CC2824E474R-10 Filters

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Common mode chokes are frequently used in the field of electronics to attenuate undesirable signals in powerlines, audio applications, and radiated fields. The CC2824E474R-10 is a common mode choke by Vishay Intertechnology, Inc. Based on its specifications, this is a component created with high frequency applications in mind.

Overview and Construction

The CC2824E474R-10 is a 4mm x 4mm mini-chip inductor, or common mode choke, produced by Vishay. This component is designed to have an inductance value of 4.7uH at 100MHz and a high current rating of 1.4A. It also has a current carrying capacity of 1mA to 1.4A and an electrostatic discharge rating of 6kV. This common mode choke is made with a high-saturation ferrite core and features a pair of windings that have an isolation rating of 1000Vrms.

The windings of the CC2824E474R-10 feature a copperclad foil construction, having a low resistance of 0.06mΩ and a high current carrying capacity. In addition, this inductor has a self-shielding construction that prevents the cross-talk between the windings and thus eliminates the need for radiated-emissions-compliant designs.

Application Fields

The CC2824E474R-10 is primarily used in power-line applications such as motor control and switch-mode power supplies. These applications require high power switching, and the high frequency performance of this component helps to attenuate undesirable signals coming from the switching. The high isolating capability of this common mode choke also helps protect surrounding components from excessive EMI.

This component is ideal for audio applications such as signal processing and audio playback as well. Its low resistance and high current-handling ability make it suitable for transmitting audio signals without distortion or interference. Additionally, its high electrostatic discharge rating makes it suitable for automotive applications where it can help protect sensitive components from damage due to static buildup.

Working Principles

Common mode chokes are basically inductors with multiple windings that are arranged so as to allow current to flow in one direction but not in the other. As the applied voltage increases, the current also increases, and since the windings are arranged in opposite directions, the fields created by the current in the windings oppose each other and thus reduce the overall voltage across the chokes. This process is known as inductive voltage division, and it is one of the main principles behind the functioning of common mode chokes.

In case of the CC2824E474R-10, when an AC voltage is applied across the windings, it will induce a current flow in both directions. This current flow creates two magnetic fields – one with a clockwise direction and the other with an anti-clockwise direction. The two fields oppose each other and thus reduce the total voltage across the component. This is how the CC2824E474R-10, and other common mode chokes, work to attenuate undesirable signals.

Conclusion

The CC2824E474R-10 is a 4mm x 4mm mini-chip inductor by Vishay Intertechnology, Inc. that is primarily used in power-line and audio applications. It is designed with a high saturation ferrite core and has a pair of windings that allow current to flow in one direction only at high frequency, which helps reduce EMI. This common mode choke works on the principle of inductive voltage division and is capable of attenuating undesirable signals in order to protect surrounding components from damage.

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