T491B224M050ZT

Lifetime @ Temp.:	2000 Hrs @ 125°C
Failure Rate:	--
Features:	General Purpose
Ratings:	--
Manufacturer Size Code:	B
Lead Spacing:	--
Height - Seated (Max):	0.083" (2.10mm)
Size / Dimension:	0.138" L x 0.110" W (3.50mm x 2.80mm)
Package / Case:	1411 (3528 Metric)
Mounting Type:	Surface Mount
Series:	T491
Operating Temperature:	-55°C ~ 125°C
ESR (Equivalent Series Resistance):	14 Ohm
Type:	Molded
Voltage - Rated:	50V
Tolerance:	±20%
Capacitance:	0.22µF
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Tantalum Capacitors

Tantalum capacitors, also known as tantalum electrolytic capacitors, are capacitors that use tantalum metal as their anode. They are a type of electrolytic capacitor, a component of electronic circuits, and come in radial or axial leads. They are polarized and designed for use in specialty applications. The T491B224M050ZT is a well-known and widely used variant of the tantalum capacitor.

Application Field and Working Principle

Tantalum capacitors are most commonly used in high-density devices, such as digital cameras and mobile phones, which contain high-frequency circuits. They are used in applications that require a compact size and low profile. They are commonly used as decoupling, bypass and filtering capacitors in circuit boards due to their small size, low noise and high capacitance. Tantalum capacitors are also useful in circuits that require low leakage current, such as timing circuits and analog-to-digital converters. The T491B224M050ZT is a surface-mount style capacitor that uses tantalum as its anode and a manganese dioxide electrolyte as its cathode. It has an equivalent series resistance of only 1.2Ohms, making it one of the most popular choices for high-frequency applications. Its capacitance is rated for 2.2uF at 25V. The T491B224M050ZT is designed for use in surface mount applications and is one of the most reliable components available in the market today. Tantalum capacitors work using the same principle as regular electrolytic capacitors, in that the anode is made from an oxide film which is polarized. When a voltage is applied to the device, a small amount of electrons are attracted to the oxide film, creating a charge which is stored in the capacitor. The oxide film also acts as an insulator, preventing current from passing through the capacitor.

Advantages and Disadvantages

The main advantages of using tantalum capacitors are their ability to retain charge even when the power is removed, making them ideal for use in memory modules and power supplies. They also have a higher capacitance than other types of capacitors, meaning they can store more energy in less space. Lastly, they are extremely stable over a wide temperature range, which makes them suitable for use in consumer and military applications. There are also some drawbacks to using tantalum capacitors. For starters, they are more expensive than other types of capacitors. They are also quite fragile and if mishandled, can easily be damaged. The oxide film can also break down if exposed to high temperatures, resulting in an open circuit and disruption of the circuit. Lastly, they are highly capacitive and are prone to leakage and short-circuiting.

Conclusion

Tantalum capacitors are an important component of modern electronics and are used in a variety of applications. In particular, the T491B224M050ZT is a widely used variant of the tantalum capacitor, due to its small size, low noise and high capacitance. It is ideal for use in high-density devices such as digital cameras and mobile phones, due to its small size and low profile. However, tantalum capacitors come with some drawbacks such as their expense, fragility, and tendency towards leakage and short-circuiting. Nevertheless, they are a valuable component that has a wide range of applications.

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