PLA10AS3521R2R2B

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Common Mode Chokes (CMCs) are passive electrical components with robust designs made up of coils and capacitors. They are used to provide electromagnetic interference (EMI) shielding and RF shielding, along with additional applications like data line filters, current balancing, and signal isolation. This article will discuss the PLA10AS3521R2R2B’s application field and working principle as a common mode choke.

The PLA10AS3521R2R2B is a common mode choke from TDK Lemo, specifically designed for interference suppression in differential and USB data lines. It is composed of three windings, a double-sided ferrite core, and an unshielded case. The device is rated for an inductance of 10-30µH and a rated DCR of 400mΩ. It also has a rated current of 700mA, making it suitable for applications such as USB 2.0 and USB 3.0 data transmission lines.

The working principle of the PLA10AS3521R2R2B is based on the concept of “common mode” noise. This type of noise is generated when two cables with the same transmitting signal but different levels of electric fields overlap. To prevent these fields from overlapping, the PLA10AS3521R2R2B creates a circuit with two windings that are equipped with two different magnetic cores. A magnetic flux is then generated when the device is powered, which creates a weak repulsive force that blocks the two electric fields at overlapping points.

The PLA10AS3521R2R2B can be used in various applications, including MIL-STD-461 and EN 61000-3-2 compliance. It is suitable for use in applications such as AC/DC switching, power transformer, solar, and automotive power systems. It can also be used for signal line filters and data line filters in various communication systems.

In summary, the PLA10AS3521R2R2B is a common mode choke with a broad application scope. It is designed to filter out EMI and provide protection against a variety of power systems and signals. Its robust design, composed of three windings and a double-sided ferrite core, provides an excellent level of performance. It is also equipped with an unshielded case, making it suitable for applications like USB 2.0 and USB 3.0 data transmission lines.

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