MFR25SFRF52-523K

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Introduction

Through hole resistors, commonly known as TH resistors, are an absolutely essential component of electrical and electronic circuits, primarily used to limit current flow, divide voltages, adjust signal levels, and modify the shape of waveforms. This article seeks to shed light on the application field and working principle of MFR25SFRF52-523K, one of the most popular types of through hole resistors.

Application Field

As a through hole resistor, MFR25SFRF52-523K can be found in various applications, ranging from motor control to circuit protection. In particular, MFR25SFRF52-523K is widely used for adjustable current limiting, dynamic braking, and low-speed switching in motor control systems; over- or under-voltage protection in high current systems; collector termination in switching power supplies; adjustable timing and output control in liquid level controllers; frequency control in signal generators; and waveform generation and control in signal and power electronics.

Working Principle

A through hole resistor consists of a set of metal plates arranged in a line or spiral. By varying the resistance of each plate, the total resistance can be adjusted. In addition, two or more resistors can be connected in series or parallel to further adjust the total resistance. The MFR25SFRF52-523K resistor is composed of five plates, each made of a different metal (which is determined according to its resistance and temperature coefficient). For example, one plate might be made of copper (Cu), another of nickel (Ni) and so on. The plates are separated by a non-conductive layer, such as a mica insulator, which prevents them from making direct contact. This prevents electrical current from flowing through the resistor and ensures that the resistance remains constant over time.

Conclusion

Through hole resistors have a wide variety of applications, from motor control to circuit protection. The MFR25SFRF52-523K is one of the most popular types of through hole resistors and is composed of five metal plates separated by an insulator. By varying the resistance of each plate, the total resistance of the resistor can be adjusted. By connecting multiple resistors in series or parallel, the total resistance can be further adjusted.

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