UVR1H101MPA

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Aluminum electrolytic capacitors are capacitor components commonly used in electronic equipment. UVR1H101MPA is one of the models of aluminum electrolytic capacitors. It uses aluminum anode and oxide film as the diaphragm, and the electrolyte is used as the dielectric medium. The purpose is to charge and discharge, store energy, and play a role in filtering or waveform shaping, and is often used in power supply circuits and frequency signal circuits of electronic equipment. Below, we will discuss the application field and the working principle of UVR1H101MPA.

Application Field

UVR1H101MPA aluminum electrolytic capacitors are widely used in the smoothing of switching power supplies, filters, prevent transients and rectify DC circuits. It can also be used in the crossover of UPS, plasma televisions, LED lighting, medical equipment, communications, monitoring and other frequency signal circuits.

UVR1H101MPA can also be used as output filtering in linear regulators, switching regulators, as well as in battery-powered equipment, digital cameras and other electronics. According to the specific use situation, UVR1H101MPA can form several parallel combinations to improve the overall capacity. In addition, the product has a long service life, good self-healing performance, strong ripple absorption capacity and high reliability.

Working Principle

The operating principle of UVR1H101MPA aluminum electrolytic capacitor is that repulsive force causes the anode and the cathode to attract each other. When the anode and the electrolyte form an oxide film, a capacitor is formed. When a voltage is applied between the two poles of the aluminum electrolytic capacitor, the anode and the cathode form a short distance, and a surface layer of the anode is passivated through a chemical reaction to form an oxide film. This film is very thin and can only pass a small electric current. Therefore, it acts as a dielectric, thus forming a capacitor.

The higher the capacitance value of an aluminum electrolytic capacitor, the larger the area of the oxide film, and the larger the distance between the two electrodes. In order to ensure adequate capacitance, an additional insulated layer must be formed. In general, a thicker anode foil and a thicker insulating medium are used to increase the distance between the anode and the cathode. On the other hand, a thicker insulating medium needs to be combined with a thinner anode foil to reduce its equivalent series inductance, because thin anode foils have less inductance.

In operation, the testing anode must be charged higher than the rated voltage. Because the dielectric properties of the oxide film are very sensitive to temperature and voltage, the capacitance decreases at high voltages and temperatures. Overvoltage may cause the oxide film to rupture and the insulating medium to spark. In order to ensure the reliability of UVR1H101MPA aluminum electrolytic capacitors even under higher voltage and temperature, they are designed and manufactured according to the requirements of the specific application environment.

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