RN122-1-02

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Common Mode Chokes are electrical components specifically designed to reduce common mode current flowing on transmission lines. The RN122-1-02 is one of many products in this family and it is used in a variety of applications due to its unique characteristics. In this article, the application field and working principle of the RN122-1-02 will be discussed in detail.

Application Field

The RN122-1-02 common mode choke is designed to be used in a wide variety of applications. Its primary function is to reduce common mode current on transmission lines, but it also offers strong noise immunity and excellent differential-mode stability. These features make it an ideal electrical component for various digital communication systems, such as Ethernet, USB, and other types of networks. It can also be used for motor control or noise filtering in industrial power supplies. It features ferrite core construction, and is offered in two core versions: open-loop (non-shielded) and shielded.

The RN122-1-02 common mode choke is designed to be highly efficient, with minimal power requirements. It has a wide temperature range from -25°C to +85°C, and is available in various size and packaging options. This makes it suitable for applications in highly compact devices or areas with limited space. It also offers a high dV/dt and consumer-friendly operation, making it very cost effective.

Working Principle

The working principle of the RN122-1-02 common mode choke is quite simple. It reduces common mode current on transmission lines by acting as an impedance device, creating a magnetic field to absorb the current. The device works by presenting a large impedance to the common mode current, but a much lower impedance to the differential mode current. This means that the transmission line will be able to transmit the differential mode current with minimal losses, while the common mode current is effectively blocked.

The common mode choke can be further divided into two categories: self-shielding and shielded. The self-shielding type features an internal shield, and can be used for both common mode and differential mode noise reduction. The shielded type features an external shield and is mainly used for common mode noise reduction. It is important to note that shielded type common mode chokes offer higher performance than self-shielding types at higher frequencies. It is also important to consider the size and packaging of the common mode choke before selecting it for an application.

The RN122-1-02 common mode choke is a versatile device with many advantages. Its wide temperature range and various size and packaging options make it suitable for a wide variety of applications. It offers high efficiency, excellent common mode current reduction, and low power requirements. It is highly cost effective, and can be used for motor control, noise filtering or digital communication.

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