1210R-121H

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Fixed inductors are inductors designed to provide a fixed value of inductance over a range of frequencies. Generally designed for DC applications, such as power supply decoupling and motor starting, fixed inductors often have inductance values determined by their construction. This is particularly useful in many applications due to their DC-current-limiting properties.

The 1210R-121H fixed inductor, in particular, is a wide-band inductor designed for use in SMPS, DC-DC converter, RF amplifier and other electronics applications. This fixed inductor features a ferrite core with a maximum DC resistance of 0.2 ohm. Its inductance value is a very stable 30µH.

The working principle of the 1210R-121H fixed inductor is based on its core material, which is the reason it can offer a fixed inductance over a wide range of frequencies. This core is typically made of either iron or ferrite, both of which are highly permeable substances. Ferrite is especially useful for fixed inductors, as its permeability is very stable over a wide range of frequencies and temperatures. This uniform permeability results in a highly consistent inductance value across a variety of conditions.

Including this device in a circuit can help filter out unwanted high-frequency noise and reduce the potential for circuit switching noise. It can also help reduce the amount of power lost as heat when high current is passed through the inductor. Additionally, the 1210R-121H inductor can be used in very high-frequency circuits, with an inductance value that remains constant up to 1MHz.

In general, the 1210R-121H fixed inductor is a versatile component, with wide applications in power supply decoupling, inductive reactance, RF amplifiers and DC-DC converters. Thanks to its ferrite core, it can maintain a high level of stability even under extreme conditions, making the 1210R-121H an essential component in many electronics applications.

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