ECA-2DHG3R3B

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Aluminum electrolytic capacitors are a type of capacitor that uses an electrolytic solution together with an aluminum foil as opposed to a classic capacitor that uses two conductive plates, made from a material like plastic or paper, separated by a dielectric. THey are widely used in industrial, commercial, and consumer electronics applications. The ECA-2DHG3R3B series aluminum electrolytic capacitors, manufactured by Nichicon, are a range of miniature, high-performance capacitors, rated at 85°C.

Applications:
EC-A2DHG3R3B aluminum electrolytic capacitors are used in a wide range of applications, from graphic equalizers and speaker crossovers to motor controls in home appliances, these capacitors are known for their good performance at high temperatures. They are particularly suited for noise decoupling applications in portable and embedded devices. Their low ESR capabilities make them a good choice for power supply filtering and decoupling, and even high frequency applications when combined with SMT FETs.

Working principle:
The use of an electrolytic solution together with an aluminum foil gives these capacitors a high energy density, which lets them store an impressive amount of charge. This potential energy is held within the capacitor until a voltage reaches it, and current can then flow through the capacitor, charging and discharging it in a predictable and controllable manner. The charge is stored between the two parallel plates of foil, which are separated by the electrolytic solution serving as a dielectric.

Construction:
The ECA-2DHG3R3B series is manufactured in a cylindrical shape, with a diameter of 4 mm and a pitch of 5 mm, giving it a miniature profile. Internally, the design utilizes metallized foil on the cathode and an electrolytic solution contained within the cathode and anode. This design gives the capacitor excellent electrical performance, and allows for high energy storage and low ESR. The whole device is then potted in an epoxy resin that further improves its physical robustness and further reduces its ESR.

Conclusion:
The Nichicon Corporation’s ECA-2DHG3R3B series aluminum electrolytic capacitor is a miniature, high-performance capacitor designed for applications with high reliability at high temperatures. With its low ESR capabilities, it is well suited for noise decoupling and power supply filtering applications. Its design utilizing metallized foil on the cathode and an electrolytic solution, potted in epoxy resin, ensures excellent performance and robustness.

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