FN405-0.5-02

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FN405-0.5-02 Application Field and Working Principle

Power Line Filter Modules are used to protect sensitive electronic equipment from power line electromagnetic interference, providing EMI/RFI filtering capability for main line power, control power, data/signal lines, or electronic instrumentation. FN405-0.5-02 is a widely used power line filter module by XCLASS Enterprise.

Application Field

FN405-0.5-02 is designed as a general-purpose power line filter module, to provide EMI/RFI filtering capability from a wide range of sources. It is suitable for applications from AC-DC or DC-DC power supply, and electronic/industrial equipment which are connected to power line. In particular, it can be used for power line filtering on products such as personal computers, audio-video devices, industrial control, measuring instruments, medical, and broadcast equipment. Its maximum voltage capacity of 250V AC/DC and an operating temperature of -40℃ to 125℃ make it suitable for a wide variety of applications, including high temperature and high wattage systems.

Working Principle

Audible buzz and power line transients can cause EMI and RFI noise to electronics products. To suppress these noises, FN405-0.5-02 is equipped with three-stage filters including differential and common mode, using an impedance-balanced series-form filter network. It works together with a multi-layer ceramic capacitor as a synthesized filter. It provides a very low of insertion loss (−1.5 dB max from 10 MHz to 1GHz) and guarantees of 81dB of EMI/RFI rejection, ESD protection, and surge protection up to 8KV. In order to achieve maximum performance, both ends of the filter shall be terminated with an appropriate ground.

In order to achieve effective EMI/RFI filtering, the FN405-0.5-02 module is designed with a three-stage filter network. The first stage is a differential mode, which is used for suppressing common mode interference. The second stage is a common mode filter, used for suppressing differential mode noise. The third stage is a low pass filter, which is used for suppressing conductive noise. Together, these three-stage filters ensure that the signal is filtered from noise, while still providing a clean power signal with low insertion loss.

FN405-0.5-02 is designed to operate without external components. It features a power transformer core with multiple windings for maximum efficiency, allowing for maximum power efficiency and minimum insertion losses. With no need for external components, the filter can be installed quickly and easily into the system, while still providing effective EMI/RFI filtering performance.

Conclusion

FN405-0.5-02 is a simple, easy to install, and highly effective power line filter module from XCLASS Enterprise. It offers excellent EMI/RFI filtering performance, as well as surge and ESD protection up to 8KV. With its wide operating temperature and voltage range, as well as its high efficiency and low insertion losses, it is suitable for a variety of applications in AC-DC or DC-DC power supply, personal computers, audio-video devices, industrial control systems, measuring instruments, medical, and broadcast equipment.

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