SM-42A501 Allicdata Electronics
Allicdata Part #:

SM-42A501-ND

Manufacturer Part#:

SM-42A501

Price: $ 1.67
Product Category:

Potentiometers, Variable Resistors

Manufacturer: Nidec Copal Electronics
Short Description: TRIMMER 500 OHM 0.25W SMD
More Detail: 500 Ohms 0.25W, 1/4W J Lead Surface Mount Trimmer ...
DataSheet: SM-42A501 datasheetSM-42A501 Datasheet/PDF
Quantity: 1000
Moisture Sensitivity Level (MSL): 1 (Unlimited)
50 +: $ 1.52624
100 +: $ 1.46513
250 +: $ 1.40410
500 +: $ 1.15989
1000 +: $ 1.09885
5000 +: $ 0.91571
Stock 1000Can Ship Immediately
$ 1.67
Specifications
Series: SM4
Packaging: Bulk 
Moisture Sensitivity Level (MSL): --
Part Status: Active
Resistance: 500 Ohms
Power (Watts): 0.25W, 1/4W
Tolerance: ±10%
Temperature Coefficient: ±100ppm/°C
Number of Turns: 11
Adjustment Type: Side Adjustment
Resistive Material: Cermet
Mounting Type: Surface Mount
Termination Style: J Lead
Size / Dimension: Rectangular - 0.189" x 0.181" Face x 0.146" H (4.80mm x 4.60mm x 3.70mm)
Description

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Trimmer Potentiometers are a type of component used to precisely adjust electrical signals, and one such device is SM-42A501. SM-42A501 can be used in a variety of electronics applications such as radio receivers, oscilloscopes, and circuit blocks. In this article, we will discuss the application field and working principle of SM-42A501 in detail.

Overview of SM-42A501

SM-42A501 is a three-terminal trimmer potentiometer made by Seiko Instruments Incorporated. It features a tactile rotary mechanism and a resistance range of 0.1 Ω to 1 MΩ. It has a high resistance ratio and very fine adjustment capability. Its turning angle ranges from 270° to 312°, and its rated power is 1W. The device is designed to be used as an adjustable resistor in high-impedance circuits, and it has a very low temperature coefficient.

Applications of SM-42A501

SM-42A501 has many applications in a range of electronics components and devices. Some of its most common uses include:

  • Adjustable power supply – It can be used to adjust the load current in switched-mode power supplies as well as linear regulators.
  • Radio receivers – It can be used for tuning, gain adjustment, and impedance matching in radios.
  • Audio amplifiers – It can be used for gain adjustment and volume control in audio amplifiers.
  • Oscilloscopes – It can be used to adjust waveform amplitude and offset in oscilloscope displays.
  • Cellular phones – It can be used for RF performance optimization in cellular phones.
  • Test equipment – It can be used for calibration and adjustability in test equipment.
  • Circuit blocks – It can be used in circuit blocks for gain adjustment, frequency adjustment, and muting control.

Working Principle of SM-42A501

SM-42A501 is a three-terminal trimmer potentiometer with a resistance element typically constructed from conductive and non-conductive elements. It consists of a fixed resistive element that is connected to two other terminals, called the slider and the wiper. The slider is connected to one end of the fixed resistive element, while the wiper is connected to the other end. The resistance between the slider and wiper varies according to the position of the wiper, and this can be used to adjust the output signal.

The device works by connecting a voltage source to the slider and wiper terminals. When the wiper is moved, the resistance between the slider and wiper will change, resulting in a change in the output voltage. This voltage can then be used to control the output of an amplifier or other component.

The SM-42A501 also has a low temperature coefficient, which makes it suitable for use in applications where temperature variation can affect the resistance of the component. This makes it an ideal choice for use in high-impedance circuits.

Conclusion

SM-42A501 is a three-terminal trimmer potentiometer that can be used to precisely adjust electrical signals. Its use can be found in a variety of components and devices, including radio receivers, audio amplifiers, oscilloscopes, cellular phones, and circuit blocks. The device works by connecting a voltage source to the slider and wiper terminals, and its performance is unaffected by temperature variation thanks to its low temperature coefficient.

The specific data is subject to PDF, and the above content is for reference

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