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Tantalum Capacitors

Tantalum capacitors, or tantalum electrolytic capacitors, are a type of electrolytic capacitor, a polarized capacitor whose anode electrode is made of a sintered pellet of tantalum, while the cathode consists of an oxide layer that is formed on the surface of the pellet. This type of capacitor is widely used in automotive, medical, telecom, aerospace, and military applications due to its relatively high capacitance and low profile.

T491B475M020AT4818 Application Field

The T491B475M020AT4818 is a polarized, SMD (Surface Mount Device) type, tropically-stable tantalum capacitor with a temperature range from -55°C to +125°C. It’s a solid tantalum capacitor with a long profile and structured to provide extremely low ESR values over a wide temperature range.

The T491B475M020AT4818 is highly suited for high-reliability, high-temperature, and high-current applications. It is an ideal substitute for aluminum electrolytic capacitors in high-current pulse handling and ripple current applications. The T491B475M020AT4818 is generally used in digital circuits, acoustic devices, fire alarm systems, electronic toys, motor control, automotive ECUs, and other electronics.

T491B475M020AT4818 Working Principle

The T491B475M020AT4818’s principal property is its capacity for high-frequency charge and discharge cycles combined with low losses (ESR and ESRR) at high current drain. This makes the T491B475M020AT4818 especially suitable for use in high-efficiency applications!

Once the capacitor is charged, the voltage across its terminals remains constant until the capacitance is exceeded. A small amount of current continues to flow, at a reduced level, until it eventually stabilizes at a fixed level. The capacitor is now said to be in a “steady state.” This is the basic function of the T491B475M020AT4818.

In addition to its regular function, the T491B475M020AT4818 also provides ESR protection for many devices. It does this by controlling current flow, preventing dramatic voltage fluctuations and excessive heat generation. This is why the T491B475M020AT4818 is often used in applications that need consistent power delivery.

Conclusion

The T491B475M020AT4818 is an ideal choice for any application that needs long term reliability and a steady voltage supply, with consistent, low ESR values. Its low profile and SMD construct also make it suitable for all sorts of modern, high-tech applications. The T491B475M020AT4818 is fast becoming the standard of choice for sensitive, high-end electronics.

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