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Through Hole Resistors

MRS25000C1373FC100 is an example of a through hole resistor. Through hole resistors are resistors with two small metal leads that are passed through a cylindrical hole in the circuit board, soldered, and the remainder of the lead is trimmed off. This type of resistor is reliable and stable due to the fact that the resistor is locked on the PCB with solder, and is also easily replaced due to its widespread availability.

Application Field of Through Hole Resistors

Through hole resistors are commonly used in high-volume manufacturing applications, like within the automotive and electronics industries. They are not only used because of their reliability but also because they can handle high-power applications. They provide a wide variety of resistance levels, from about zero ohms up to more than two million ohms. Additionally, through hole resistors are typically used as current-limiting resistors for transistors, voltage-dividing resistors, or for noise isolation.

Working Principle of Through Hole Resistors

Like any type of resistor, through hole resistors reduce the flow of current by providing opposition when a current is passed through them. When an electric current passes through the resistor it creates a voltage drop across it, which is inversely proportional to its resistance. To put it simply, the higher the resistance of the resistor, the smaller the voltage drop. The resistor is manufactured in order to have a specified amount of measured resistance when measured directly across the its two electrical connections.

The resistance of a through hole resistor depends on a few factors, the most important being the physical size of the resistor. Through hole resistors come in a variety of shapes and sizes and the larger the resistor, the higher the resistance it will typically provide. Other factors that affect the resistance include the material the resistor is made of, the number of turns or legs the resistor has, and the temperature it is operating in. Resistors can also be adjustable so that the resistance can be adjusted to suit the specific needs of an application.

Conclusion

Through hole resistors are a reliable and widely available type of resistor that provide a wide range of resistance levels and can handle high-power applications. A through hole resistor works by providing opposition when a current is passed through it, creating a voltage drop that is inversely proportional to its resistance. The size of the resistor, material it is made of, the number of legs it has, and the temperature it is operating in can all affect the resistance of the resistor, making them ideal for a wide variety of applications.

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