TPSB475K025R0900 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), 1210
Mounting Type:	Surface Mount
Lifetime @ Temp.:	--
Series:	TPS
ESR (Equivalent Series Resistance):	900 mOhm
Type:	Molded
Voltage - Rated:	25V
Tolerance:	±10%
Capacitance:	4.7µF
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 electrolytic capacitor that is composed of a tantalum sintered anode, an electrolyte, and a cathode foil, with a dielectric of tantalum pentoxide. There are both solid and wet tantalum capacitors and they are commonly used in a variety of applications. The TPSB475K025R0900 is a type of solid tantalum capacitor produced by the American component manufacturer. It has a ESR of 9 mΩ, a capacitance of 475 μF, a voltage of 25 V, and a temperature coefficient of 25 ppm/K. It is typically used in applications such as highend audio and video, high-end military and aerospace equipment, medical, industrial and automotive/transportation applications.

Application Field and Working Principle

Tantalum capacitors are most often used in filter circuits and decoupling applications. They are especially well suited for use in high-frequency applications due to their low equivalent series resistance (ESR) and low leakage. They are also helpful in circuits that require robust voltage accuracy, due to their low self-inductance and low surface leakage. Other applications include power supply, storage and RF noise reduction for high frequency circuits.The working principle of a tantalum capacitor is fairly simple. When a voltage is applied, positive ions from the anode react with the electrolyte and the reaction forms an insulating layer of tantalum pentoxide on the surface of the anode. This layer helps to provide the capacitor with a stable voltage and low leakage. The cathode is also connected to a voltage source and does not require a reactant to form an insulating layer. When the potential between the anode and the cathode is reduced or removed, the capacitance of the capacitor decreases, indicating that the capacitor has been discharged.Tantalum capacitors are widely used in high performance and high reliability applications due to their low leakage, low ESR and excellent accuracy. They are also known for their high temperature performance and are suitable for use in extreme temperature environments. While they are more expensive than alternative option, they deliver reliable and consistent performance in challenging environments.

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