UU9LFBNP-B502

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Common Mode Chokes, also known as common mode inductors, are passive, two- or three-wire electrical components featured with high inductance value. They are utilized in order to limit the high frequency current over the power lines and reject the interference from external electromagnetic emissions.

UU9LFBNP-B502 is a three-wire, filtered power line filter that is specially designed to filter out common mode noise from electronic devices and reduce EMI between the devices like TV set, computer, printer and other peripheral products. It features high-frequency filtering performance, thus ensuring high-quality power supply for electric equipment and prolonging its service life.

The main application field of this filter is consumer electronics. It is an ideal filtering component for all kinds of digital and analog electronic products, which require steady power supply and compliant with the international EMC regulations. Besides, it can be widely used in industrial machines, medical equipments, electric control box, and instrumentation electrical supplies.

Working principle-wise, this power line filter allows current to pass through both directions without generating an appreciable back EMF. The energy generated by common mode current is dissipated mainly by the inductor, 50 ohm resistor, and 0.1uf capacitor. The resistor and the capacitor work together to absorb and control the low frequency harmonics in both directions passing through the filter, thus greatly reducing noise in the data line.

The main components of this kind of filter are the core and the coil winding. The core is a ferrite material that is highly permeable to common mode current, and the coil is usually made of high quality copper wire. The core and coil play an important role in the filtering efficiency of the filter. The overall size of this filter is compact and its installation is simple.

In conclusion, the UU9LFBNP-B502 filter is able to provide excellent protection against common mode EMI and RFI noise interference, thus improving the performance and working efficiency of electronic products. It is an efficient and economical way to reduce EMI from an electrical device without affecting its signal and power quality. As a result, it is widely used in various fields of the electronics industry.

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