ST42ETA504

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Trimmer potentiometers are a type of variable resistor, also known as a trim pot. They are mounted on the board and set by a screwdriver or other tool when the circuit\'s calibration is performed. ST42ETA504 is a very capable trimmer potentiometer. It is designed to give a precision adjustment for setting condition for critical part of circuit.

Applications

ST42ETA504 is widely used in the electronics industry for volume control, test equipment, digital potentiometers, and a variety of other applications in instrumentation and audio control. It is also used in amplifiers, receivers, electronic clocks, and test equipment. Due to its high precision, accuracy and stability, ST42ETA504 can also be used as the primary adjusting element in digital potentiometers. In the medical industry, they are used in hospital equipment such as respirators, medical monitoring and control systems, and pediatric incubators.

Working Principle

ST42ETA504 works on the principle of spring loaded contacts. A moveable contact is mounted over a resistor element on a rotor. The electrical contact is on the resistor element. As the moveable contact is rotated, it presses against the resistor element, creating a variable resistance. The resistance value is determined by adjusting the position of the moveable contact to either increment or decrement the resistance in the circuit. The resistance can be set by a trim pot at the desired value by using a screwdriver or other tool.

The ST42ETA504 is equipped with patented spring design that provides reliable, accurate and consistent contacts. It has a low contact resistance of 1mΩ max, a high temperature range from -40°C to +100°C, and a power rating of 2000V for more reliable and robust operations. The spring design makes the ST42ETA504 able to survive more than 500,000 cycles with contact resistance change less than +-3% for every 10 cycles.

Advantages

ST42ETA504 trimmer potentiometer offers many advantages that make it the ideal choice for certain projects. Its simple design and low cost makes it highly desirable for projects where cost is a major factor. The adjustable resistance range is quite wide, from 2Ω to 10kΩ, and it has an acceptable coefficient of temperature which ranges from -40°C to +145°C. The ST42ETA504 is highly reliable, accurate and stable and is a very capable trimmer potentiometer. It is a sensible choice for any application where a reliable adjustable resistance is needed.

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