ELL-3GM120M Inductors, Coils, Chokes

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Fixed inductors are components of an electrical circuit that store energy and induction, and they play an important role in both analog and digital systems. The ELL-3GM120M is one of those components and belongs to the family of fixed inductors. This paper will cover the fields of application and working principle of the ELL-3GM120M.

Application Field

The ELL-3GM120M is typically used for switching power supplies, LED lighting, and other applications that require low equivalent series resistance (ESR) and good temperature stability. It is well-suited for working with switching frequencies up to 260kHz, and one of its special features is its broad range of inductance values. It is available in different inductance values ranging from 0.1uH to 220uH and has a very low ferrite saturation current rating of 1.8A. It also features an operating temperature range from -40ºF to 185ºF and an excellent temperature and humidity resistance, which makes it ideal for applications that require extreme environmental conditions.

Working Principle

The ELL-3GM120M is composed of two cores, made out of ferrite and ceramic material, that are assembled in a compact package. Each of these cores separately stores energy and helps magnetic induction. As current flows through one of the cores, the ferrite material becomes magnetized and creates a magnetic field that then induces a current in the second core. This induced current in the second core is in opposition to the current in the first core, and this is how the ELL-3GM120M is able to store energy and maintain induction.

In addition to the inductance of the ELL-3GM120M, the core material and the design of its package plays an important role on its performance. The ferrite material of the core provides very low ESR when compared to other cores, and the package design helps dissipate heat and also minimizes the leakage field, which allows for a higher current rating and inductance range without saturation.

Conclusion

In conclusion, fixed inductors are important components of electronic systems, and the ELL-3GM120M is one of those components. It is well-suited for applications that require low ESR and high temperature stability and it utilizes two cores, made out of ferrite and ceramic material, to store energy and maintain induction. The ferrite material of the core provides very low ESR, and the design of the package helps dissipate heat and minimize the leakage field, all of which allows for better performance and reliability of the ELL-3GM120M.

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