ELC-18E222

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Fixed inductors refer to electrical components that store energy in the magnetic field when current passes through them. In general, they cannot change the inductance with the changing of the current. Fixed inductors can be divided into two categories: wire-wound and non-wound. The winding of wire-wound inductors can be made of copper-clad aluminum, iron-core or air-core. The core of the non-wound inductor is usually ferrite, while the winding is made of copper wire. Most fixed inductors can be divided into two categories: power inductors and HF/RF inductors.

As for the ELC-18E222 fixed inductor, it belongs to the high frequency / radio frequency (HF/RF) inductor. The ELC-18E222 is a radial leaded, surface mount inductor with a wide variety of application fields, and is manufactured using advanced thin-film winding technology. It is referred to as ELC-18E222 because it has an inductance range of 0.18 to 22 μH, a rated current of 0.45A and a self-resonant frequency of 1.4GHz. This type of inductor is mainly used in high frequency filter circuits.

The working principle of the ELC-18E222 fixed inductor is based on Faraday\'s law of electromagnetic induction. This law states that when a conductor is placed in a changing magnetic field, an electric current is induced in the conductor, which is proportional to the rate of change of the magnetic field. Therefore, when a current passes through the ELC-18E222 inductor, a magnetic field is generated around it. This magnetic field leads to a voltage drop across the inductor, which is proportional to the rate of change of current, and thus the energy is stored in the magnetic field.

The ELC-18E222 fixed inductor is also able to operate at high frequencies and at high temperatures. It is encapsulated with an epoxy resin and has an impedance matching network with good shielding effect. Moreover, it has a low DCR and a high current operation, which provides good efficiency and can efficiently filter out high-frequency and low-frequency interference. Its low ACR also protects the electronic equipment from damage caused by high frequencies. All these features make the ELC-18E222 an ideal part for high-frequency filtering circuits.

In conclusion, the ELC-18E222 fixed inductor is a type of HF/RF inductor that is widely used in high-frequency filtering circuits due to its advanced features. This inductor works on the principle of Faraday\'s law of electromagnetic induction, and uses an epoxy resin for encapsulation, along with an impedance matching network for shielding purposes. Its low DCR and high current operation make it an ideal part for the purpose of filtering out high-frequency and low-frequency interference.

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