HF1008R-820J

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Fixed Inductors

A fixed inductor is an electronic component used in various circuit designs. The component possesses a coil of wire in various shapes and sizes and the coil contains an electrical core. The coil is known as a windings of the inductor.

Fixed inductors are used widely in electrical circuit designs. These components are used for electromagnetic interference (EMI) filtering and to provide impedance matching in order to transmit power efficiently. Furthermore, they are effectively used as input filter systems to increase the output voltage. The fixed inductors also play a key role in supplying power to real-time clock circuits in devices and are used extensively in power supplies.

HF1008R-820J Application Field and Working Principle

The HF1008R-820J is a fixed inductor manufactured by Hirose. It is primarily used in EMI filters and is hence suitable for operation in a wide variety of situations. The inductor is classified as a Ferrite bead inductor that is ideal for high-density mounting, making it a perfect component for use in multiple circuit boards, as it can save a lot of space.

The concept of an inductor is that it resists changes in current. As the magnitude of the current changes, an opposing force is applied counteracting the change in current flow. As a result, energy is stored in the component in the form of a magnetic field. This energy is ‘built up’ or stored within the device and is released when the current stops. The principle of operation of an inductor is simple; an electric current is passed through the coil winding of the component, which creates a magnetic field. This magnetic field tends to resist the flow of current.

This inductor has a resistance of 820 ohms, which means that it can handle a relatively large amount of current while producing comparatively low amounts of voltage. Apart from EMI filters, the inductor is used as an input common-mode filters, output common-mode filters, ESD protection and LCD bias powers as well. And due to its built-in ferrite bead, it is very effective in suppressing high-frequency noises/interference from external sources.

In conclusion, the HF1008R-820J fixed inductor is an ideal component for applications where a relatively high amount of current needs to be passed through the component with low voltage. The component is suitable for high-density circuit boards, as it can save space, and is commonly used for EMI filters. The inductor mainly works by applying an opposing force when the magnitude of the current changes, thus creating a magnetic field that stores energy.

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