SP1812-182K

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Fixed inductors, or inductors, are devices composed of one to several windings wrapped around a magnetic core. One or more electrical contacts, known as terminals, are connected to the winding. SP1812-182K inductors are one such product with a variety of applications. This article provides an overview of the SP1812-182K’s application field and its working principle.

Application Field

The SP1812-182K is a low-profile inductor and boasts an operating temperature range of -40° to +85°C. It is mainly used in DC/DC converters, power supplies, and other circuit applications. It features high current capability for a product of its size, a very low temperature coefficient, and a wide inductance range (10µH─1.0mH). These attributes make it particularly well suited for a variety of electronics applications, including portable computers, cell phones, electronic gaming accessories, etc.

Working Principle

The core of the SP1812-182K inductor is composed of a ferrite or metal core, which is used as an inductor in order to store magnetic energy. The operation of an inductor is based on the principle of electromagnetic induction. When a current passes through the coil, a magnetic field is created which induces a “back EMF”, or opposing voltage, within the inductor. The magnitude of the “back EMF” is dependent on the size and shape of the coil, and the magnitude of the current passing through it. This back EMF acts as a “local” voltage source, and provides an additional voltage drop as current passes through the inductor. This additional voltage drop limits the rate at which current can pass through the inductor, thus allowing the inductor to act as a filter to smooth out current and voltage spikes. This is how SP1812-182K inductors are able to provide stable current and voltage delivery in their application field.

Conclusion

The SP1812-182K is a fixed, low-profile inductor with a wide range of applications. Its attributes of temperature stability, high current capability, and a wide inductance range, make it particularly well-suited for applications such as portable computers, cell phones, and electronic gaming accessories. The inductor works based on the principle of electromagnetic induction, where a magnetic field is created which induces a “back EMF”, which limits the current passing through it and provides stability. This article has provided a brief overview of the SP1812-182K’s application field and working principle.

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