Aluminum Electrolytic Capacitors

Aluminum electrolytic capacitors are widely used in various electronic and electrical applications. The EEU-FC1E331L has many advantages in terms of its design and application, making it an attractive option in the aluminum electrolytic capacitor market. This article will outline the application field and working principle of the EEU-FC1E331L.

Application Field and Specifications

The EEU-FC1E331L is an electrolytic capacitor designed for use in switching power supply and DC/DC converter applications. It features a long lifetime, high ripple current and voltage capability, and low ESL. The capacitor also features good temperature characteristics and high capacitance values in a variety of sizes.

The EEU-FC1E331L is available in several sizes, ranging from 16V to 63V. The capacitance ranges from 290uF to 22000μF. The EEU-FC1E331L has a maximum ripple current of up to 6.8A and a maximum voltage of up to 100V. The capacitor has an operating temperature range of -40°C to +105°C and is rated for up to 10,000 hours of life.

Working Principle of Aluminum Electrolytic Capacitors

Aluminum electrolytic capacitors are composed of an electrolyte and two aluminum foil electrodes. The anode is made of highly pure aluminum foil; the electrolyte is a solution of organic electrolyte which dissolves a certain amount of aluminum ions; and the cathode is made of a highly porous material that has a large number of small holes for the organic electrolyte to penetrate. The combination of electrolyte and aluminum forms a layer called an aluminum oxide which is a semi-permeable membrane.

The working principle of the capacitor relies on the formation of an electric double layer. When a voltage is applied to the electrodes, a small amount of electric current passes through the electrolyte. This generates an electric field between the electrodes, creating an attraction that allows ions to pass through the aluminum oxide membrane.

The amount of electric charges passing through the electrolyte is determined by the capacitance. As the capacitance increases, the number of ions passing through the membrane also increases, increasing the capacitance of the capacitor. As the number of ions passing through the membrane decreases, the capacitance decreases.The capacitor is then charged or discharged depending on the applied voltage.

Conclusion

The EEU-FC1E331L is a long-life, high-performance electrolytic capacitor designed for use in switching power supply and DC/DC converter applications. Its features such as long lifetime, high ripple current and voltage capability, low ESL, and good temperature characteristics make it an attractive option in the aluminum electrolytic capacitor market. The working principle of the capacitor relies on the formation of an electric double layer which determines its capacitance and charge/discharge cycle.