DLW21SN670HQ2L Filters

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Common Mode Chokes, or CMCs, provide a reliable and versatile solution for suppressing unwanted electrical signals in a wide variety of applications. The DLW21SN670HQ2L Common Mode Choke, manufactured by FDK Corporation, is a robust and affordable piece of equipment that can accommodate high current loadings while providing excellent filtering characteristics. The following article will provide an overview of the DLW21SN670HQ2L application field, as well as a discussion of its working principles.

Application Field

The DLW21SN670HQ2L is a flexible CMC that is suitable for numerous applications. It offers excellent filtering capabilities for suppressing unwanted noise and crosstalk. As a result, it can be used for general EMC (Electromagnetic Compatibility) purposes, or for specific applications such as automotive electronics, computers, consumer electronics, industrial control systems, and lighting. It is also highly appropriate for DC/DC converters, regenerative power supplies, and inverters.

In addition to its applications in different fields, the DLW21SN670HQ2L is also available in two package types: Module (M) and Resin Molded (RM). The Module type has a higher current capacity and boasts a larger operating temperature range, while the Resin Molded type offers a lower inductance range. Therefore, depending upon the application, customers can choose the appropriate package type.

Working Principle

At the heart of the DLW21SN670HQ2L CMC is its unique three terminal design. This design enables the choke to effectively filter out common mode interference. The choke works by transferring noise energy through its inductive reactance. In order to optimize the filtering efficiency, the core material of the choke is ferrite. Ferrite material exhibits different properties in terms of inductance and impedance as compared to other materials, enabling the choke to provide better noise suppression.

When provided with the correct operating voltage, the choke transmits common mode noise energy through its inductive reactance. This energy is ‘transformed’ by the core material of the choke and eventually dissipated, resulting in a reduced level of unwanted noise in the appropriate application. However, it is important to note that the operating voltage of the choke should be carefully selected in order to achieve optimal noise suppression.

Moreover, the DLW21SN670HQ2L is equipped with several components which play a critical role in the filtering process. These include the choke filament, the Nand F pins, and the casing. The choke filament helps to reduce the inductance, while the Nand F pins help to create the desired inductance value and further suppress the noise. The casing also helps to dissipate the generated heat evenly and safely.

Conclusion

The DLW21SN670HQ2L Common Mode Choke is a reliable and versatile device that offers excellent noise suppression for a wide range of applications. It is capable of handling high current loadings and offers two package types to cater to different requirements. It features a unique three terminal design, which is powered by a ferrite core that facilitates optimal noise suppression. Additionally, several other components, such as the casing and the pins, help to create the desired inductance value and properly disperse the generated heat.

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