IHB6BV220K

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Fixed inductors, also known as chokes or coils, are passive electronic components designed to store energy in the form of a magnetic field when current passes through the component\'s coil. The IHB6BV220K is one such fixed inductor and is designed for a variety of electronic applications. This article will outline the properties of the IHB6BV220K and how it is employed in various applications as well as discussing the working principle of a fixed inductor in general.

Applications of the IHB6BV220K

The IHB6BV220K is a small, surface mount adjustable inductor from an electronic components manufacturer Murata. It is 3320uH rated inductor with a maximum DC current of 200mA. This parts DCR of 0.3 ohm and high shielding factor make it ideally suited to a variety of applications. These include filters for video signals, mobile phone filters, as well as EMI suppression in equipment like smartphones, tablets, and more.

This inductor is also employed for power line noise suppression. It is particularly useful for power supplies with low-noise amplifiers (LNAs) or for applications which require high-speed switching. The IHB6BV220K has a high-precision characteristics which renders it ideal for such applications, as it can maintain a stable and constant inductance value even when a large current is passed through it.

Working Principle of Fixed Inductors

The fundamental principle behind a fixed inductor is the law of induction, discovered by Michael Faraday in 1831. The law states that a current passing through a coil creates a surrounding magnetic field and, inversely, a time varying magnetic field applied to a coil will generate a current in the same coil. This occurs because the changing flux of a magnetic field induces an electromotive force (EMF) in the coil.

When a current is passed through the inductor’s coil, lines of flux will form, with each line like a loop. As they start to move outward, a back-EMF will be formed, opposing the current. This is known as counter-electromotive force and is analogous to the drag forces a rocket experiences as it moves through air and is directly proportional to the rate of change of flux.

Thus, the inductance, L, is equal to the counter-EMF developed which, in turn, produces an opposing force to the current. This EMF forces the current to move slowly, so that over a certain period of time, the flux can build up before dissipating. For a coil with many turns/windings, the resulting EMF is higher, causing a higher counter-electromotive resistance.

A fixed inductor can be thought of as an energy storage device, as it stores energy in the form of a magnetic field. This energy is discharged when the device is no longer energised and it is this mechanism which is employed in many electronic products today to produce the desired results.

Conclusion

The IHB6BV220K is a small, surface mount adjustable inductor from Murata and is ideally suited to a variety of filtering applications. Its high shielding factor, low DCR, and wide inductance range makes it a useful component for applications such as video signal filters, mobile phone filters, power line noise suppression, and more. The IHB6BV220K features high-precision characteristics which allows it to maintain a stable and constant inductance value when a large current is passed through it.

The working principle of a fixed inductor can be explained in terms of Faraday’s law of induction, as it relies on the creation of a magnetic field, when current passes through a coil. The resulting back-EMF generated opposes the current, giving rise to the inductance which, in turn, forces the current to move slowly so that flux can build up over a certain period of time before dissipating. This makes fixed inductors useful for energy storage applications.

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