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Aluminum Electrolytic Capacitors

The ERHB5H1LGC102MD70U is an aluminum electrolytic capacitor. An aluminum electrolytic capacitor is an active component that utilizes electrical energy and performs electric energy conversion in various electronic equipment circuit designs, including radio communications, consumer electronics, computers, power supplies, automotive electronics, etc.

An aluminum electrolytic capacitors consists of two primary components: an anode and a dielectric layer. The anode, is typically aluminum foil and the dielectric layer is an oxide that is formed when the anode is oxidized. The anode is then enclosed in a metal sleeve with a layer of liquid electrolyte. This liquid electrolyte acts as an ion bridge between the positive and negative terminal of the capacitor. This is known as wet electrolytic capacitors and it provides stability and minimizes internal leakage.

Application Field

The ERHB5H1LGC102MD70U aluminum electrolytic capacitor finds application in power electronics, filters, enerson management, communications, electric vehicles, radio-frequency, and automotive electronics. It can also be used in a variety of consumer electronic devices. Due to its high capacity, low cost and low impedance, it is ideally suited for applications that require filtering, transient protection, and energy management.

Working Principle

The ERHB5H1LGC102MD70U aluminum electrolytic capacitor has high energy storage capacity and is an efficient tool for eliminating noise in electronic circuits. When voltage is applied, the fleece-like foil -anode is the positive electrode and becomes polarized due to the electric field, while the oxide layer - dielectric remains unbounded. Thus the aluminum foil charges and the space between the aluminum foil and the oxide layer is a dielectric medium. The polarization stores energy, which is discharged when the voltage across the capacitor is removed.

At the same time, the liquid electrolyte and dielectric medium also controls the leakage of current and provides stability to the electric field. The electrolyte is in constant motion due to the electric field and constantly reacts with the anode and cathode forming new bonds. This further reduces the leakage current and overall improves the capacitor’s performance.

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