ST42ETB103

Series:	ST42
Packaging:	Tape & Reel (TR)
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Resistance:	10 kOhms
Power (Watts):	0.25W, 1/4W
Tolerance:	±20%
Temperature Coefficient:	±100ppm/°C
Number of Turns:	1
Adjustment Type:	Top Adjustment
Resistive Material:	Cermet
Mounting Type:	Surface Mount
Termination Style:	Gull Wing
Size / Dimension:	Square - 0.197" L x 0.177" W x 0.091" H (5.00mm x 4.50mm x 2.30mm)

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Trimmer Potentiometers

Trimmer Potentiometers are widely used in electronic circuits control applications. The ST42ETB103 is a kind of trimmer potentiometer commonly used in such applications. This article will focus on describing the application field and working principle of the ST42ETB103 trimmer potentiometer.The ST42ETB103 is a rotary trimmer potentiometer which features four terminals for connecting to the power and electronic circuit. It is typically used in the adjustment of power supply circuits and amplifier circuits and for setting the reference voltage and amplification factor. The electrical characteristics of the trimmer potentiometer are: rated power 0.2W, resistance range 0.1-10KΩ, linear resistance tolerance ±20%, and rated resistance at mid-rotation 0.5KΩ.The ST42ETB103 uses a conductive plastic layer as a resistive element with the terminals arranged symmetrically around a rotary shaft. The shaft can be turned by either a manual knob or a screwdriver to adjust the resistance. When the shaft is rotated, the resistance value changes linearly across the full rotation range. The most common application of the ST42ETB103 is as an adjustable resistance in a voltage divider circuit.In addition to the adjustable resistance, the ST42ETB103 also has a mechanical mechanism for locking the shaft in a specific position. It has a simple locking pin mounted on the rear of the PC board, which fits into any number of pre-drilled holes in the potentiometer\'s shaft. When engaged, this locking pin prevents the shaft from being rotated.The ST42ETB103 is a highly reliable device, which is designed to maintain its performance over long periods of use and exposure to extreme heat or cold. It is also designed to withstand dust and moisture, making it suitable for outdoor applications.In summary, the ST42ETB103 trimmer potentiometer is a widely used adjustable resistance device in both commercial and industrial applications. It has a simple working principle and the mechanical locking pin provides some measure of security against unauthorized use. The resistive element is resistant to extreme temperatures and dust and moisture, thus making it suitable for outdoor applications.

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