ST42EH205

Trimmer Potentiometers (also referred to as trimpots) are a class of adjustable, panel-mounted potentiometers used in electronic circuits to adjust voltage, current, or other electrical characteristics. The ST42EH205 is a trimmer potentiometer designed for high-end applications offering enhanced performance and reliability.

The ST42EH205 is a single-turn, axial-leaded device with a wide tolerance of ±0.025%. It features an anti-resonance design with ultra-low noise output and low jitter. It also reduces temperature drift variations, improving overall reliability. The device’s package size measures 2.5mm x 5.0mm with a 0.5mm pitch.

The ST42EH205’s desirability among applications lies in its ability to offer precise adjustment with good linearity. Its zero-hysteresis design minimizes the amount of voltage that needs to be applied to achieve a given output level. Additionally, it has great low-end stability with an extended temperature range of -55°C to +125°C and adjustable resistance from 100Ω to 250Ω.

The ST42EH205 trimmer potentiometer offers superior performance with its monolithic construction which eliminates mechanical connections and makes the device resistant to shock and vibration. It is also designed to operate in environments with dust, moisture, and elevated temperatures. Typical applications include integrated circuits, flash memory, operational amplifiers, and amplifiers with high-frequency signals.

In terms of its working principle, when the adjustable element (rotor) of the ST42EH205 is turned, an electric field cuts the semiconductor die which causes a resistance value to change. In this way, the adjusted current supplied to the device is proportionally distributed between the endpoints of the device, providing precise adjustment.

The ST42EH205 trimmer potentiometer offers superior performance, offering precise adjustment with good linearity and extended temperature range in a monolithic package. With its anti-resonance design, it is ideal for high-end applications such as integrated circuits, flash memory, operational amplifiers, and amplifiers with high-frequency signals.