MEXY2A473K

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Film capacitors are passive components which are capable of storing energy in the form of electrostatic field. These capacitors provide galvanic insulation between two conductive elements connected in parallel. In every single type of capacitor, even film capacitors, there are two essential components for the charge and discharge process: a dielectric, and two electrodes. The most common use for film capacitors is as filters, DC blocking, AC coupling, and energy storage. Examples of specific applications where film capacitors are used include medical instruments, audio equipment, test and measurement, power supplies, and electric vehicles.

The MEXY2A473K is a long life, self-healing polypropylene film capacitor, designed for AC/DC applications over a wide temperature range (–30°C – +105°C). It features an non-polar capacitance range of 47nF, with ESR of >5% and a voltage rating of 330VAC. Film capacitors in general are favored in most applications due to their low losses at higher frequencies and very good noise suppression. The MEXY2A473K , in particular has excellent self-healing properties and high temperature stability compared to other film capacitors in the industry, making it ideal for the toughest environments.

The MEXY2A473K works on the same principle as any other capacitor, using the dielectric as an insulator between two conductors. When the capacitor is connected across an AC voltage source, voltage is applied to the capacitor, and a charge is built up between the plates. The total stored energy depends on the value of the capacitor as well as the voltage applied to its plates. The greater the voltage, the greater the energy stored, and the greater the losses incurred due to the capacitor’s ESR. The MEXY2A473K, due to its high voltage rating, is able to store large amounts of energy while still maintaining low ESR values.

The MEXY2A473K is an ideal choice for applications such as power supplies, medical instruments, audio equipment, electric vehicles and general power conditioning, where larger capacitance values, high temperature stability, and low ESR are essential. As a result of its self-healing properties, the MEXY2A473K can also be used to filter out high frequency noise, making it a great choice for noise suppression in power supplies.

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