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 167-3377
製造零件編號3296W-1-103LF
BrandBourns
TWD65.10
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 521-9647
製造零件編號3296W-1-103LF
BrandBourns
TWD111.00
單位
10 kΩ Through Hole 25 Top Adjust 0.5W 3296 Pin 9.53mm ±10% - ±100ppm/°C - - -
RS庫存編號 167-4674
製造零件編號3314J-1-103E
BrandBourns
TWD38.70
個 (在毎卷:500)
單位
10 kΩ Surface Mount 1 Top Adjust 0.25W 3314 J-Hook 4.5mm ±20% - ±100ppm/°C - - -
RS庫存編號 691-7409
製造零件編號3314J-1-103E
BrandBourns
TWD70.60
/個 (每包:5個)
單位
10 kΩ Surface Mount 1 Top Adjust 0.25W 3314 J-Hook 4.5mm ±20% - ±100ppm/°C - - -
RS庫存編號 474-9024
製造零件編號RJ-13P 20k Ohm (203)
TWD166.00
單位
20 kΩ Through Hole 1 Top Adjust 0.75W RJ-13 Pin - ±10% - ±100ppm/°C - - -
RS庫存編號 167-3436
製造零件編號3386G-1-103LF
BrandBourns
TWD41.70
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 522-2485
製造零件編號3386G-1-103LF
BrandBourns
TWD97.00
單位
10 kΩ Through Hole 1 Top Adjust 0.5W 3386 Pin 9.53mm ±10% - ±100ppm/°C - - -
RS庫存編號 522-2479
製造零件編號3386G-1-102LF
BrandBourns
TWD54.00
單位
1 kΩ Through Hole 1 Top Adjust 0.5W 3386 Pin 9.53mm ±10% - ±100ppm/°C - - -
RS庫存編號 167-3434
製造零件編號3386G-1-102LF
BrandBourns
TWD41.70
毎管:50 個
單位
1 kΩ Through Hole 1 Top Adjust 0.5W 3386 Pin 9.53mm ±10% - ±100ppm/°C - - -
RS庫存編號 691-2621
製造零件編號3302X-3-103E
BrandBourns
TWD13.80
/個 (每包:5個)
單位
10 kΩ Surface Mount 1 Top Adjust 0.15W 3302 Solder Pad 2.2mm ±25% - ±250ppm/°C - - -
RS庫存編號 521-9883
製造零件編號3296X-1-105LF
BrandBourns
TWD111.00
單位
1 MΩ Through Hole 25 Side Adjust 0.5W 3296 Pin 11.05mm ±10% - ±100ppm/°C - - -
RS庫存編號 522-2520
製造零件編號3386G-1-203LF
BrandBourns
TWD56.00
單位
20 kΩ Through Hole 1 Top Adjust 0.5W 3386 Pin 9.53mm ±10% - ±100ppm/°C - - -
RS庫存編號 167-3498
製造零件編號3296X-1-105LF
BrandBourns
TWD62.10
毎管:50 個
單位
1 MΩ Through Hole 25 Side Adjust 0.5W 3296 Pin 11.05mm ±10% - ±100ppm/°C - - -
RS庫存編號 161-7078
製造零件編號3386G-1-203LF
BrandBourns
TWD42.10
毎管:50 個
單位
20 kΩ Through Hole 1 Top Adjust 0.5W 3386 Pin 9.53mm ±10% - ±100ppm/°C - - -
RS庫存編號 167-3541
製造零件編號3214W-1-102E
BrandBourns
TWD74.10
個 (在毎卷:250)
單位
1 kΩ Surface Mount 5 Top Adjust 0.25W 3214 J-Hook 4.8mm ±10% - ±100ppm/°C - - -
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 186-047
製造零件編號M70Y502KB25
BrandVishay
TWD2,363.00
單位
5 kΩ Through Hole 20 Side Adjust 1W 70Y Pin 33.53mm ±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 167-3528
製造零件編號3224W-1-102E
BrandBourns
TWD126.90
個 (在毎卷:250)
單位
1 kΩ Surface Mount 12 Top Adjust 0.25W 3224 J-Hook 4.8mm ±10% - ±100ppm/°C - - -
RS庫存編號 167-9513
製造零件編號M70Y502KB25
BrandVishay
TWD1,682.50
個 (以毎盒:50)
單位
5 kΩ Through Hole 20 Side Adjust 1W 70Y Pin 33.53mm ±10% - ±100ppm/°C - - -