IDCP1813ER470K

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Fixed inductors, also known as chokes and coils, are components designed to store electrical energy in the form of a magnetic field due to a passed electrical current. These inductors are commonly used in small portable electronic devices, as well as in power conversions, filters, and signal processing applications. One such inductor is the IDCP1813ER470K, a radial-leaded fixed inductor.

The IDCP1813ER470K, manufactured by Murata Electronics, is a radial-leaded fixed inductor with a maximum DC current of 1.18 A. It has a temperature coefficient of -30 ppm/°C and a tolerable ripple current of 1.5 A. The IDCP1813ER470K operates over a secure temperature range of -40 to +105 °C, and is designed to be used in switching regulator designs. The inductor is protected from short-circuits and provides excellent thermal characteristics due to its molded bundle construction.

The inductor features good DC bias characteristics, low noise, high efficiency, and small size; it is available in a miniature 0805 foot print with 8 mm height. It is also compliant to RoHS requirements, allowing it to be used in consumer and automotive applications. In addition, the product is highly reliable, with a rated lifetime of 2,500 hours.

The working principle of a fixed inductor is based on the property of inductance. Inductance is expressed as the ratio between the magnetic flux linkage and the current. An inductor is composed of a coil of insulated wire, around which a magnetic field is produced when a current is passed through it. The magnetic field will induce an electromotive force (EMF) in a conductor placed in the field, increasing the current and inducing a counter-EMF. This counter-EMF is proportional to the rate of change of current through the conductor, and is referred to as a back emf.

The back-emf induced in the coil of an inductor acts against the current flowing through the circuit, creating an opposition to current flow called inductive reactance. This inductive reactance opposes changes in current by dissipating the energy in the form of heat and magnetic field. This opposition of an inductor to changes in current limits the current to a certain level, allowing for power control.

By combining the back emf developed across the inductor with a resistor, inductors can be used as filters. The resistor acts as a dissipative element and allows the current to flow through the inductor, while the back-emf opposes the current, causing the filter to remove any unwanted frequency components. This is an effective method of signal cleaning that is commonly used in power supply designs.

The IDCP1813ER470K fixed inductor is designed for the demanding requirements of modern electronics. It is highly reliable, has a high efficiency, noise reduction, and thermal charateristics. It also features good DC bias characteristics and a small size, making it an ideal choice for applications such as power supplies, filters, signal processing, and portable electronic devices.

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