ER1025-89JP

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Fixed Inductors

Inductors, also known as coils, chokes, or reactors, are passive electronic components that can store energy in the form of a magnetic field when energized. Fixed inductors, as their name suggests, have fixed inductance. These components are placed in a variety of electrical applications and are usually used in the form of a discrete component, component of a circuit card, or integrated into a larger circuit.

ER1025-89JP Application Field

The ER1025-89JP is a fixed-inductance, non-reactive power inductor produced by Panasonic. The component is designed to be extremely small with a diameter of 2.5 mm and a height of 1.2 mm, making it ideal for applications where size and weight are important, such as RF, mobile, and the automotive industries. It is also RoHS compliant, making it safe for use in industrial settings.

The ER1025-89JP features a low DC resistance which allows it to provide high current capacity. This is an ideal component for applications that require low power loss, such as boost and buck converters, current sensing, and more. It also has a wide inductance range, from 0.001 to 1.5 mH which allows it to be used in a variety of applications.

ER1025-89JP Working Principle

Understanding the working principle of a fixed-inductance non-reactive power inductor is essential for designers to understand the component’s functions and limitations. The ER1025-89JP consists of an inductor windings, which is made of copper and filled with an insulating material. The inductor is also housed in a ferrite core, which is composed of iron ore and other materials. The windings form a coil; when energized, a magnetic field is created within the ferrite core, which in turn produces an inductance value.

When a direct current flows through the power inductor, the magnetic field created by the current creates a flux in the core. This flux generates an opposing force known as back-emf, which opposes the current and reduces the current flow. The back-emf is proportional to the frequency and rate of the change of current – the higher the frequency and rate of change of the current, the higher the opposing force. This is known as inductive reactance, which is measured in ohms.

The amount of back-emf produced is determined by the inductance and the current flow. The ER1025-89JP fixed-inductance non-reactive power inductor is designed to provide a consistent and reliable inductance value across a wide frequency and current range.

Conclusion

The ER1025-89JP is a fixed-inductance, non-reactive power inductor from Panasonic. It is extremely small with a diameter of 2.5 mm and a height of 1.2 mm, making it ideal for applications where size and weight are important, such as RF, mobile, and automotive industries. It also features a low DC resistance and a wide inductance range, from 0.001 to 1.5 mH, which allows it to be used in a variety of applications. The working principle of the ER1025-89JP is based on its ability to produce a magnetic field when energized, which in turn produces an inductance value. By using this component, designers can expect a consistent and reliable inductance value across a wide frequency and current range.

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