ST42EH200

Series:	ST42
Packaging:	Bulk
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Resistance:	20 Ohms
Power (Watts):	0.25W, 1/4W
Tolerance:	±20%
Temperature Coefficient:	±250ppm/°C
Number of Turns:	1
Adjustment Type:	Side Adjustment
Resistive Material:	Cermet
Mounting Type:	Surface Mount
Termination Style:	Gull Wing
Size / Dimension:	Rectangular - 0.197" x 0.177" Face x 0.224" H (5.00mm x 4.50mm x 5.70mm)

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Introduction

Trimmer potentiometers are small adjustable resistors commonly used in electronics for a variety of applications. They are also known as trimpots or trimmers. ST42EH200 is one of such trimmer potentiometers, and its application field and working principle are discussed in detail in this article.

Application fields

ST42EH200 is mainly used to adjust voltage or resistance. One of the typical applications is to adjust the gain of an amplifier circuit. It is also used to calibrate the frequency of a resonator circuit, and adjust the sensitivity of a sensor circuit. Moreover, ST42EH200 can also be used in position or speed feedback loops to adjust the transfer function of a system. Moreover, this type of trimmer potentiometers can be found in light dimmers, radio receivers and transmitters, and many other electronic devices.

Working principle

Like other trimpots, ST42EH200 consists of a resistive element and a slider that is attached to a wiper arm. When the slider is moved along the resistive element, it produces a change in the resistance. This change in resistance is used to adjust the voltage or current required for various applications. The total resistance of the ST42EH200 is 200 Ohms. Positioning the slider at its center will result in the marker reading 100 Ohms. When the wiper arm is at the terminal end of the resistive element, the marker reads 0 Ohms. This resistor is sealed and shielded to ensure long life and reliable operation.

Conclusion

In conclusion, ST42EH200 is a trimmer potentiometer that is mainly used to adjust the voltage or resistance in various electronic systems. Its working principle is quite simple. It consists of a resistive element and a slider that is attached to a wiper arm. It is sealed and shielded to ensure long life and reliable operation. ST42EH200 is commonly used to adjust the gain of an amplifier circuit, calibrate the frequency of a resonator circuit, adjust the sensitivity of a sensor circuit, and adjust the transfer function of a system. It can also be found in light dimmers, radio receivers and transmitters, and many other electronic devices.

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