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Aluminum Electrolytic Capacitors

Introduction

An Aluminum Electrolytic Capacitor (AEC) is an electrolytic capacitor with an aluminum electrode which uses an electrolyte to achieve a larger capacitance than other capacitor types. The aluminum electrode acts as the anode, which is typically etched or formed to increase its surface area, while the cathode is usually a solid manganese dioxide layer. AECs are polarized capacitors and usually use the additional suffix “-R” in their part numbers to denote the required orientation of the positive terminal

Types and Construction

AECs can be seen in many different forms, from tiny radial-leaded models to large snap-in devices, with both aluminum and tantalum types available. The most common type of aluminum capacitor is the spherical ones, but some of the more popular types are the “snap-in” and screw terminal aluminum electrolytic capacitor. The snap-in type is a cylindrical device that can be mounted onto a circuit board, while the screw terminal type is a larger device that is mounted directly to an enclosure. Both types of capacitors can be rated up to tens of thousands of microfarads, with voltage ratings of up to 600 volts

Application Field and Working Principle of 678D107M050CG4D

The 678D107M050CG4D Aluminum Electrolytic Capacitor is a radial-leaded and surface mount device that offers a voltage rating of 50V and a capacitance of 12500μF. It is used in applications such as power supplies, filters, and coupling circuits, among others. The working principle behind this type of capacitor is that of electrolytic polarization. An electrolyte such as an electrolyzed solution of an acid, a liquid metal, or a slag (a metal oxide) is used to form a thin solid electrolytic film on each aluminum electrode of the capacitor. This electrolytic film can store electric charge. As a result of this polarization, the current flows through the electrolyte and the solid electrolyte film on the aluminum electrodes

Conclusion

The 678D107M050CG4D is a popular aluminum electrolytic capacitor that is used in many applications. Its working principle is based on electrolytic polarization, and it offers a voltage rating of 50V and a capacitance of 12500μF. The device is often used in power supplies, filters, and coupling circuits, among others. This type of capacitor is an ideal choice for applications where stability of performance is critical.

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