CR32NP-7R4MC

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Fixed inductors, also known as chokes, are important components in many electrical circuits. The CR32NP-7R4MC is one such fixed inductor, used in many types of applications and with various working principles. This guide provides an overview of these applications and principles so you can better understand the purpose of this device.

Overview

The CR32NP-7R4MC is a surface mount fixed inductor, available in an 0603 size. It features a lead-free silver terminal finish, with a maximum rated temperature of 85°C. This device is especially popular in mobile device applications, as it provides a reliable source of filtered power. Other common applications include DC-DC converters, multi-phase buck converters, and Class-D audio amplifiers.

Working Principle

Fixed inductors work on the principle of inductance, which is the ability of a current path to resist changes in current. When an electrical current is passed through a coil or set of windings, it creates an electromagnet. This magnet induces a magnetic field around the coil, and this field resists changes in the current. This resistance is referred to as inductance, and is measured in units of henries.

When the current is stopped, the magnetic field collapses. This induces a voltage in the coil, with a magnitude that is dependent on the inductance. This voltage can be used to power other circuits, and is referred to as an “induced voltage” or “back voltage.” This is one of the primary ways in which a CR32NP-7R4MC can be used.

The CR32NP-7R4MC is also useful as a filter, in that it can remove noise from an AC signal. This works by taking the AC current, filtering it through the inductor, and allowing only the desired frequencies to pass through. This eliminates any higher or lower frequency signals that are not wanted.

Conclusion

The CR32NP-7R4MC is a versatile fixed inductor, suited to many applications. It is especially popular in mobile device applications, where it can both provide filtered power and remove noise from an AC signal. With its surface mount design, the CR32NP-7R4MC is an accessible and reliable device.

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