UVZ2E3R3MPH

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Aluminum Electrolytic Capacitors

Aluminum electrolytic capacitors (AECs) are energy-storage components consisting of an anode made of aluminum foil (the positive electrode), a cathode made of an electrolyte (the negative electrode), and a separator made of glass-fiber cloth or film. The basic mechanism of an aluminum electrolytic capacitor is that when an electric potential, or voltage, is applied to it, ions are attracted to and deposited on the anode, creating a layer of "electrical double layer" which acts as a dielectric. This dielectric increases capacitance, or the ability to store energy, in the capacitor.

Ultraviolet (UV) coated capacitors, abbreviated as UVZ2E3R3MPH, are one type of aluminum electrolytic capacitor developed for use in high-frequency applications. These capacitors are specifically designed to provide improved performance and stability at high frequencies, boasting improved field strength, advanced performance, and increased lifetime. The use of UV coated capacitors also helps to reduce the electrical leakage current to close to zero when using high frequencies.

This type of capacitor is particularly well suited for power electronic design due to its excellent high frequency characteristics. For example, it can be used in the power train of electric vehicles, as the voltage and current can be regulated and draw up to 1000 amps. UVZ2E3R3MPH capacitors are also commonly used in frequency control and driver components of power supplies, voltage inverters, motor controllers, and more.

At the heart of a UVZ2E3R3MPH capacitor’s design is its construction. This type of capacitor is composed of an anode made of sputtered polycarbonate (PC) film and an anode made of overlapped aluminum foil with an electrolyte deposited in between. The UV coating on the PC film helps to significantly reduce the electrical leakage current of the capacitor, so that it can achieve a stable performance at high frequencies.

The working principle of a UVZ2E3R3MPH capacitor is similar to that of any other type of aluminum electrolytic capacitor. When an electric potential is applied to the capacitor, ions from the electrolyte are attracted to and deposited on the anode. This deposition creates an electrical double layer that increases capacitance, or the ability to store energy. With the UV coating on the PC film, the capacitance is further improved by reducing the electrical leakage current at high frequencies.

UVZ2E3R3MPH capacitors offer a number of advantages over other types of aluminum electrolytic capacitors; including increased capacitance, improved field strength, reduced electrical leakage current, increased lifetime, and improved performance at high frequencies. As such, they are an ideal choice for power electronic applications such as electric vehicles, frequency control and driver components of power supplies, voltage inverters, motor controllers, and more.

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