T491D686M006AT Capacitors

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 @ 85°C
Series:	T491
ESR (Equivalent Series Resistance):	800 mOhm
Type:	Molded
Voltage - Rated:	6.3V
Tolerance:	±20%
Capacitance:	68µF
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 a type of capacitor that are used in a variety of electronic applications. They are valued highly for their reliability, low leakage, and low impedance. The T491D686M006AT capacitor is one of the most popular and widely used types of tantalum capacitors. This article explores the application fields and working principles of the T491D686M006AT capacitor. The T491D686M006AT is a type of solid-tantalum (SMT) capacitor with a 6.3V rating, an ESR of less than 1 ohm, and a capacitance of 680µF. It features a surface mountable case and an extended temperature range from -55 to 85°C. It is an ideal choice for applications where board space is limited and which require high ripple current capability.The T491D686M006AT is commonly used in applications such as automotive, industrial, and medical. In automotive applications, they are used in the powertrain and in engine management systems. In the powertrain, the capacitors are used in applications such as the alternator, starter motor, airbag system, and airbag control modules. In engine management systems, they are used in applications such as engine control unit (ECU) and transmission control unit (TCU) modules, as well as in pulse width modulation (PWM) controllers.In industrial applications, they are used in controllers, programmable logic circuits, distributed control systems, and other 110/220V systems. The capacitors are also used in many medical devices such as patient monitors, anesthesia machines, respiratory devices, and other medical equipment.The working principle of the T491D686M006AT capacitor is that it is used to provide a stable voltage source and energy storage. The capacitor acts as a reservoir for electrical charge, storing energy in two conductive plates. When the capacitor is connected to a voltage source, the plates are charged with an equal and opposite amount of charge. The plates will then stay charged until the connection is broken.The components of the capacitor are typically three in number. The anode and cathode, or positive and negative terminals, are the two conductive plates, typically made of aluminum, which derive their charge from an external power source. The dielectric between the plates is typically a tantalum film and acts as an insulator. When current passes between the two plates, a voltage is created across the plates, storing energy in the capacitor as static electricity.The T491D686M006AT capacitor is an excellent choice for a variety of different applications, thanks to its reliability, low leakage, and low impedance. It is a versatile component that can be used in automotive, industrial, and medical applications, and its working principle is easy to understand. With its wide range of features and applications, the capacitor is an invaluable component for electronics engineers.

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