PR02FS0204708KR500

Through Hole Resistors, such as the PR02FS0204708KR500, are electronic components typically designed to resist an applied voltage in a circuit. They are one of the most common passive electronic components and come in two types: carbon compositions and metal films. Though its basic design is the same, each type has different applications and operating principles.

Carbon Composition Resistors

Carbon composition resistors are made from a combination of carbon particles and other binders such as clay. The design of these resistors usually consists of a cylindrical body, a metal terminal at each end and a colour coded band wrapped around one of the terminals. The characteristics of this type of resistor include low cost, low power dissipation capabilities and reasonable temperature stability. However, its tolerance and stability will deteriorate significantly over time.

Metal Film Resistors

Metal film resistors are constructed of a metal film, such as nickel, applied to a ceramic base material. This type of resistor is more expensive than the carbon composition resistor but offers greater stability, accuracy and low noise operation. They are widely used in high precision applications such as medical equipment, instrumentation and high-end audio components.

PR02FS0204708KR500

The PR02FS0204708KR500 is a metal film resistor with a resistance of 0.5 ohm and a rated power of 4.7W. It is capable of dissipating heat generated from its applications and is ideal for high temperature/high power applications such as a motor control system. The cylindrical body of the PR02FS0204708KR500 is coated in a white compound for easier identification and is also designed to reduce the risk of damage during handling.

Working Principle

The working principle of a through hole resistor is quite simple and involves the conversion of electrical energy into heat. When a voltage is applied to the resistor, it will create a current which is inversely proportional to the amount of resistance. The resistor then dissipates this energy as heat in order to reduce the current in the circuit. This is how the resistor controls the current flow in a circuit.

Conclusion

Through hole resistors such as the PR02FS0204708KR500 are essential components in many electronic circuit designs. They are usually inexpensive, and provide simple but effective control over current flow. The specific components and operation principles will vary according to the type of resistor but the overall goal remains the same: to reduce electrical current and provide electrical stability.