ER1025-02JR

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Fixed Inductors

Inductors, commonly referred to as coils, are passive components that are widely used in electronic circuits. They are used to store energy in magnetic fields and are often used in filtering, tuning, and matching circuits. Fixed inductors are commonly found in fixed electric circuits, such as radio and TV reception systems, communication systems, and power supply systems for computers, audio players, and other electrical items.

ER1025-02JR Application Field and Working Principle

The ER1025-02JR fixed inductor is one of the most widely used fixed inductors. It is also an M series filter inductor made of an enameled copper wire. The two-pin rectangular terminal footing is composed of a black nylon material with a metal marking disk. It is 0.8mm in size and is suitable for use within Class 2 limits.

This M series filter inductor is designed for signal line protection and signal line filtering applications. Its working principle is that the inductor will pass the direct current (DC) without generating a resistance, but it will generate a certain resistance for the alternating current (AC) so that the AC signal cannot be easily passed. The inductor works together with the capacitor to form a low-pass filter circuit, which can be used to limit the frequency band of the signal to be transmitted and filter out the noise.

The working voltage of the ER1025-02JR fixed inductor is 50V, and its rated current is 4A. Its resistance is 31mΩ, and its inductance is 2.2μH. The typical frequency range is 0.2-300MHz. It also has a very high Q value, which can reach up to 16.9dB. This allows the inductor to achieve higher efficiency and accuracy when used in filters.

The ER1025-02JR fixed inductor also has low transmission loss and high insertion loss. It can reduce the mutual interference of signals and improve the signal attenuation ratio. At the same time, it has a good temperature resistance and can work well even at high temperature. This makes it a popular choice for use in audio power amplifiers.

In short, the ER1025-02JR fixed inductor is suitable for use in various signal line protection and filtering applications. Its working principle is that it can pass direct current (DC) without generating any resistance but can generate a certain resistance for the alternating current (AC), so that the AC signal cannot be easily passed. The inductor has a low resistance, a high Q value, and a wide working frequency range, and it can reduce the mutual interference of signals and improve the signal attenuation ratio.

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