CDRH4D18CLDNP-4R7PC

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Fixed inductors (also known as inductors) are electronic components that are designed to store energy in an electric field in the form of a magnetic field. They are typically composed of two coils of wire wound around a ferromagnetic core made of ferrite or iron. They act as transients in electric circuits, storing and releasing energy to create and maintain signal levels.

CDRH4D18CLDNP-4R7PC is a fixed inductor from Summit Interconnects. This inductor is encased in a 4.3mm x 3mm x 2.2mm, 0.155oz package. It is made of 10mil layers of 170µm laminate material containing windings of 68µm copper wire. The CDRH4D18CLDNP-4R7PC has a high-Q (>900KHz at 1.6V with 1mA), high self-resonant frequency (>500MHz at 1V with 1mA) and low heat dissipation characteristic. It is designed for use in DC/DC converters, buck converters, boost converters, power over ethernet, point-of-load (POL), and other telecommunications, networking, and power applications.

The working principle of fixed inductors is based on Faraday\'s law of induction, which states that the voltage or current in a circuit is proportional to the rate of change of the magnetic flux linking with the circuit. A changing magnetic field in the inductor induces a voltage in the coils of the inductor. When the magnetic field is constant, no voltage will be induced in the coils. The magnitude of the voltage induced in the coils is directly proportional to the rate of change of the magnetic field.

A fixed inductor operates by storing energy in a magnetic field that forms around the core of the inductor. When a voltage is applied across the two coils of the inductor, a current is induced which causes magnetic flux to be generated around the core. This field increases with current, storing energy in the form of magnetic field. When the current is terminated, the magnetic flux produced by the inductor will begin to collapse, releasing the stored energy through the coils and creating an opposing back EMF.

CDRH4D18CLDNP-4R7PC is a fixed inductor constructed to perform even in the harshest environmental conditions. Its low profile package and high Q-values make it perfect for power over ethernet, DC/DC converters, and other telecommunications and power applications. Its high self-resonant frequency and low thermal resistance characteristics enable the inductor to maintain stable signal levels over a wide range of frequencies, thus ensuring superior signal quality and efficiency.

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