ELJ-QE4N7DFA Inductors, Coils, Chokes

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Fixed inductors are circuit components composed of a coil that stores energy from a current. The ELJ-QE4N7DFA is a device specifically designed for this purpose, and is commonly used in applications like cellular phones, cordless phones, and notebook PCs. This article will explore the application field and working principle of the ELJ-QE4N7DFA fixed inductor.

Application Field

The ELJ-QE4N7DFA fixed inductor is a general purpose device that is suitable for use in a variety of applications. It features high efficiency characteristics, making it an ideal component for medium power applications. In particular, it is well suited for applications in switching regulators, DC-DC converters, chip scale packages, and reverse-bias protection circuits.

In particular, the ELJ-QE4N7DFA is widely used in the current-mode and voltage-mode switching regulators commonly found in cellular phones, cordless phones, and notebook PCs. It is also a popular component in the power supplies, batteries, and other electronic devices that require high-efficiency power conversion. The ELJ-QE4N7DFA is also used in pulse width modulation (PWM) controllers and switching regulators employed in low power applications.

Working Principle

The ELJ-QE4N7DFA fixed inductor operates by creating an electromagnetic field when large current flows through its windings. As the current increases, the magnetic field surrounding the inductor grows, causing an opposition to the change of current. This resistance to current change is known as inductance and is measured in henries. The inductance of the ELJ-QE4N7DFA is rated at 4.7µH, making it an ideal component for high efficiency and low power applications.

The ELJ-QE4N7DFA fixed inductor is designed to handle high voltage and high frequency currents. It features an I-RMS rating of 1.0A and a voltage rating of 10V. These ratings make the device suitable for applications that require high voltage and fast switching. It is also designed with a high saturation current of 1.5A, making it suitable for applications that require high current.

In addition, the ELJ-QE4N7DFA fixed inductor is constructed with an Alumina core, which reduces core loss and improves efficiency. It also offers superior thermal resistance, ensuring that the component remains cool during operation. The ELJ-QE4N7DFA also features a low DC resistance of 0.6Ω, ensuring minimal power dissipation.

In summary, the ELJ-QE4N7DFA fixed inductor is a highly efficient component designed for use in medium power applications like switching regulators, DC-DC converters, chip scale packages, and reverse-bias protection circuits. It features a high inductance rating, a high saturation current and a low DC resistance, making it suitable for applications that require high voltage and fast switching. Its high thermal resistance ensures that the component remains cool during operation.

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