LQH44NN1R0M03L

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Fixed Inductors

A fixed inductor (LQH44NN1R0M03L) is a type of passive electronic component, which stores energy in the form of a magnetic field when an electrical current is applied. The inductance is determined by the number of turns per unit length, the cross-sectional area of the core, and the properties of the core material.

Fixed inductors are mainly used in electronic circuits, such as filtering, resonance circuits, current-sensing circuits, motor drives, and power supplies, to control electrical current or voltage, or prevent interference. They are also used in high-frequency applications, such as crossovers for loudspeakers, radios and television receivers.

Working principle: When an alternating current is applied, a winding composed of several turns of wire forms a magnetic field around the core of the inductor. This core can be made of ferrite, powdered iron, or air. As the alternating current passes through the windings, the magnetic field from the core produces an opposing magnetic field, which stores energy. This opposition to the changing current is known as inductance.

As the frequency of the alternating current increases, the opposing magnetic field increases, creating a higher impedance and therefore greater power loss. Conversely, as the frequency decreases, the opposing magnetic field decreases and the impedance decreases, leading to greater power loss. This phenomenon is known as the skin effect.

The inductance of the fixed inductor is determined mainly by the core material, the number of turns per unit length, and the cross-sectional area of the core. The inductance is usually measured in micro-henries.

In addition to providing inductance in circuits, fixed inductors can also be used for high-frequency applications such as crossovers for loudspeakers, radios and television receivers. The inductors are usually made of ferrite wire or powdered iron cores in these applications because of their ability to reduce interference.

Fixed inductors are widely used in power conversion circuits, snubber circuits, noise reduction circuits, charge pump circuits, current-sensing circuits, and many other digital and analog circuits. They are also commonly used in automotive applications such as motor drives, fuel injection systems, and hybrid powertrains.

Fixed inductors are reliable, low-cost components that are widely used in electronics and telecommunications. They are a necessary and important component of many devices, and are critical for efficient circuit operation.

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