ST42ETH500

Series:	ST42
Packaging:	Tape & Reel (TR)
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Resistance:	50 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:	Square - 0.197" L x 0.177" W x 0.224" H (5.00mm x 4.50mm x 5.70mm)

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Introduction to Trimmer Potentiometers

Trimmer potentiometers are variable resistors which help to adjust, calibrate and set up electrical circuits. It is commonly known as ‘trim pot’ or ‘preset’ due to its wide usage for fine adjustment of the resistance in the circuits. These trimmer potentiometers are used in almost all circuits because of their small size and adjustable parameters.

The ST42ETH500

The ST42ETH500 is one of the well-known trimmer potentiometer series from ALPS. It is designed with a small size, excellent linearity and high-speed operation. It has an all-in-one package which includes a number of features such as multi-turn, single turn, surface mount and through holes. The series also features locking ability to help users adjust the resistance and provide reliable and accurate operation.

Application fields of the ST42ETH500

Given its design, trimmer potentiometers such as ST42ETH500 are applicable in many circuits. Some of the application areas where these devices are widely used are as follows:

• In Audio equipment – In audio equipment, trimmer potentiometers such as the ST42ETH500 can be used for controlling the bass, treble, mid-range, loudness and balance levels.
• In Instrumentation – The ST42ETH500 is widely used in instrumentation applications for controlling the size and weight of the instrument, as well as for calibrating and adjusting parameters such as gain and offset.
• For Motor Control – Motor controllers need adjustment of speed and direction and these trimmer potentiometers are perfect for the job, due to its tight control.
• Slide & Volume Potentiometers – These are versatile components which can be used for a wide range of audio applications, such as volume control, balance, tone control, and bass control.

Working Principle of ST42ETH500

Trimmer potentiometers such as the ST42ETH500 consist of three terminals, namely the input, the output, and the wiper. The input and output terminals are usually connected to a voltage source and the wiper is connected to an adjustable resistor. The resistance between the input and output terminals is controlled by adjusting the wiper.When the ST42ETH500 is adjusted, the wiper moves relative to the resistor. This movement of the wiper changes the resistance between the input and output terminals, resulting in a change in the output voltage of the adjustable resistor. By changing the wiper\'s position, a different value of resistance can be obtained.

Conclusion

Trimmer potentiometers such as the ST42ETH500 are becoming increasingly popular due to their small size and excellent linearity. They are used in nearly every circuit where a fine adjustment is needed to calibrate and set up the parameters. The ST42ETH500 is an excellent example of a trimmer potentiometer which provides excellent control over the resistance and precise operation.

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