Solder Pad 3.1mm ±25% - ±250ppm/°C - - -
RS庫存編號 731-2864
製造零件編號EVM3YSX50B22
BrandPanasonic
HK$4.184
/個 (每包:5個)
單位
200 Ω Surface Mount 1 Top Adjust 0.15W EVM3Y Solder Pad 3.1mm ±25% - ±250ppm/°C - - -