ER1840-02JM

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Fixed inductors are important components of electronic equipment. They store energy using a wire wrapped around either a ferrite core or an air core. Fixed inductors are designed to hold their inductance over a certain range of applied frequencies and remain relatively unaffected by changes in environmental conditions. They are used in a variety of applications such as RF filters, antenna tuning, pulse generating circuits, clocks, voltage regulating circuits, and more. The ER1840-02JM is a type of fixed inductor, specifically designed to offer high efficiency, low parasitic losses, and repeatability. This article will provide an overview of the ER1840-02JM\'s application field and working principle.

Application Field

The ER1840-02JM is a high-efficiency fixed inductor that operates in the frequency range from 1MHz to 3GHz. It is specifically designed to offer extremely low levels of parasitic capacitance and inductance, allowing for more efficient operation in antenna tuning and RF filter circuits. The inductor features an output of 4.4nH, a Q factor of up to 45, and an operating frequency of 40MHz. It has a wide operating temperature range of -25°C to +85°C, making it suitable for use in automotive and industrial applications.

In addition to antenna tuning and RF filter applications, the ER1840-02JM can be used for various types of resonator circuits, voltage regulating circuits, clocks, and pulse generators. It is also ideal for antenna phasing and impedance matching circuits due to its low parasitic capacitance and inductance. The inductor is available in a variety of sizes and form factors, including a standard 5mm×5mm surface mount package.

Working Principle

The working principle of the ER1840-02JM can be broken down into two key aspects: inductance and resonance frequency. Inductance is the measure of a fixed inductor\'s ability to store energy in the form of a magnetic field. The higher the inductance, the more energy it can store and the more efficiently it can perform its intended function. The ER1840-02JM has an inductance of 4.4nH, which is enough to efficiently handle the frequencies it is designed to work with.

The other key aspect of the ER1840-02JM is the resonance frequency. The resonance frequency is the frequency at which the inductor resonates, and at this frequency, it will become particularly efficient at absorbing and storing energy. The resonance frequency of the ER1840-02JM is 40MHz, which ensures it can handle frequencies as low as 1MHz and up to 3GHz with minimal power losses.

In addition to the inductance and resonance frequency, the ER1840-02JM also offers an impressive Q factor of up to 45. The Q factor is a measure of the efficiency of the inductor over it\'s frequency range. The higher the Q factor, the more efficient the inductor is at storing energy. The Q factor of the ER1840-02JM ensures it is highly efficient at transferring energy across its operating frequency range.

Conclusion

The ER1840-02JM is a high-efficiency fixed inductor designed to offer excellent performance across a range of frequencies. It has a wide temperature range, low parasitic capacitance and inductance, and a high Q factor. This makes the ER1840-02JM ideal for antenna tuning and RF filter circuits, oscillators, resonators, voltage regulating circuits, and other similar applications. This article has provided an overview of the ER1840-02JM\'s application field and working principle.

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