LK21251R2K-T

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Fixed Inductors

Fixed inductors are widely used in electronic circuits due to their ease in producing a specific inductance and high quality factor. The LK21251R2K-T is an example of a fixed inductor which is commonly used in various applications. This article will discuss the application fields of the LK21251R2K-T and the working principle of the device.

Application Field

The LK21251R2K-T is an inductor with a value of 2.2uH, and is mainly used in power supply circuits that require high surge current capabilities. This device has a high quality factor of about 3.9, which allows it to store a high amount of energy when power is applied. Additionally, the inductor has an operating temperature range of -40°C to +85°C, making it ideal for use in automotive or other temperature-critical applications.

The LK21251R2K-T is also commonly used in power conversion circuits such as DC-DC converters or DC-AC inverters. In these types of circuits, it serves the purpose of smoothening out the incoming voltage to reduce the amount of noise in the circuit.

The device can also be used as an input filter in audio and other line-level signals. The inductor helps to filter out any high frequency noise that may be present in the signal, ensuring a clean and accurate reproduction of sound.

Working Principle

The LK21251R2K-T utilizes the principle of Faraday’s law in order to create its inductance value. Faraday’s law states that an induced voltage can be generated when a changing magnetic field is placed inside a conductive loop. As a result, the inductor is constructed from a tightly wound coil of wire, producing the desired magnetic field.

The amount of inductance created by the device is determined by the amount of wire used and the size of the core material that is placed in the center of the winding. The core is made from a ferromagnetic material, such as iron, that is capable of creating and supporting a magnetic field. This material increases the inductance by concentrating the magnetic field in the center of the coil.

The amount of current that the device can handle is determined by the number of windings and the width of the wire itself. The LK21251R2K-T can handle as many as 3 amps of continuous current, and up to 6 amps during short, high-current surges.

Conclusion

The LK21251R2K-T is a fixed inductor that is mainly used in power supplies and power conversion circuits. It utilizes Faraday’s law to create its inductance, and is capable of handling up to 6 amps of current during short surges. Additionally, it has an operating temperature range of -40°C to +85°C, making it suitable for automotive or other temperature-sensitive applications.

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