T491A225M010ZT7280

Series:	T491
Packaging:	Tape & Reel (TR)
Part Status:	Active
Capacitance:	2.2µF
Tolerance:	±20%
Voltage - Rated:	10V
Type:	Molded
ESR (Equivalent Series Resistance):	7 Ohm
Operating Temperature:	-55°C ~ 125°C
Lifetime @ Temp.:	2000 Hrs @ 125°C
Mounting Type:	Surface Mount
Package / Case:	1206 (3216 Metric)
Size / Dimension:	0.126" L x 0.063" W (3.20mm x 1.60mm)
Height - Seated (Max):	0.071" (1.80mm)
Lead Spacing:	--
Manufacturer Size Code:	A
Ratings:	--
Features:	General Purpose
Failure Rate:	--

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Introduction

T491A225M010ZT7280 is a tantalum capacitor, a type of capacitor with a capacitance range from 1 F to 450 F, made from one of the chemical elements, tantalum. It provides an extremely high level of capacitance in a small package. Tantalum capacitors are known for their small physical size, high reliability, and high power density. In addition to these capabilities, tantalum capacitors offer other advantages, such as their high temperature performance, low profile package, and their chemical compatibility with many different materials.

Applications

Given its ultra-small size, high capacitance, reliable operation, and power density, tantalum capacitors can be used in a variety of applications. One of the most common uses of tantalum capacitors is in computer and server motherboards, where they serve as power stabilizers, protecting the components of the motherboard against power surges. They are also commonly used in military electronics, power supply filters, musical instruments, and sound systems. Tantalum capacitors are also vital components of medical equipment, communication devices, and industrial control systems. They are invaluable for their ability to provide reliable voltage for vital micro circuit components. Their ultra-small size makes them highly desirable in mobile phones, laptops, and digital cameras. The ability to withstand extremes of temperature, from -55C to 85C, makes them highly suitable for aerospace and missile guidance systems.

Advantages

The advantages of using a tantalum capacitor in an electrical circuit are numerous. One of the most common rationale for using tantalum capacitors is the fact that they are able to provide a large amount of capacitance in such a small package. A tantalum capacitor is much more compact than the usual ceramic or film capacitor. This makes them especially valuable in space-constrained applications, such as laptops or PDAs. Tantalum capacitors are also extremely temperature resistant. As mentioned earlier, they can operate at temperatures of up to 85C with minimal loss of efficiency. This makes them ideal for use in high temperature applications, such as with aircraft and missiles. They are also extremely reliable, thanks to the tantalum pentoxide dielectric that they are made with. This dielectric provides superior breakdown voltage characteristics and dynamic resistance compared to other capacitor types, making it able to withstand the harshest environmental conditions.

Working principle

The working principle of a tantalum capacitor is basically the same as for any other capacitor. When an electrical current passes through the capacitor, it will store the electricity and then discharge the electricity when the circuit is opened or to the areas that need current. The structure and construction of a tantalum capacitor is significantly different from a standard capacitor. In a standard capacitor, two conductive plates are separated by an insulating material, usually a ceramic compound. In a tantalum capacitor, a solid manganese dioxide layer is used as the dielectric and the surface area of the interior of the capacitor is coated with a layer of tantalum pentoxide. This layer creates a barrier, preventing current from flowing between the two electrodes. When a point charge is placed at one end of the capacitor, it creates an electric field, which will cause the two electrodes to become charged. As the electric charge is attracted to the opposite charged electrode, the elements of the capacitor become polarized and a potential difference is created between them. This potential difference causes a current through the capacitor, which is used to power components within the capacitor.

Conclusion

The T491A225M010ZT7280 tantalum capacitor is an ideal choice for power stabilization, high temperature performance, and reliability. Its small size and high capacitance density are advantageous in many applications, including computer motherboards, military electronics, and medical equipment. In addition, its construction with a tantalum pentoxide dielectric ensures a high breakdown voltage and dynamic resistance. A full understanding of the working principle of the tantalum capacitor ensures that the most suitable device can be chosen for the required application.

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