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 161-7077
製造零件編號3386G-1-104LF
BrandBourns
TWD42.10
毎管:50 個
單位
100 kΩ Through Hole 1 Top Adjust 0.5W 3386 Pin 9.53mm ±10% - ±100ppm/°C - - -
RS庫存編號 177-453
製造零件編號3224W-1-102E
BrandBourns
TWD191.40
/個 (每包:5個)
單位
1 kΩ Surface Mount 12 Top Adjust 0.25W 3224 J-Hook 4.8mm ±10% - ±100ppm/°C - - -
RS庫存編號 167-9514
製造零件編號M70Y103KB25
BrandVishay
TWD1,682.50
個 (以毎盒:50)
單位
10 kΩ Through Hole 20 Side Adjust 1W 70Y Pin 33.53mm ±10% - ±100ppm/°C - - -
RS庫存編號 796-4939
製造零件編號3214J-1-102E
BrandBourns
TWD108.00
單位
1 kΩ Surface Mount 5 Side Adjust 0.25W 3214 J-Hook 4.8mm ±10% - ±100ppm/°C - - -
RS庫存編號 172-4461
製造零件編號EVM2NSX80B13
BrandPanasonic
TWD10.80
個 (在毎卷:3000)
單位
- Surface Mount 1 Top Adjust 0.15W EVM2N Solder Pad 2.2mm ±25% - ±250ppm/°C - - -
RS庫存編號 186-053
製造零件編號M70Y103KB25
BrandVishay
TWD2,363.00
單位
10 kΩ Through Hole 20 Side Adjust 1W 70Y Pin 33.53mm ±10% - ±100ppm/°C - - -
RS庫存編號 162-243
製造零件編號M43P203KB40
BrandVishay
TWD76.00
單位
20 kΩ Through Hole 20 Side Adjust 1/2W 43P Pin 20.57mm ±10% 4.83mm ±100ppm/°C 6.35mm 20.57 x 4.83 x 6.35mm -
RS庫存編號 522-0079
製造零件編號3296Y-1-103LF
BrandBourns
TWD98.00
單位
10 kΩ Through Hole 25 Top Adjust 0.5W 3296 Pin 9.53mm ±10% - ±100ppm/°C - - -
RS庫存編號 461-7135
製造零件編號TC33X-2-103E
BrandBourns
TWD7.30
/個 (每包:50個)
單位
10 kΩ Surface Mount 1 Top Adjust 0.1W TC33 Solder Pad 3mm ±25% - ±250ppm/°C - - -
RS庫存編號 729-9608
製造零件編號EVM2NSX80B13
BrandPanasonic
TWD11.80
/個 (每包:5個)
單位
1 kΩ Surface Mount 1 Top Adjust 0.15W EVM2N Solder Pad 2.2mm ±25% - ±250ppm/°C - - -
RS庫存編號 167-3530
製造零件編號3224W-1-502E
BrandBourns
TWD111.20
個 (在毎卷:250)
單位
5 kΩ Surface Mount 12 Top Adjust 0.25W 3224 J-Hook 4.8mm ±10% - ±100ppm/°C - - -
RS庫存編號 788-4105
製造零件編號PVA2A104A01R00
BrandMurata
TWD8.00
單位
100 kΩ Surface Mount 1 - 0.1W PVA2 Solder Pad 2.2mm ±25% - ±250ppm/°C - - -
RS庫存編號 177-475
製造零件編號3224W-1-502E
BrandBourns
TWD191.40
/個 (每包:5個)
單位
5 kΩ Surface Mount 12 Top Adjust 0.25W 3224 J-Hook 4.8mm ±10% - ±100ppm/°C - - -
RS庫存編號 166-9937
製造零件編號3214J-1-102E
BrandBourns
TWD59.40
個 (在毎卷:500)
單位
1 kΩ Surface Mount 5 Side Adjust 0.25W 3214 J-Hook 4.8mm ±10% - ±100ppm/°C - - -
RS庫存編號 522-0215
製造零件編號3296Y-1-502LF
BrandBourns
TWD98.00
單位
5 kΩ Through Hole 25 Top Adjust 0.5W 3296 Pin 9.53mm ±10% - ±100ppm/°C - - -
RS庫存編號 167-3465
製造零件編號3386F-1-504LF
BrandBourns
TWD41.70
毎管:50 個
單位
500 kΩ Through Hole 1 Top Adjust 0.5W 3386 Pin 9.53mm ±10% - ±100ppm/°C - - -
RS庫存編號 167-3405
製造零件編號3296Y-1-103LF
BrandBourns
TWD74.30
毎管:50 個
單位
10 kΩ Through Hole 25 Top Adjust 0.5W 3296 Pin 9.53mm ±10% - ±100ppm/°C - - -
RS庫存編號 167-3549
製造零件編號TC33X-2-103E
BrandBourns
TWD3.80
個 (在毎卷:2500)
單位
10 kΩ Surface Mount 1 Top Adjust 0.1W TC33 Solder Pad 3mm ±25% - ±250ppm/°C - - -
RS庫存編號 167-3234
製造零件編號3224G-1-203E
BrandBourns
TWD91.20
個 (在毎卷:500)
單位
20 kΩ Surface Mount 12 Side Adjust 0.25W 3224 Gull Wing 4.8mm ±10% - ±100ppm/°C - - -
RS庫存編號 169-3025
製造零件編號M43P203KB40
BrandVishay
TWD59.70
個 (以毎盒:200)
單位
20 kΩ Through Hole 20 Side Adjust 0.5W 43P Pin 20.57mm ±10% - ±100ppm/°C - - -