MHQ0402PSA2N1ST000

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Fixed inductors are components used in a variety of electronic circuit applications. They are widely used in circuits to regulate electric current flow, to store energy in a magnetic field, and to create electromagnetic fields. In this article, we discuss the MHQ0402PSA2N1ST000 application field and working principle.

The MHQ0402PSA2N1ST000 inductor is an SMD inductor, or surface-mount device inductor, featuring an inductance of 4 nH (nanohms) and operated at 200mA in a frequency range of 0 to 4GHz (4,000MHz). The MHQ0402PSA2N1ST000 measures just 0.040 by 0.020 inches (1.02 by 0.51 mm). It is designed for and suitable for use in both surface mount and through-hole applications. It is RoHS compliant and strongly recommended for use in professional electronics assemblies.

The MHQ0402PSA2N1ST000 is designed to provide high resistance to current, choking the flow of electric current which leads to the accumulation of energy in its magnetic field. This feature makes it a great choice for power supply filtering, RF isolation, and signal conditioning. It is also extremely useful for providing DC isolation, decoupling applications, and signal isolation between current-carrying components. It is suitable for use in frequency-dependent circuits, analog audio signal filtering, and AC line noise and RFI filtering.

The MHQ0402PSA2N1ST000 is constructed with a ferrite core, which consists of a mix of iron, cobalt, and other metal oxides. Ferrite cores are used in inductors because they provide superior magnetic properties and allow the component to have a high inductance. The metal has the ability to store an electromagnetic field and unwilling to change its shape. This allows a much higher impedance and much lower Q, or frequency response factor, than a comparable inductor with an air core.

The MHQ0402PSA2N1ST000 also features Low Loss (LL) construction which ensures a low temperature coefficient so the inductor does not experience strong changes in its inductance when current passes through it. LL construction also provides a low DC resistance, allowing for efficient energy transfer throughout. Its high quality, long-lasting construction also ensures a stability in the parts performance over its operating life, an essential factor for reliable high frequency applications.

The working principle of the MHQ0402PSA2N1ST000 is based on Faraday’s Law of Induction. This states that when a conductor is placed within a changing magnetic field an electric current is induced within the conductor. In an inductor, electric current passing through the core induces a magnetic field which creates a magnetic field within the conductor as well. The magnetic field created by this electric current exerts a force on the current, creating a self-sustaining field that opposes a change in current flow and constrains it in a downward loop. This is why the component presents higher resistance to current than an open circuit.

In summary, the MHQ0402PSA2N1ST000 is a small yet versatile and reliable SMD inductor. Its 4nH inductance and especially its Low Loss construction makes it an ideal solution for a variety of circuit applications, especially those involving power filtering, DC isolation, signal conditioning, and signal isolation between current-carrying components. The component operates on the principles of Faraday\'s law of induction, with the magnetic field generated by an electric current inducing a self-sustaining current loop and forming an opposition to any change in the current flow. This makes it an excellent choice for a variety of high-frequency electronic circuit applications.

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