T491B335M035AT4380

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):	3.5 Ohm
Type:	Molded
Voltage - Rated:	35V
Tolerance:	±20%
Capacitance:	3.3µF
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Tantalum Capacitors

T491B335M035AT4380 is a type of tantalum capacitor. A tantalum capacitor is a type of electrolytic capacitor which uses a semi-conducting tantalum oxide (Ta₂O₅) as its anode. This type of capacitor has a number of advantages over the other types of capacitors like the standard aluminum electrolytic capacitors, including higher capacitance in a smaller volume, lower leakage current, better stability and a longer working life.

Application Field

T491B335M035AT4380 tantalum capacitors are mainly used in analog circuits like audio amplifiers, voltage references, off-line power supplies or other power electronics. These types of capacitors are also commonly used in digital circuits because of their low leakage current, which can cause noise or interference in digital circuit. Tantalum capacitors are well suited for high-intensity LED lights since they can store a large amount of energy.

Working Principle

The basic structure of the T491B335M035AT4380 capacitor consists of two electrically conducting foils, one of which is half-coated with tantalum oxide. An electrolyte, which can be a gel, a paste, or a solid state polymer, is applied to the tantalum oxide-coated foil in order to create the barrier between the foil and the electrolyte. In a standard application, the anode is connected to the positive terminal of the capacitor, and the cathode is connected to the negative terminal.When a potential is applied to the capacitor, the oxygen ions in the electrolyte will be attracted to the anode, causing it to become positively charged. At the same time, electrons from the cathode will be attracted to the anode and will be stored in the form of electrostatic energy. This process creates an electric field which helps to store the electrical energy for a certain period of time. In addition, the film of tantalum oxide provides an additional advantage: it works as an oxide barrier, preventing an electrical short circuit from occurring between the anode and the cathode. This is especially important in high voltage applications, because it reduces the risk of failure and shock hazard.

Conclusion

T491B335M035AT4380 capacitors offer several advantages over other types of capacitors, including high capacitance in a smaller volume, lower leakage current, better stability and a longer working life. These capacitors are commonly used in both analog and digital circuits, as they have low leakage and can store a large amount of energy. Moreover, their built-in oxide barrier provides extra protection against electrical shorts and other hazards.

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