420MXG270MEFCSN35X25

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Aluminum Electrolytic Capacitors are passive components used for storing electrical energy. As one of the most commonly used types of capacitors, they are a significant component in electronic circuits and devices such as TVs, speakers, computers, and cell phones. This article will discuss the application field and working principle of the specific aluminum electrolytic capacitor, model 420MXG270MEFCSN35X25.

Aluminum electrolytic capacitors are widely used in commercial and industrial electronic equipment, such as power supplies, amplifiers, and signal transmission circuits. This specific model, 420MXG270MEFCSN35X25, is an intracapacitor with a radial lead and top insulation. It is especially suitable for circuits with high frequency and low impedance, and can also be used in circuits operating under high pulsating currents.

The capacitance of model 420MXG270MEFCSN35X25 is 270µF, the rated voltage is 400V, and the rated temperature is +105 degrees Celsius. Its construction uses an anode formed by a sheet of aluminum oxide and a thin electrolyte layer. The oxide layer acts as the dielectric, and the electrolyte provides the ions for the electric field. A conductive layer of binder is applied between the oxide and electrolyte to ensure good electrical contact.

The working principle of aluminum electrolytic capacitors is similar to that of other capacitors, in which two conducting plates are separated by a dielectric material. In this model, a voltage applied to the anode (positive plate) causes electrons to be attracted to it, creating a negative charge. At the same time, an equal amount of positive charges are attracted to the cathode (negative plate) due to the low resistance between the two. This creates an electric field, which stores energy.

Unlike other types of capacitors, aluminum electrolytic capacitors use an electrolyte instead of a solid dielectric material. This electrolyte acts as a medium which facilitates the flow of ions from the anode to the cathode, which in turn increases the efficiency of the electric field. The electrolyte also acts as a filter, absorbing any impurities in the circuit and preventing them from affecting the capacitance.

When operating at high temperatures, the electrolyte absorbs moisture and expands, increasing the capacitance. At low temperatures, the electrolyte contracts, which decreases the capacitance. The electrolyte’s response to temperature is one of the reasons why aluminum electrolytic capacitors are not suitable for temperature-sensitive applications or extremely low temperatures.

The420MXG270MEFCSN35X25 aluminum electrolytic capacitor is a versatile component that can be used for a wide variety of applications. Its low size, high capacitance, and high rated voltage makes it suitable for circuits with different power requirements. Its temperature and humidity resistance also makes it ideal for applications that require long-term reliability.

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