T520V476M016AHE070

Tantalum - Polymer Capacitors

T520V476M016AHE07, commonly referred to as a "Tantalum - Polymer Capacitor" or "Tantalum Capacitor" is a passive component composed of a tantalum anode and a polymer film as the dielectric. The capacitor is wound and then encapsulated in a case.

Tantalum-Polymer Capacitors are very popular components and have been widely used in many applications due to their excellent characteristics. They are mainly used to store energy or filter the high frequency and transient signals.

Application Field

Tantalum-Polymer Capacitors offer high volumetric efficiency, very good temperature performance, and excellent long-term stability, which makes them suitable for use in high-frequency and high-temperature applications. Because of their high stability and reliability and relatively low losses, T520V476M016AHE07 capacitors are widely used in high-temperature, miniaturized and surface mount electronic equipment, such as cellular phones, cameras, camcorders, laptops, and other consumer electronic equipment.

Tantalum-Polymer Capacitors are also commonly used in military, automotive and aerospace applications. Because of their superior stability and reliability, they are used in applications that require military standards, like satellite systems, radar systems, and communications equipment.

Tantalum-Polymer Capacitors are also used as power-line filtering capacitors in switch-mode power supplies, as they have a low ESR and high ripple current capability over a wide temperature range. They are also used in data converters and other analog circuits, as they have superior temperature characteristics and fast response time.

Working Principle

The working principle of T520V476M016AHE07 capacitors is based on the principle of capacitance. Two metallic plates separated by an air gap form a capacitor. The capacitance of the capacitor is a function of the gap between the two plates and the surface area of the two plates. The larger the gap and surface area are, the greater the capacitance.

Tantalum-Polymer Capacitors are formed by replacing the air gap with a polymer dielectric material. The dielectric material allows for a larger capacitance to be achieved for a given size of the capacitor. The polymer dielectric also generally has superior electrical characteristics compared to air. Thus, the capacitor can achieve a higher voltage rating, smaller size and higher capacitance.

The tantalum anode is formed by pressing finely ground tantalum powder into pellets, which are then sintered to form a porous mass of tantalum granules. The polymer dielectric material is then sprayed onto the anode, and the anode and dielectric are then rolled into a cylindrical shape. The capacitor is then encapsulated in a case, and the leads are connected to the anode and cathode, completing the capacitor.

The capacitor can then be charged and discharged, depending on the application, by passing electrical current through the capacitor. When a stepped waveform is applied to the capacitor, a steady voltage level is determined, as the capacitor charges and discharges as needed to hold a steady voltage level.