UPA1A471MPD1TD Capacitors

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Aluminum electrolytic capacitors are widely used as a type of electrical component for power electronics and electric power. The UPA1A471MPD1TD features a compact, surface mount design and offers high ripple current, low ESR, and high temperature operation—all of which make it an ideal selection for a wide range of applications. In this article, we discuss the application field and working principle of the UPA1A471MPD1TD aluminum electrolytic capacitor.

Application Field

The UPA1A471MPD1TD aluminum electrolytic capacitor is suitable for various types of electric and electronic systems, such as switch power supplies, AC/DC adapters and power converters. It is also used in car audio amplifiers, electric appliances, and driver boards for electric vehicles. Additionally, it is used for stabilizing high frequency devices, such as radios and other high speed electric instruments.

Working Principle

Aluminum electrolytic capacitors use the “double layer” theory. The capacitor has two electrodes: the anode, which is made of aluminum foil, and the cathode, which is usually composed of a highly porous grounding foil material. The distance between the two electrodes is filled with a dielectric, usually petrochemical-based colloidal electrolyte. When a voltage is applied between the anode and the cathode, a double electric layer forms. The positive ions (cations) move to the negative electrode while the negative ions (anions) move to the positive electrode. The amount of electrical energy stored is proportional to the amount of the electrolyte liquid used.

Aluminum electrolytic capacitors vary to some extent in their design and construction, but in general they are composed of three layers. The anode is made of aluminum foil that is etched and formed into a pattern. The second layer is the cathode roller, which is an organic electrolyte material. The third layer is the dielectric layer, which is impregnated with a petroleum-based electrolyte.

When a voltage is applied to the capacitor, electrons are attracted to the anode and current passes through the electrolyte layer. In the electrolyte, cations move to the anode and anions move to the cathode. This creates an electric field between the anode and the cathode and produces a charge that can store energy.

The advantages of aluminum electrolytic capacitors include their low cost, small size, and long life. They also have high ripple current, low ESR (equivalent series resistance), and electrostatic capacitance. Moreover, they are extremely temperature-resistant and are ideal for use in high frequency applications.

In conclusion, the UPA1A471MPD1TD aluminum electrolytic capacitor is an ideal choice for a variety of electric and electronic systems such as power supplies, converters, audio amplifiers, electric appliances, driver boards for electric vehicles, etc. It has many advantages, such as low cost, small size, high ripple current, and low ESR. Additionally, it has a compact, surface mount design and offers high temperature operation, making it an ideal selection for a wide range of applications.

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