SP1812R-103J

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Fixed inductors are components that have been designed to store electrical energy in a magnetic form. These inductors have a wide range of applications in all sorts of electronics, from simple voltage-regulating circuits to complex power supplies. In this article, we’ll discuss the application field and working principle of the SP1812R-103J fixed inductor.

SP1812R-103J Overview

The SP1812R-103J inductor is a small power inductor intended for applications in portable devices such as mobile phones, laptops, and other wireless gadgets. The device’s components include a ferrite core with a copper conductor and a nylon cover. This fixed inductor has a rated voltage of 21.6 V, a DC coil resistance of 15.1 ohms, an induction voltage of 7.2 Vrms, and a total capacity of 30.0 µH. The inductor is compliant with JIS standard and has a maximum inductance at ±20% tolerance.

Application Field

This inductor is most commonly used in DC/DC converters and power circuits, where it’s used to convert DC voltage from one level to another. Its low-profile construction and stable performance support high-efficiency voltage conversion, which makes it an ideal choice for portable gadgets that require effective power management and efficient energy storage. Additionally, the inductor can be used in other applications, such as automotive electronics, engine control units, power inverters, and other consumer and industrial equipment.

Working Principle

The working principle of an inductor is based on the principle of electromagnetic induction. When the inductor is subjected to a varying electric current, the magnetic field created by the current induces an electromotive force in the coil, resulting in an induced current. This induced current opposes the original current, causing an opposing magnetic field that reduces the current to the original value. In the case of a fixed inductor, this opposing magnetic field serves to limit the flow of electric current, allowing for greater control and safety.

Conclusion

The SP1812R-103J fixed inductor is an efficient and reliable component that can be used in a variety of DC/DC converter and power circuit applications. It can be used to convert DC voltage from one level to another, as well as to provide effective power management and efficient energy storage. Its low-profile construction and stable performance make it an ideal choice for portable devices, automotive electronics, and a range of consumer and industrial applications.

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