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Through Hole Resistors

Through hole resistors are one of the most commonly used electrical components. They are typically composed of either a carbon film or ceramic-core resistor, and support up to hundreds of watts of power. One of the most common through hole resistors is the MFR100FRF73-21R. In this article, we will explore the application field and working principle of the MFR100FRF73-21R.

Application Field

The MFR100FRF73-21R is primarily used in commercial, industrial, and automotive applications. It is suitable for a wide range of applications, including power supplies, lighting systems, motor controls, and audio systems. In higher power applications, the resistor can be connected in series with other resistors, to form a larger (higher wattage) power element. It can also be used in electronic circuit design, providing a steady voltage or current level for the design.

Working Principle

At the heart of the MFR100FRF73-21R is a carbon film resistor. This type of resistor is designed to produce a specific level of resistance when exposed to a certain level of current. The resistor is composed of two conductive plates, separated by an insulating layer of carbon film or ceramic core. When current passes through the resistor, it is impeded by the resistive material, producing heat in the process. This heat is dissipated into the environment, preventing the resistor from overheating.

The MFR100FRF73-21R also features an overload protection system, designed to prevent the resistor from being damaged by short-circuits or excess current. This system includes a thermal cut-off switch, which automatically cuts off the power when the resistor temperature reaches a certain level. This protection system saves the resistor from potential damage, and helps ensure an extended service life.

Conclusion

The MFR100FRF73-21R is a very versatile resistor, designed for use in a wide range of commercial, industrial, and automotive applications. Its rugged construction and overload protection system ensure long life and reliable performance. Understanding the application field and working principle of the MFR100FRF73-21R can help engineers and technicians to better utilize the resistor when designing and building electrical/electronic systems.

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