EEA-FC0J121H

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Aluminum Electrolytic Capacitors are widely used and versatile components for many applications due to their various features; one such component is the EEA-FC0J121H. This article will provide an overview of its application field and working principle.

The EEA-FC0J121H is a long life, very low impedance aluminum electrolytic capacitor which is most suitable for use in communication equipment and server applications. It features a long shelf-life and excellent surge current capability, meaning it is able to handle pulse currents up to 120A. The difference between the EEA-FC0J121H and other electrolytic capacitors is its Lower Equivalent Series Resistance (ESR). ESR is the internal resistance of the capacitor that can limit the effectiveness of the capacitor and reduce performance. The EEA-FC0J121H has an ESR of 1-3mΩ, compared to other capacitors which have significantly higher ESR values.

The EEA-FC0J121H also features a high volumetric efficiency and corrosion resistance, both of which are incredibly important when considering the safety and long-term durability of the capacitor. This capacitor is also RoHS compliant and EIA-486 compliant, meaning it satisfies all international standards for product safety and environmental protection. Additionally, this capacitor is able to operate between -40 to 105°C making it ideal for a wide range of industrial applications.

But what is the working principle behind this capacitor? An aluminum electrolytic capacitor uses two electrodes (an anode and a cathode), in combination with an electrolyte. An electric charge is created when the electric voltage is applied to the two electrodes, a positive charge to the anode and a negative charge to the cathode. The electrolyte, which is typically made of ethylene glycol, is then drawn into the dielectric layer surrounding the two electrodes causing a polarization effect along the electrode surface.

This polarization effect increases the voltage capacity of the capacitor and increases the amount of energy it can store. As electrons pass the anode/cathode boundary they enter the capacitor’s dielectric layer. The build-up of electrons and ions inside the dielectric layer causes an internal electric field that causes charge to accumulate on the capacitor plates. This accumulation of charge creates the capacitance of the EEA-FC0J121H.

In summary, the EEA-FC0J121H is an aluminum electrolytic capacitor that features a lower ESR than other capacitors allowing it to handle large pulse currents. It does this by utilizing the polarization effect caused by the electrolyte and the electric field created by the accumulation of charge on the capacitor plates. This makes it perfect for use in communication equipment, server applications and a variety of industrial applications.

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