Tantalum Capacitors

109D455X9050C2 is a type of tantalum capacitor. It is composed of a tantalum metal powder anode, an anode oxide layer, a tantalum nitride based cathode, and a conductive polymer electrolyte. These components are encased in a ceramic can and sealed hermetically with a metal case, making it a high-value capacitor.

Application Field

Tantalum capacitors have applications in the consumer electronics industry, automotive electronics, power supplies, motor control, and switching power supply circuits. These capacitors are suitable for use in various applications such as filtering, bypassing, smoothing, or coupling. They are also commonly used in distributed power systems, audio amplifiers, power amplifiers, converters, power factor correctors, induction heaters, induction motors, and variable frequency drives. They are also used in LED lighting, digital computer memory, and medical systems.

Working Principle

A tantalum capacitor works in a similar way to other electrochemical capacitors. When a voltage is applied to it, the inner oxide layer of the anode will be polarized, creating a semi-permeable barrier. This separation of charge allows electrons to flow from the anode to the cathode, thereby creating a charge separation and a capacitance. The amount of capacitance depends on the distance between the two electrodes, as well as the size of the electrodes.

Tantalum capacitors also have a much lower equivalent series resistance (ESR) compared to other capacitors. This low resistance results in better electrical characteristics, such as a higher ripple current rating and a better frequency response. Additionally, because they are constructed using solid components, they are highly resilient to mechanical shock and vibration, as well as temperature extremes.

Tantalum capacitors are becoming increasingly popular as they offer many advantages over other types of capacitors. These advantages include their small size, high capacitance, low ESR, high reliability, and cost. Because of this, they are now widely used in a variety of applications.