ALS71C133NW350

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Aluminum Electrolytic Capacitors are widely used in various applications due to their excellent attributes. The ALS71C133NW350, in particular, is a type of capacitor that comes in a molded case, with an anode-to-cathode structure for mounting. It has particular application fields and a distinct working principle.

Application Field

The ALS71C133NW350 aluminum electrolytic capacitor is used in multiple applications, the most common being switching power supplies, motor drive circuits, and inverters. It is suitable for any device that requires a large capacitance for a specified volume since it is a rugged electrolytic capacitor. Furthermore, it has been designed for better HF performance, making it an ideal choice for any high frequency circuits.

It is widely used in various industrial equipment such as frequency converters, programmable logic controllers, and high-power transistors. It is frequently found in start-up circuits for low power appliances. Additionally, its high capacitance values make it the perfect choice for applications such as resonant circuits and high current filters.

Working Principle

An aluminum electrolytic capacitor utilizes a solid thin aluminum oxide as the dielectric, which is formed by anodizing electrolysis. The anode layer is formed by coating aluminum particles with an insulating film, after which an electrolytic solution is filled with a special electrode material to create the cathode. This type of capacitor is referred to as a polarized capacitor due to the presence of a difference in applied voltage between the anode and cathode.

The aluminum oxide layer serves as an insulator and will break down if the voltage is high enough. The vast majority of Aluminum Electrolytic Capacitors utilize an oxide film, however, some extra stability can be achieved by adding a polymer dielectric layer that significantly increases the electric strength of the entire structure. Commonly, the ALS71C133NW350 will feature a polypropylene layer for protection.

Inside the capacitor, the electrodes are connected to aluminum strips by special tightening screws. An extra bonding layer is used to assure the maximum electric binding between the capacitor body and the internal parts. The whole structure is put in a heat-resisting casing, which provides safety and insulation for the device in harsh environments.

Conclusion

The ALS71C133NW350 aluminum electrolytic capacitor was designed for precise high frequency circuit applications due to its high capacitance values and robust characteristics. Its application field includes switching power supplies, motor drive circuits, and inverters, and the working principle involves the utilization of a solid thin aluminum oxide dielectric, which is formed by anodizing electrolysis. Proper insulation and protection is provided by a heat-resisting casing at an optimal voltage for maximum electric stability.

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