ELJ-PF4N7DF Inductors, Coils, Chokes

Fixed inductors are components of an electrical circuit that stores energy in the form of a magnetic field, with its main purpose being to provide inductive reactance to circuits. One of the most common fixed inductors is the ELJ-PF4N7DF.

The ELJ-PF4N7DF is a four-layer, low-profile inductor with a max current rating of 4A. It has an inductance range of 0.69-6.9uH with a DC resistance of 0-0.38mΩ. This inductor is ideal for high efficiency power supplies such as AC/DC converters and DC/DC converters. It is also useful in RF applications, including in antenna applications.

The working principle of the ELJ-PF4N7DF is based on Faraday\'s law of induction. This law states that when a current-carrying wire passes through an inductor, a voltage is induced in the inductor, creating a magnetic field. When the current passes through the inductor, the magnetic field will grow and collapse, creating an electromagnetic wave. This wave is reflected back into the inductor, creating a voltage in opposite polarity to the initial voltage. This voltage, as well as the voltage induced by the magnetic field, is stored and re-used by the inductor for different purposes.

The ELJ-PF4N7DF is a great choice for high efficiency power supplies, RF applications, and antenna applications. Its four-layer structure and low profile make it an ideal solution for low profile installations. Additionally, its low DC resistance makes it an excellent choice for low voltage applications. Finally, its wide inductance range makes it a great fit for a variety of applications.