T494D156K035AT

Operating Temperature:	-55°C ~ 125°C
Failure Rate:	--
Features:	General Purpose
Manufacturer Size Code:	D
Lead Spacing:	--
Height - Seated (Max):	0.122" (3.10mm)
Size / Dimension:	0.287" L x 0.169" W (7.30mm x 4.30mm)
Package / Case:	2917 (7343 Metric)
Mounting Type:	Surface Mount
Lifetime @ Temp.:	2000 Hrs @ 125°C
Series:	T494
ESR (Equivalent Series Resistance):	350 mOhm
Type:	Molded
Voltage - Rated:	35V
Tolerance:	±10%
Capacitance:	15µF
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Reel (TR)

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Tantalum Capacitors

Tantalum capacitors are electrical components used to store and regulate electric current. They are also sometimes called tantalum electrolytic capacitors, as they utilize an electrolyte solution to store electric charge. Tantalum capacitors are available in a wide range of sizes and shapes, with various types of terminations and packages. T494D156K035AT is one type of tantalum capacitor that is used in different applications and has a certain working principle.

Application Field 

T494D156K035AT tantalum capacitors are widely used in many different applications. They are most commonly used in digital and analog circuit applications, such as in digital signal processing, radio communications, sound systems, computers, and telecommunications equipment. In addition, they are also used in power systems, medical devices, instrumentation and measurement equipment, led lighting, automotive systems and aerospace systems.

Working Principle

T494D156K035AT tantalum capacitors use a tantalum anode, which is a metal alloy. The metal alloy is then electroplated with a thin layer of conductive oxide, which acts as the dielectric material. The capacitance of the device depends on the surface area of the oxide layer and its thickness. The oxide layer acts as an insulator and can store charge. The current rating of the capacitor depends on the amount of current passing through it and the oxide layer thickness. The structure of the T494D156K035AT capacitor consists of a tantalum anode and a cathode, which are separated by an electrolyte solution. The electrolyte is an ionized solution that can conduct current. The two metal electrodes, anode and cathode, are connected through a porcelain-like outer case. This outer case acts as a shield that contains the electrolyte and the two metal electrodes. During operation, electric current passes through the electrodes and electrolyte solution, which creates an electrochemical reaction. This reaction creates ions that move freely through the electrolyte solution to the other side of the device. As current continues to pass through the electrons, the voltage across the device increases. When the voltage reaches a certain level, the ions move back to the other side, causing a charge to be stored in the oxide layer. This stored charge can then be discharged as needed, allowing the device to regulate current and voltage. This discharge is known as the “discharge curve”, which is usually plotted on a graph.

Conclusion

T494D156K035AT tantalum capacitors are used in a wide range of applications, from digital and analog circuits to medical equipment, instrumentation and measurement equipment, aerospace systems and more. They use a tantalum anode, which is electroplated with a thin layer of conductive oxide as the dielectric material. An electrolyte solution is then used to store electric charge, allowing the device to regulate current and voltage. The metal electrodes, anode and cathode, are encased in an outer case to ensure that the electrolyte and charge are contained properly.

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