T491B475K025AT4380

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Tantalum Capacitors

Tantalum capacitors, also known as tantalum electrolytic capacitors, are electrochemical capacitors consisting of a tantalum anode, which is usually an oxide layer, and a liquid or solid electrolyte as the cathode. The T491B475K025AT4380 is a common type of tantalum capacitor used in a wide range of applications.

Application Field

T491B475K025AT4380 tantalum capacitors are often used in complex applications that require frequent changes in electrical parameters, including digital electronics, consumer devices, telecommunications, military electronics, and power supplies. In addition to the digital, consumer and telecommunications applications, they are also used in audio and radio equipment, bridges, and variable speed and frequency converters. The T491B475K025AT4380 is also suitable for working in high humidity environments as this type is isolated from the ambient air by a hermetically sealed epoxy resin case and also has a conformal coating for added protection.

Working Principle

T491B475K025AT4380 tantalum capacitors are manufactured using a chemical vapor deposition (CVD) process that deposits an oxide film of a few nanometers thickness onto the inside surface of a tantalum cathode. The oxide is then impregnated with an organic liquid electrolyte like MnO2 and finally sealed hermetically in a tantalum case with a lead out to the anode. During operation, when an electric potential difference is applied between the anode and cathode, electrons flow from the anode to the cathode. This causes an electrochemical reaction, leading to the formation of a thin and highly conductive layer of manganese dioxide on the anode. This film acts as an electrolyte, allowing electrons to pass through the device and giving it its capacitive properties.

The tantalum capacitor exhibits electrical properties because of its hysteresis nature. The hysteresis nature of the tantalum capacitor allows electrons to rest in unique energy states as the voltage around it change. This energy state of electrons help the capacitor to retain charge for a long period of time, even after the voltage around the capacitor has changed. Such capacitor is extremely useful in applications where energy conservation is necessary, such as automotive ignition systems and other military applications.

The T491B475K025AT4380 capacitor is highly stable and resistant to temperature and pressure variations. They also have a good shelf life, with some models capable of providing reliable performance for long periods even without using. This makes them an ideal choice for applications with changing electrical parameters, as they are able to remain within the specified electrical parameters, even if the environment changes.

In conclusion, the T491B475K025AT4380 is a highly reliable, long-lasting and stable type of tantalum capacitor, suitable for a wide range of applications. It has a great shelf life and is able to remain within specified electrical parameters even when the environment changes. Its hysteresis nature also allows it to store charge for a long period, making it an ideal choice for energy conservation applications.

The specific data is subject to PDF, and the above content is for reference