SC414MF-220

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Fixed inductors, also commonly known as coils or chokes, are electronic components that store energy in the form of a magnetic field. These components are composed of a medium such as metal, ceramic or air wound around a core. Fixed inductors are typically seen used in situations where current or voltage needs to be regulated, such as in electronic circuits. The type and number of turns on the core which determines the inductance or opposition to voltage, is chosen by the designer or engineer to satisfy the application requirement.

The SC414MF-220 fixed inductor is a small surface-mount component particularly designed for use in miniature applications that require a high stability of inductance under environmental conditions as well as high energy storage. No external DC current is required to maintain the magnetic field, making this component ideal for applications needing a continuous magnetic field. The inductor is typically used in digital audio player circuits, portable DVD player circuits, and automotive electronics.

This component has a maximum inductance value of 220uH, with a rated current of 1.4A. It has an extremely low DCR value of 0.07ohms, making it ideal for applications that require a low resistance. The temperature coefficient is also very low, with a value of ±30ppm/°C. The inductor uses a square core material for optimal frequency characteristics, and has polyolefin tape as a spacer.

The inductor works through the principle of induced EMF, otherwise known as Faraday’s law of induction. Essentially, when there is a change in current, an EMF is induced according to the equation:

  EMF = -N(dc/dt)

Where N is the number of turns, and dI/dt is the change with respect to time. This results in an induced voltage opposing the original current. This phenomenon is known as inductance, and is measured in units of Henrys (or Henries). The fact that inductance is connected to current helps to explain why components that utilize this principle have a tendency to regulate/control current.

The SC414MF-220 component takes advantage of this principle by having a number of turns on a core, thus having a pre-determined inductance value. As current and voltage changes, the opposition due to the inductance is proportional and acts to resist these changes, thus regulating them. This makes the SC414MF-220 very useful in providing a consistent supply of current and voltage.

In conclusion, the SC414MF-220 fixed inductor is a small surface-mount component specifically designed for miniature applications that conduct precision operations under environmental conditions. This inductor, like other fixed inductors, utilizes Faraday’s law of induction which states that a change in current results in an induced EMF. This induced EMF acts as a resistance to the current and results in a regulation of current and voltage, thus providing an output supply that is consistent with the input. The SC414MF-220 inductor is commonly used in digital audio player circuits, portable DVD player circuits, and automotive electronics.

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