Trimmer Potentiometers

Trim Pots: Adjust, Tune, and Calibrate Circuits

A trimmer potentiometer, also known as a trim pot, is a type of variable resistor or adjustable potentiometer that can adjust, tune, and calibrate circuits. These trimmer resistors are often used to initially calibrate equipment after manufacturing. TE offers a Citec trimmer potentiometers engineered with radial-leaded or surface mount of various power rating and resistance.

A trimmer potentiometer is meant to never be seen or adjusted by the device’s user.  Unlike many other variable controls, trimmer resistors are mounted directly on circuit boards and tuned with a small screwdriver or knob, or will have extended shafts that can be turned by fingers. Trim pots are rated for very few adjustments over their lifetime. A trim pot is often used to initially calibrate equipment after manufacturing. Trim pots are commonly used in A/V components and may require adjustment when the equipment is being serviced.