S0402-4N7J2

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Fixed Inductors are among the oldest and most common passive components in electrical circuits, used in a wide variety of applications ranging from low-frequency power supply and filtering to high-frequency circuits. The S0402-4N7J2 is a popular example of a fixed inductor, combining both the flexibility and proven reliability that engineers have come to rely on. In this article, we’ll take a look at the application field of the S0402-4N7J2 and its working principle.

Application Field

The S0402-4N7J2 is a surface-mount fixed inductor, which is commonly used in power supplies, filters, and high-frequency circuits. It is designed to reduce circuit noise, as well as provide stable operation of the circuit by filtering out high-frequency noise. Thus, these components are often used in switching regulator circuits, as well as for RF or small-signal applications.

The S0402-4N7J2 has a small profile of just 0.04’’ (1.017 mm) x 0.02’’ (0.508 mm) x 0.02’’ (0.508 mm), making it suitable for applications with limited space. Because of the high reliability and low cost of the S0402-4N7J2, it is often used in mass production, especially in consumer electronics.

Working Principle

The working principle of the S0402-4N7J2 is based on its ability to store energy within its inductive core. This energy is stored in the form of a magnetic field, which rapidly changes in magnitude when a current is applied. As the magnitude of the magnetic field changes, it induces a voltage in the coil, which then produces a current in the circuit.

By varying the number of turns in the coil and the amount of iron in its core, the inductance of the S0402-4N7J2 can be adjusted. The inductance of the component determines the amount of voltage induced in the coil when a current is applied, as well as how quickly the current flows. By controlling the inductance of the component, engineers can regulate the flow of electricity in the circuit, helping to minimize noise and improve the stability of circuits.

Conclusion

The S0402-4N7J2 is an example of a surface mount fixed inductor, which is highly reliable and easy to use. It is commonly used in power supplies, filters and high-frequency circuits, providing both noise reduction and circuit stability. The working principle of the S0402-4N7J2 is based on its ability to store energy in its inductive core, allowing the inductance to be adjusted to control the current flow in the circuit. For this reason, the S0402-4N7J2 continues to be one of the most popular fixed inductors in the industry.

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