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Fixed Inductors

Fixed inductors are a type of electronic component designed to create and store a specific amount of inductance. Inductance is the measure of a magnetic field produced by an electric current — the more product an inductor has, the larger its magnetic field. The inductance of an inductor is measured in units of henry (H).

One type of fixed inductor is the 4922R-22J, which is an axial-type inductor that is designed for use in communications and other types of electronic circuits. It is a fixed inductor, meaning its inductance property does not vary with other components. Fixed inductors are typically used in applications requiring stable inductance values, such as analog signals, harmonic filters, switching regulators, and more.

4922R-22J Application Field and Working Principle

The 4922R-22J is ideal for applications such as high-speed digital communication, high frequency amplifiers, and immunity protection. It is especially useful in signal, RF, and data communication circuits due to its superior small signal stability, low DC resistance, high current carrying capability, and self-healing properties.

The 4922R-22J is composed of a ferrite core which is used to store the magnetic flux generated by an electric current, and hollow copper winding which transport the current. When the electric current passes through the copper winding, it gets circulated and produces a magnetic flux that is stored within the ferrite core. This in turn creates a voltage across the inductor, opposing any change in current. In other words, the inductor works to increase the current flow resistance.

The 4922R-22J provides high inductance values with minimal field decrease at high frequencies, making it suitable even for circuits operating in the high GHz range. Its ability to vary in DC resistance, high current carrying capability, and high peak current ratings enable it to perform optimally even in harsh conditions. Additionally, it has excellent temperature dependence and temperature stability which makes it suitable for use at varying temperatures and in high-discharge environments.

Due to its excellent performance and cost-effectiveness, the 4922R-22J is widely used in communication, computing, consumer electronics, and medical devices. It is available in a variety of construction forms including solderable axial, solderable radial, and surface mount technology (SMT).

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