CMR07F822FPDR

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Mica and PTFE capacitors are widely used in a variety of electrical and electronic equipment, providing both an economical and reliable solution to a variety of industrial and consumer applications. CMR07F822FPDR is a type of mica-PTFE capacitor, which is used most commonly as a DC-Link or ‘Y’ capacitor in the power stage of ECU and SMPS applications. It is also used as a bypass capacitor in a variety of power supplies.

CMR07F822FPDR capacitors are designed to reduce RFI / EMI interference caused by switching power regulators in ECUs, SMPS, and other related circuits - typically in automotive, industrial or telecom applications. The capacitor comprises two plates insulated using mica (a highly-stable natural mineral), coated with a dielectric of liquid polytetrafluoroethylene (PTFE) for high temperature performance and exceptional low level capacitance values. CMR07F822FPDR capacitors use a patented process involving the PTFE being completely encapsulated between two layers of mica, eliminating internal shorting and resulting in a stable, reliable product.

CMR07F822FPDR capacitors are particularly suitable for use in automotive ECUs (Engine Control Units), SMPS (Switch Mode Power Supplies) and other DC-Link applications. The main characteristics of the CMR07F822FPDR capacitors are low ESR (<3mΩ), low DF (<3%) and low ESL (<0.01nH), which results in improved electrical efficiency and performance. The capacitors also offer good environmental protection from moisture, humidity and temperatures up to 125°C.

The working principle of CMR07F822FPDR capacitors is based on electrostatic charging of the capacitor plates. The charging is achieved when current flows through it, creating a potential difference across the plates. This potential difference causes electric charges to collect on the plates, resulting in the capacitor storing energy. As long as current flows through the capacitor, a potential difference is maintained, enabling the capacitor to act as an energy reservoir and provide excellent filtering and stability in the power stage of the ECU and SMPS.

In conclusion, CMR07F822FPDR capacitors are a reliable and cost-effective solution for reducing EMI and RFI interference caused by switching power regulators in ECUs and SMPS. With low ESR, DF and ESL, the capacitors offer excellent performance, enhanced electrical efficiency and also provide good environmental protection. The working principle of these capacitors is based on electrostatic charging of the capacitor plates to provide exceptional filtering and stability in the power stage of an ECU or SMPS.

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