NFR25H0006807JR500 Resistors

Through-hole resistors are electronic components used to control the flow of electric current passing through a circuit, usually with the help of a board of resistors. The NFR25H0006807JR500 is a through-hole resistor made by a company called Wurth Elektronik. It is a high-precision, nickel-plated, 25 ohm resistor with a maximum operating temperature of 125°C (257°F).

Application Field

The NFR25H0006807JR500 is well-suited for use in many different applications, including electrical engineering, automotive, and audio/video systems. Its high precision and stability make it ideal for applications requiring precise current control at high power levels. For example, the resistor is often used in power-amplifier circuits as current-limiting resistors. It is also often used in relay circuits to control currents that are too high for the relay switch to handle. The NFR25H0006807JR500 is also suitable for many diode-resistor networks, where it can act as the cathode resistor.

Working Principle

When an electric current is applied to a through-hole resistor, heat is generated inside the resistor due to the resistance to the current. The amount of heat generated depends on the magnitude of the current and the amount of resistance provided by the resistor. The NFR25H0006807JR500 has a 25-ohm resistance, which means that it will generate a large amount of heat when carrying a current of 4 amperes or higher. To prevent the resistor from overheating, its maximum operating temperature is stated as 125°C (257°F). If the temperature reaches this level, it is likely that the resistor will be damaged, and the circuit it is part of will be unable to function properly.

The NFR25H0006807JR500 also has a built-in thermistor, which helps to regulate its temperature. A thermistor is a resistor whose resistance changes depending on the amount of heat present. By constantly adjusting its resistance to the current, the thermistor helps to keep the temperature of the resistor from exceeding the stated limit. This feature helps to ensure that the resistor does not fail prematurely due to overheating.