Aluminum Electrolytic Capacitors

EEE-HA1V4R7R is one of the most popular types of aluminum electrolytic capacitors. An aluminum electrolytic capacitor is a type of electrical component which stores electrical energy within a capacitor structure consisting of two electrodes separated by an electrolyte.

Application Field

EEE-HA1V4R7R capacitors are used for dc blocking, high frequency bypass, and audio crossover networks, along with power supply filtering and timing circuits. In addition, EEE-HA1V4R7R capacitors are used as decoupling devices to reduce or limit voltage transients and as snubbers to reduce or limit current transients.

EEE-HA1V4R7R capacitors are widely used in consumer, industrial, automotive and military applications, including the manufacture of personal computers and cell phones. Other applications of EEE-HA1V4R7R capacitors include motor drives, communications equipment, instrumentation, medical equipment and energy storage systems.

Working Principle

The working principle of an aluminum electrolytic capacitor is based on the Faraday law of electrostatics. In an aluminum electrolytic capacitor, an oxide film is formed in the air gap between two aluminum plates. Due to the oxide film, the capacitor can hold a charge. This oxide film acts as an insulation against leakage current and forms a barrier for the capacitor, preventing any charge from passing through it.

Capacitance is the ability of a capacitor to store electrical energy from applied voltages. Capacitance is calculated using the formula C = Q/V, where Q is charge stored and V is applied voltage. The capacitance of an aluminum electrolytic capacitor is determined by the area of its plates, thickness of the oxide film and permittivity of the electrolyte. The dielectric strength of an aluminum electrolytic capacitor is determined by its applied voltage and leakage current.

EEE-HA1V4R7R capacitors are characterized by their high capacitance, low equivalent series resistance (ESR) and excellent ripple current handling capability. They are made with a wide range of capacitance values and voltage ratings and have a relatively high self-discharge rate compared to other types of capacitors.