HKQ04023N5B-E

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Fixed Inductors

Fixed Inductors are components that are used to generate flux in electronic circuits and systems. They are classified into two main categories: Inductor and Coil. An Inductor consists of a wire, usually a copper or aluminum wire, that is wound around a ferromagnetic material. This ferromagnetic material is then either placed in a pot core or a block core to increase its inductance. The inductance it generates is proportional to the number of turns of the wire. On the other hand, a coil is an inductor device consisting of two conductive wires wound or twisted together. When current is passed through it, a magnetic field is generated.

The HKQ04023N5B-E is an Fixed Inductor developed by Holtek semiconductor. It is a miniature SMD type inductor designed for supplying power to low-power portable devices such as cellular phones, laptops, portable media players, and other similar devices. It is constructed with an ultra small ceramic housing and has an internal trim capacitor which allows for precision adjustment of the inductance and suppression of magnetic field interference. Its rated power is up to 1.5 W.

Application Field and Working Principle

The HKQ04023N5B-E Fixed Inductor is mainly used for supplying power to low-power portable devices such as cellular phones, laptops, portable media players, and other similar electronic products. It is suitable for use in high frequency circuits such as DC-DC converters, power supply circuits, and RF circuits. Its working principle is based on Faraday’s Law of Electromagnetic Induction that states that when a conductor is placed in a magnetic field and an electric current is passed through it, a magnetic field is created around the conductor. This magnetic field, in turn, induces a voltage in the conductor which is proportional to the rate of change of the magnetic field. With the passage of the current, the induced voltage in the conductor opposes the applied voltage of the current.

In the case of the HKQ04023N5B-E Fixed Inductor, the magnetic field is generated when the current flows between the coated wire and the core. This magnetic field induces the current in the conductor and the resulting voltage opposes the applied voltage. Thus, the current flow in the device is regulated and stabilized to prevent surge and to achieve reliable power supply.

The HKQ04023N5B-E Fixed Inductor also features a good ESR (Equivalent Source Resistance) performance and a low DAC (Differential Amplitude Coefficient) ratio. Its ESR performance allows it to power up devices at high frequencies and low temperatures. Its low DAC ratio maintains its high frequency operating capability. The device has a rated power up to 1.5 W and is suitable for applications with power supply requirements between 2.9 and 5.5 VDC.

The HKQ04023N5B-E Fixed Inductor provides good performance, reliability, and stability for low-power applications. Its miniature size and trimming capability makes it suitable for a wide range of applications. Its excellent ESR performance and low DAC ratio ensures reliable power supply and prevents surge from occurring.

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