PM125SH-181M-RC

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Fixed Inductors

Inductors are an important building blocks within any electronic circuit. Fixed Inductors are electrical components used in a variety of circuits to generate and control magnetic fields. The purpose of a fixed inductor is to store energy in the form of a magnetic field. They are made up of an insulated wire wound in a circular or s shape.

The PM125SH-181M-RC is an example of a fixed inductor. It is generally sold in a flat, rectangular package and works as an inductor choke or common mode filter. It has a maximum working voltage of 50V, a saturation current of 20A (20%), and an inductance of 1.8mH at 100 kHz.

Application Fields

Fixed inductors are used in a wide range of applications. These include power supplies, dc-dc converters, inverters, amplifiers, antennas, servo motors, or any application where a steady level of current is needed.

The PM125SH-181M-RC is particularly well-suited for audio applications, as its high-frequency noise reduction capabilities make it ideal for interference suppression. It also features high inductance stability, even when subjected to rapid current changes. This makes it an excellent choice for motor control and servo applications.

Working Principle

An inductor works by creating a magnetic field around a coil of wire when a current is applied. This magnetic field stores energy, which is released back into the circuit in the form of current when the applied current changes. A fixed inductor is characterized by a fixed magnitude of inductance, meaning the amount of energy stored does not change. This allows for a much more consistent performance than variable inductors.

The PM125SH-181M-RC uses an air-core design to achieve its superior noise-reduction capabilities. In this type of design, the air acts as a dielectric material, allowing for the maximum flux density within the inductor without saturating. This reduces stray noise, improving the accuracy and consistency of inductor performance.

The PM125SH-181M-RC also utilizes three metal shields to reduce EMI and reduce the risk of short circuits. These shields also provide high-temperature protection and make the inductor suitable for high-powered applications.

In summary, the PM125SH-181M-RC is an excellent fixed inductor for audio applications and motor control. It has a high working voltage, low-frequency noise reduction, and metal shields for added protection. Its air-core design ensures maximum flux density to improve performance and consistency.

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