T491X337M004ZT

Series:	T491
Packaging:	Tape & Reel (TR)
Lead Free Status / RoHS Status:	--
Part Status:	Obsolete
Moisture Sensitivity Level (MSL):	--
Capacitance:	330µF
Tolerance:	±20%
Voltage - Rated:	4V
Type:	Molded
ESR (Equivalent Series Resistance):	800 mOhm @ 100kHz
Operating Temperature:	-55°C ~ 125°C
Lifetime @ Temp.:	2000 Hrs @ 125°C
Mounting Type:	Surface Mount
Package / Case:	2917 (7343 Metric)
Size / Dimension:	0.287" L x 0.169" W (7.30mm x 4.30mm)
Height - Seated (Max):	0.173" (4.40mm)
Lead Spacing:	--
Manufacturer Size Code:	X
Ratings:	--
Features:	General Purpose
Failure Rate:	--

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T491X337M004ZT tantalum capacitor is a type of capacitors which can store electrical energy in an electrical field. It is mainly used in applications such as military, aerospace, telecom, audio, video, and medical. This type of capacitor is typically used to decouple, filter, and bypass signals, and stable power supplies.Construction of Tantalum CapacitorsThe T491X337M004ZT tantalum capacitor is composed of an anode, a layer of an electrolyte, and a cathode. The anode is typically made of a sintered tantalum powder. This powder is molded, configured, and then sintered in a furnace. This process gives the anode a porous structure similar to a honeycomb. The porous structure in turn creates a large electrode surface area. The electrolyte is then applied on the tantalum anode. The electrolyte’s function is to both keep the anode stable and to fill the pores of the anode. The cathode usually consists of a conductive polymer, oxide, or a manganese dioxide material.T491X337M004ZT Working PrincipleWhen the tantalum capacitor is energized, a capacitance is formed between the capacitor electrodes. This process of charging and discharging is known as the electrical double-layer capacitance. This process occurs when electrons move between the anode and the cathode in order to balance out the voltage potential. This process creates an electric field that follows Ohm’s law between the anode and the cathode. The electric field allows for a sufficiently a large capacity to be stored.Advantages of T491X337M004ZTThe T491X337M004ZT tantalum capacitor offers a number of advantages. First, it has a high volumetric efficiency due to its design. It requires a smaller size when compared to other types of capacitors. Second, it can operate at high temperatures which makes it ideal for applications that require higher temperatures. Third, it has a relatively high capacitance. Finally, it has low internal impedance and thus offers excellent stability and performance.Disadvantages of T491X337M004ZTT491X337M004ZT also has some disadvantages. First, these types of capacitors possess a higher cost when compared to other types of capacitors. Second, it can be subject to thermal runaway and thus highly sensitive to thermal demands present in the application. Third, its electrical specifications may shift with temperature changes.Applications of T491X337M004ZTThe T491X337M004ZT is mainly used in military, aerospace, telecom, audio, video, and medical applications. In military applications, these capacitors can be used in transceivers for frequencies below 500 MHz and high-pressure decoupling. In telecom applications, the T491X337M004ZT can be used in RF switches, filters, PLL and telecom rectifiers. In audio and video applications, these capacitors are used in power supplies and on-board filters. In medical applications, these capacitors are used in defibrillator power supplies, pacemakers, medical imaging, and many other medical devices.ConclusionThe T491X337M004ZT is a type of tantalum capacitor which is mainly used in military, aerospace, telecom, audio, video, and medical applications. It has a high volumetric efficiency, excellent stability, and performance due to its low internal impedance and high capacitance. The T491X337M004ZT also has some disadvantages such as a higher cost and sensitivity to thermal demands. In conclusion, the T491X337M004ZT is an ideal choice for applications that require high performance and stable power supplies.

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