ST42EC104

Series:	ST42
Packaging:	Bulk
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Resistance:	100 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:	Through Hole
Termination Style:	PC Pins
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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Introduction to Trimmer Potentiometers and ST42EC104

Trimmer potentiometers are adjustable resistors whose resistance can be adjusted or “trimmed” over a specified range. They are also known as trimmers, trimpots, trim pots or simply ‘pots’. They are typically used to adjust signal levels in RF circuits, set bias levels in amplifiers, or whenever a circuit requires an adjustable resistance.Trimmer potentiometers are typically smaller than regular potentiometers and come in a variety of shapes and sizes. They also come in both through-hole and surface mount packages.The ST42EC104 is a trimmer potentiometer from STMicroelectronics. It is a 4-terminal, single-turn, linear-taper device that offers an adjustable resistance range of 0-500 Ω, a current rating of 5 mA, and a voltage rating of 50 V. The ST42EC104 is available in an ultra-small 8-pin DIP package, making it ideal for use in tight spaces.

Applications of ST42EC104 Trimmer Potentiometer

The ST42EC104 trimmer potentiometer can be used in a variety of applications, including:1. Setting the bias levels in amplifiers: the ST42EC104 trimmer potentiometer can be used to set the bias levels in amplifiers in order to optimize performance and stability.2. Adjusting the signal levels in RF circuits: the ST42EC104 trimmer potentiometer can be used to adjust the signal levels in RF circuits in order to ensure maximum signal strength and quality.3. Adjusting the sensitivity of sensors: the ST42EC104 trimmer potentiometer can be used to adjust the sensitivity of sensors in order to ensure accurate readings.4. Adjusting the brightness of LED displays: the ST42EC104 trimmer potentiometer can be used to adjust the brightness of LED displays in order to enhance visibility.5. Adjusting the current limits on motor controllers: the ST42EC104 trimmer potentiometer can be used to adjust the current limits on motor controllers in order to protect the motor from damage.

Working Principle of ST42EC104 Trimmer Potentiometer

The ST42EC104 trimmer potentiometer is a linear-taper device. This means that the resistance is linearly related to the angle of the potentiometer\'s shaft. As the shaft is turned, the resistance changes linearly until it reaches its maximum value (500 Ω for the ST42EC104). The resistance of the device is determined by the position of the wiper. The wiper is a spring-loaded contact that moves along a resistive track. As the wiper moves along the track, it comes into contact with the various resistive elements that make up the device. These resistive elements are typically made of a conductive metal such as copper or silver. The resistance of the ST42EC104 trimmer potentiometer is adjusted by an external knob or screwdriver. As the external knob or screwdriver is turned, it causes the wiper to move along the resistive track, thus changing the resistance of the device.

Conclusion

The ST42EC104 trimmer potentiometer is a small, 4-terminal, single-turn, linear-taper device that offers an adjustable resistance range of 0-500 Ω. It is ideal for use in tight spaces and can be used in a variety of applications, such as setting the bias levels in amplifiers, adjusting the signal levels in RF circuits, adjusting the sensitivity of sensors, adjusting the brightness of LED displays, and adjusting the current limits on motor controllers. The working principle of the ST42EC104 trimmer potentiometer is based on the linear relationship between resistance and angle of the potentiometer\'s shaft. The resistance is adjusted by an external knob or screwdriver that causes the wiper to move along the resistive track, thus changing the resistance of the device.

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