PEMI2QFN/CG,115 Filters

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EMI/RFI filters are essential components for most electronic systems, blocking undesired output from power supplies and preventing electromagnetic interference (EMI) or radiofrequency interference (RFI) from affecting other devices. PEMI2QFN/CG,115 is a type of EMI/RFI filter which is widely used in many different applications.This type of filter is a low-pass filter, which passes low-frequency signals and blocks high-frequency signals. It works as an impedance barrier between an electrical power source and the device, prohibiting any EMI or RFI from the power source entering the device. The filter includes two varistors, two capacitors and two inductors, which have a working frequency range of 100 kHz to 30 MHz and a cutoff frequency of approximately 100 MHz.The filters have a wide range of applications. Most commonly, they are used in medical equipment, communication systems, power tools, electrical appliances and any device which is susceptible to EMI and RFI. In addition, they can be used to protect power supplies from high voltage as well as protect delicate devices from strong electrical fluctuations.The working principle of the PEMI2QFN/CG,115 is fairly simple. When an electrical signal is sent from the power source, it passes through the capacitor and the inductor. The capacitor acts as a "short circuit" to low-frequency signals while the inductor acts as a "high-impedance" to high-frequency signals. Thus, the low-frequency signal passes through the filter and is sent to the device, while the high-frequency signal is blocked.The two varistors, which are connected to the filter, act as a surge protection to divert potential surges or spikes in voltage. When these surges occur, the varistors react quickly and prevent the high-frequency EMI or RFI from entering the device.The PEMI2QFN/CG,115 is a reliable and efficient type of EMI/RFI filter. It helps to protect electronic devices from potentially damaging EMI and RFI, ensuring the proper and safe operation of the device. As it is relatively inexpensive and can be easily installed, the PEMI2QFN/CG,115 filter is a great option for many applications.

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