MAL210226332E3

Aluminum Electrolytic Capacitors

Aluminum electrolytic capacitors, also known simply as electrolytic capacitors, are capacitors with an electrolyte that functions as the capacitor\'s dielectric. They are the most widely used type of capacitors in an electronic circuit. Usually, they are used as a power supply filter, frequency control unit or in the coupling of signal circuit. The design of aluminum electrolytic capacitors allows for a very high capacitance value for a given volume, typically several thousand times greater than that of other types of capacitors.

MAL210226332E3 Application Field

MAL210226332E3 aluminum electrolytic capacitors have a robust design, making them extremely versatile and suitable for a wide range of applications. In general, they are used for AC and DC coupling, smoothing, time lag, signal loss prevention, frequency range, overvoltage protection and noise reduction. Common uses for this type of capacitor include power supply filters, audio amplifiers, circuit damping, passive filters and output waveform shaping.

MAL210226332E3 Working Principle

Aluminum electrolytic capacitors can be seen as the combination of two aluminum foils, separated by an electrolyte and insulation film. When voltage is applied between the two foils, the positive charges on the aluminum foils attract the negative charges in the electrolyte, forming an electric field between the two foils. This is something like a large bed of attracted oppositely charged ions.

The electric field serves to increase the capacitance of the capacitor. The size of the electric field is determined by the voltage applied, hence, increasing the voltage, will increase the electric field thus increasing the capacitance of the capacitor.

In addition, it is important to note that higher capacitance value will result from greater separation of the foils, meaning that thinner insulation material between the two foils will provide higher capacitance values. This is the reason why aluminum electrolytic capacitors come in various forms, with different insulation thicknesses, which affect the capacitance values.

MAL210226332E3 Features

MAL210226332E3 aluminum electrolytic capacitors are designed to meet the highest standards of quality and reliability. They offer features such as a low ESR (equivalent series resistance) to ensure high efficiency, long life and robust design with a maximum temperature range of -55°C to 85°C, temperature correction factors up to ±50%, and a high ripple current capability.

Depending on the size, they are rated from 100V to 400V. The capacitance range is from 0.1µF to 4700µF with standard tolerance of -20%. MAL210226332E3 capacitors are typically made of aluminum and come in an encapsulated, Cylindrical, axial, radial-type package with axial leaded connecting pins made of tinned copper to ensure a strong connection with the circuit. In addition, they feature a tolerance range from -20%, to +20%, ensuring a stable performance for the most demanding applications.