MPR20A4R7J

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Through Hole Resistors are a kind of electronic components. They are usually composed of two or more insulated metal or semiconductor elements, which, when connected to a circuit, create a resistance path. The amount of resistance created by a particular Through Hole Resistor depends on its type, which can be distinguished by its size and color. One such Through-Hole Resistor is the MPR20A4R7J.

The MPR20A4R7J is a four-band resistive device featuring two metal and two semiconductor elements. It has a standard lead size of 0.120” (3.05 mm). Its maximum operating temperature is +125°C. Its average power dissipation is 1/4 Watts.

The MPR20A4R7J is mainly used in audio circuits, power distribution circuits, and signal amplification circuits. Generally, when used as a resistor in an audio circuit, it attenuates the audio signal, ensuring that the correct level and balance is established. In a power distribution circuit, it protects the system from overloads. In a signal amplification circuit, it functions to provide a precise signal level, avoiding distortions in the signal.

The Basic Working Principle

When voltage is applied across the two terminals of the resistor, electric current builds up as an electromotive force (EMF) in the form of a potential difference between those two points. This is due to the electrical resistance in the resistor\'s semiconductor elements, which restricts the flow of electric current. Hence, the MPR20A4R7J can be used to control the voltage and current levels in circuits.

The alternating current (AC) in circuits varying in characteristics such as magnitude and frequency will cause a resistance change. For instance, the MPR20A4R7J is designed to produce a low resistance in higher frequency applications, and will therefore likely be used when a higher frequency AC is present. Additionally, because of this property, resistors such as the MPR20A4R7J are commonly used to measure the frequency of AC signals in circuits.

In summary, the MPR20A4R7J, as a Through Hole Resistor, is primarily used in audio circuits, power distribution circuits, and signal amplification circuits, to attenuate audio signals, protect the system from overloads, and provide precise signal levels. Its working principle revolves around the concept of electric resistance, as the resistor\'s semiconductor elements produce an electromotive force to restrict the flow of electric current when a voltage is applied across its two terminals.

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