ER1641-304JM

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Inductors are passive electronic components consisting of two terminals, at least one of which is usually an electrical conductor wrapped around a core that are used to introduce inductance into a circuit. Among these, Fixed Inductors are a type of inductor in which the inductance value is fixed.

ER1641-304JM is one example of a fixed inductor. It is a small, axially-leaded, low cost, 0402 surface mount chip inductor with a large inductance value of 4.7uH in a 0392LS size body. The ER1641-304JM utilizes a ferrite core material for the construction of its body and a metal plating for its lead contacts, providing excellent electrical characteristics along with its low-profile construction. While it is designed especially to meet the needs of low power, low voltage applications, its larger size and greater inductance value than typical 0402 inductors make it highly suitable for more demanding circuits.

Application Field

The ER1641-304JM is used in a wide variety of applications, including high frequency power supply circuits, voltage stabilization circuits, oscillation circuits, damping circuits for AC and DC signals, curren detection circuits, and circuits for protecting electronic equipment. Its design and construction make it particularly suitable for various electronic applications involving power supplies, audio, and video circuits.

In addition, due to the high inductance values and compact size of the ER1641-304JM, it is also used in various automotive applications, including fuel injector control circuits, starter solenoids, and emission control systems. The better heat dissipation offered by its metallized lead contacts also makes it suitable for DC-DC converters in automotive applications.

Working Principle

An inductor works on the principle of Faraday’s Law, which states that changing magnetic flux through a loop of wire induces an electromotive force in said loop. It is this electromotive force, or voltage, that is responsible for the inductors ability to store and release energy. The ER1641-304JM utilizes this effect by creating an oscillation of electrical current through its two terminals, with the magnetic flux generated through the core inducing a voltage between the terminals.

The inductance value of the ER1641-304JM is determined by the size of the core, the number of coils on the core, the number of turns on each coil, and the type of material used for its core. The combination of high inductance and low profile allows the ER1641-304JM to be an ideal choice where a large inductance is required in a space constrained circuit. Additionally, its high inductance value makes it especially suitable for filters and wideband impedance matching.

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