ECA-1HHGR47

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Aluminum Electrolytic Capacitors are the most commonplace type of capacitors used for storing electrical energy. They are made up of two sheets of aluminum foil that sandwich a thin sheet of insulator material. Each side of the sandwich is externally connected to a lead and then placed into an aluminum can. The lead and the can enable the capacitor to be connected to a circuit. The basic structure of an Aluminum Electrolytic Capacitor is depicted below.

An Aluminum Electrolytic Capacitor, such as the ECA-1HHGR47, is used for various capacitance and voltage applications. It is specifically used for low-leakage capacitors, meaning that it is suitable for applications where a low amount of electric current can travel through it. The capacitance ranges from 0.1-220 µF and the voltage range for this capacitor is between 10-50 volts.

The construction of ECA-1HHGR47, designed with close-tolerance capacitors and other components, provides for enhanced stability even at temperatures up to 125°C. It features an exceptionally low electrical leakage due to the use of high-density double-anode aluminum foils with incorporated oxidation inhibitors. Additionally, this capacitor is also available with polyester-film dielectric and a non-solid electrolyte with a special polyester-film capacitor topology that allows for an extended temperature range between -40°C and 125°C.

The working principle of the ECA-1HHGR47 capacitor is based on the electrochemically formed layer of aluminum oxide on the aluminum electrolytic plate. When a voltage is applied to the cathode and anode terminals of the capacitor, electrons are collected at the cathode. This causes an electric field to form in the dielectric layer and thus forms a surface charge. This buildup of electric charge increases the dielectric strength, which in turns increases the capacitance of the capacitor. Furthermore, the aluminum oxide layer also acts as an insulating barrier that keeps the charge stored in the capacitor for a long time, thus providing long-term stability.

ECA-1HHGR47 capacitors are mostly used for audio equipment, power supplies, and switching circuits. They are also extensively applied in various types of motor drive and lighting applications, thanks to their low levels of leakage current and their excellent temperature resistance. Moreover, they are also utilized in various medical and scientific instruments because of their stable capacitance values over a wide operating temperature range and their long-term stability.

In conclusion, the ECA-1HHGR47 Aluminum Electrolytic Capacitor is a low-leakage device that is designed for applications with voltage ratings between 10 and 50 volts, and capacitance values from 0.1-220 µF. It features a double anode aluminum foil with oxidation inhibitor for improved stability, as well as a non-solid electrolyte and polyester-film dielectric for an extended temperature range. The working principle involves the buildup of electric charge in the dielectric layer that increases the capacitance of the device. Its main applications include audio equipment, power supplies, motor drive, lighting systems, medical, and scientific instruments.

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