T491B155M025AT Capacitors

Operating Temperature:	-55°C ~ 125°C
Failure Rate:	--
Features:	General Purpose
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
Lifetime @ Temp.:	2000 Hrs @ 85°C
Series:	T491
ESR (Equivalent Series Resistance):	5 Ohm
Type:	Molded
Voltage - Rated:	25V
Tolerance:	±20%
Capacitance:	1.5µF
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Reel (TR)

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Introduction to Tantalum CapacitorsTantalum capacitors are a type of electrolytic capacitor. These components are made up of tantalum, which is a rare, silver-gray metal. Tantalum capacitors are known for their high capacitance, low cost and high stability. These capacitors are used in a wide variety of applications such as power electronics, communication systems, and even consumer electronics.T491B155M025AT Application FieldT491B155M025AT is a tantalum capacitor specifically designed for high frequency applications such as in radio frequency (RF) circuits. It is also used in power applications such as in the circuits of battery backup systems, dc-to-dc converters, and voltage regulators.T491B155M025AT is also used in a variety of other applications such as in sensors, switches, clocks, and oscillators. The capacitor is highly stable and due to its high capacitance and low equivalent series resistance (ESR) it is a reliable choice in high-frequency (RF) or low-frequency (DC) applications.T491B155M025AT Working Principle T491B155M025AT is an electrolytic capacitor. This means that it consists of a layer of tantalum oxide which is deposited on a tantalum metal lead or anode. The layer of oxide is then polarized to form a dielectric between the anode and the cathode.When a voltage is applied, the oxides act like an insulator, blocking the direct flow of current between the anode and the cathode. However, when the voltage is high enough, electrical current will still be able to pass through, thus producing a capacitance. The capacitance of the capacitor is then proportional to the thickness of the oxide layer and the size of the electrodes.The main advantage of using a tantalum capacitor instead of other types of capacitors is its ability to remain stable and reliable even under harsh conditions. Its high capacitance and low equivalent series resistance (ESR) make it a good choice for applications such as high frequency and voltage regulation.ConclusionT491B155M025AT is a type of tantalum capacitor that is specifically designed for high frequency applications. The capacitor is highly stable and reliable even under extreme conditions. It is used in a variety of applications such as in RF circuits, power applications, sensors, and switches. Its high capacitance and low equivalent series resistance (ESR) make it a great choice for applications such as high frequency and voltage regulation.

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