SBSPP0500223MXR

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EMI/RFI filters are an important part of radio-frequency interference (RFI) common-mode suppression. They are commonly used in medical, industrial and consumer electronics applications to block and absorb unwanted radiated or conducted interference. One such filter is the SBSPP0500223MXR, which is used in industrial applications where high power EMI/RFI needs to be managed. This article will discuss the application field and working principle of this particular filter.

Application Field

The SBSPP0500223MXR filter is primarily used in industrial applications such as motor drives, inverters, appliances, power supplies, and lighting control systems. It is designed to reduce both conducted interference (induced currents caused by external sources) and radiated interference (noise from radio waves). The filter features two capacitors and two inductors in a single shielded common-mode choke configuration. It is ideal for power line noise suppression and conforms to various international standards such as EN 61800-3 for motor drives.

Working Principle

The SBSPP0500223MXR filter operates on the principle of common-mode suppression. It uses two individual capacitors and inductors to form a common-mode choke that attenuates common-mode noise. The two capacitors act as a filter, blocking out interference by creating a low-impedance path for unwanted currents in the power-supply lines. The two inductors act as a shield, absorbing and dissipating unwanted radio waves in their core.

The capacitors and inductors are arranged in such a way that the common-mode choke effectively attenuates both low- and high-frequency interference. The filter also has an isolation transformer, which provides an extra layer of suppression for conducted interferences along power lines. All these components work in tandem to ensure that the filter functions as intended.

The SBSPP0500223MXR filter is an effective solution for industrial EMI/RFI noise suppression applications. Its common-mode choke configuration effectively attenuates both conducted and radiated interference in way surpasses regular LC and RC networks. It is an ideal solution for motor drives, inverters, appliances, power supplies, and lighting control systems.

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