T491C475M020AT

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Tantalum capacitors are an important component in many electronic circuits due to their small size, high capacitance and excellent stability. The T491C475M020AT is a tantalum capacitor specifically designed to handle large amounts of current and to provide a high degree of noise immunity. In this article, we shall look at the application field and working principle of the T491C475M020AT tantalum capacitor.

Applications of the T491C475M020AT Capacitors

The T491C475M020AT is a high performance, low-ESR tantalum capacitor. It is ideal for use in power applications where high voltage and large current are involved. These capacitors are commonly used in DC-DC converters, which are used to step down high voltages to lower voltage levels. They can also be used in clock-buffers, power supply filters, and multiplexers. The capacitor can also be used in high power RF applications where high frequency signals need to be smoothed for an increased signal-to-noise ratio.

The T491C475M020AT tantalum capacitors are commonly used in military, aerospace and automotive electronics. Their high current and high voltage ratings make them invaluable for applications such as engine controls and on-board diagnostics. The T491C475M020AT is also used extensively in medical equipment due to its low leakage, and in home appliances where their low ESR and high stability are beneficial.

Working Principle of the T491C475M020AT

The T491C475M020AT is a tantalum capacitor, which is a type of electrolytic capacitor. Electrolytic capacitors are composed of two electrodes, an anode and a cathode, surrounded by a non-conductive electrolyte. The anode of a tantalum capacitor is made of tantalum, which is a chemical element. The electrolyte is a mixture of a positive charged ion and a negative charged ion. When charge is applied to the capacitor, the positive ions are attracted to the anode, resulting in a negative charged layer forming at the cathode.

Tantalum capacitors have a high volumetric efficiency, meaning they can store large amounts of energy in a small volume. This is due to the fact that the surface area available within the capacitor is much larger than that available in other types of capacitors. The T491C475M020AT capacitor is designed to operate with a temperature range of -55°C to 125°C, and has an extended low-temperature storage life of up to 500 hours.

The T491C475M020AT is a ‘through-hole’ capacitor, meaning it is fitted to a printed circuit board (PCB) using two holes drilled through the PCB. This allows for robust connections, making it suitable for use in harsh and vibration-prone environments. The capacitor is also resistant to water and vapour, making it ideal for use in highly humid environments.

Conclusion

The T491C475M020AT is a versatile and reliable tantalum capacitor designed to handle large amounts of current and to provide a high degree of noise immunity. Its wide range of applications make it ideal for use in power, military, aerospace and automotive electronics, as well as medical and domestic equipment. Its operating features and small size make it a perfect choice for high power RF applications. The capacitor is a through-hole type, with extended temperature and storage life ratings, making it an optimal choice for many applications.

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