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Through Hole Resistors - W7M39R0J Application Field and Working Principle

Through hole resistors are passive components that are most commonly used in electronic circuits. As the name implies, they use a hole in the component to allow external current to pass through, thus creating resistance. W7M39R0J is one type of through hole resistor, and it has some special features. This article will discuss the application field and working principle of this component.

What is W7M39R0J?

W7M39R0J is a multi turn, through hole resistor that has a carbon composition resistor housed in an alumina ceramic body. The resistor features a square shape with a round disc in the center. The resistor is made by winding carbon composition material around a central core. This resistor is commonly used in power supplies, switch-mode power supplies and other specialized applications that require high wattage resistors.

Application Field and Working Principle

W7M39R0J is primarily used in high wattage applications, such as in switch-mode power supplies and power management systems. The resistor works by creating a resistance to passing electric current, thus converting electrical energy into heat energy. The resistor also acts as a voltage regulator, further reducing the overall voltage output. Additionally, the resistor can be used to limit current in a circuit.

The wattage rating of the W7M39R0J is the amount of heat energy that the resistor can safely dissipate without overheating. This is important to consider when choosing a resistor, as it ensures the resistor does not exceed its maximum wattage rating. The W7M39R0J is rated for up to 150 watts of power.

The resistor also has some unique features which make it well-suited for high wattage applications. These include the relatively low temperature coefficient, which allows the resistor to maintain its resistance over a wide range of temperatures. Additionally, the shape of the resistor is designed to improve the dissipation of heat.

Finally, the ceramic body of the W7M39R0J also has a higher thermal conductivity than other resistors, further enhancing its heat dissipation capabilities. This allows the resistor to operate safely at higher wattages than many other resistors can.

Conclusion

Through hole resistors, such as the W7M39R0J, are essential components for high wattage applications, such as power supplies and power management systems. The resistor works by creating a resistance to electric current, thus converting it into heat energy. The unique features of the W7M39R0J allow it to be a reliable and durable resistor, suitable for a wide range of applications.

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