50NSEV3.3M5X5.5

Aluminum Electrolytic Capacitors

50NSEV3.3M5X5.5 belongs to aluminum electrolytic capacitors. An aluminum electrolytic capacitor (also sometimes called an al-elec capacitor) is a capacitor consisting of a pellet of pure aluminum foil with an oxide (anodic) layer acting as the dielectric, and some other material (ECTFE) as a solvent. The capacitor\'s ratings are determined by the aluminum surface area and its particular value is often in the range of 10μF - 2,000μF. It is the most common type of capacitor and widely used in power supplies, electric motors, and in other applications where high accuracy and reliable operation is required.

Application Field

The application field of aluminum electrolytic capacitors is broad and it can broadly be categorized into two sections:power electronics applications and machine control applications. In power electronics applications, they are used in power supplies such as regulated power supplies,Uninterrupted Power Supply (UPS), switched mode power supplies (SMPS), and in electric motors. They are also used in audio equipment and sound systems, inverters, and various other electronic equipment to reduce noise and maintain the electrical performance.

In the machine control section, aluminum electrolytic capacitors are used in relays, pumps, jumpers, motors, and stepper motors. They are also used in process automation like switches, sensors, andprogramable logic controllers. Moreover, aluminum electrolytic capacitors offer good transient suppression for high power devices and offer wide range voltage tolerance.

Working Principle

The working principle of aluminum electrolytic capacitors is simple. When an external voltage is applied, the electric current is supplied through the oxide film to the electrode and the capacitance is formed. The oxide film has the property of dielectric constant, which produces an electric field when voltage applied to it. Thus, the current flow through the oxide film, causing charge accumulation on the capacitor\'s plates. The thickness of oxide film determines the capacitance of the capacitor.

Aluminum electrolytic capacitors are basically divided into two types: radial and axial capacitors. Radial capacitors are cylindrical and have two terminals on either side of the capacitor casing.Axial capacitors have two terminals at one end.In both types, the level of capacitance is largely dependent on the dielectric material and the thickness of the oxide film. Generally speaking, the thicker the oxide film, the larger the capacitance value of the capacitor.

In addition to the capacitance value, aluminum electrolytic capacitors come with several other parameters such as operating temperature range, working voltage, leakage current,ripple current, voltage coefficient, installation methods, and size. Some capacitors also come with surge current ratings that determine the maximum amount of current it can pass in a short period of time.

Aluminum electrolytic capacitors can be used in a variety of applications where it is important to maintain high accuracy and reliable operation. They are currently being used in power electronics applications, machine control applications, audio and sound systems, and process automation. They can also be used for transient suppression and noise reduction to ensure effective and reliable operations for electrical equipment. With proper application and maintenance, aluminum electrolytic capacitors can last for many years without any issues.