199D475X0020B2B1E3

Operating Temperature:	-55°C ~ 125°C
Failure Rate:	--
Features:	General Purpose
Manufacturer Size Code:	B
Lead Spacing:	0.100" (2.54mm)
Height - Seated (Max):	0.300" (7.62mm)
Size / Dimension:	0.197" Dia (5.00mm)
Package / Case:	Radial
Mounting Type:	Through Hole
Lifetime @ Temp.:	1000 Hrs @ 85°C
Series:	TANTALEX®, 199D
ESR (Equivalent Series Resistance):	--
Type:	Conformal Coated
Voltage - Rated:	20V
Tolerance:	±20%
Capacitance:	4.7µF
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Reel (TR)

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Introduction
Tantalum capacitors (also known as tantalum electrolytic capacitors) are a type of capacitors which are widely used in many electronic applications. They are composed of a manganese dioxide cathode and an anode composed of pure tantalum metal. Unlike other capacitor technologies, tantalum capacitors offer very high capacitance in a small package making them ideal for a number of applications. Therefore, understanding the application field and working principle of a 19DS475X0020B2B1E3 tantalum capacitor is essential.
Application Field
Tantalum capacitors are highly utilized in many everyday electronic devices due to their ability to offer a range of capacitance values with relatively low ESR (Equivalent Series Resistance) in a very small package. They are popularly seen in applications such as memory backup, motherboards, short-term energy storage, mobile phones, gaming devices, portable medical equipment, and various other consumer electronics. The 19DS475X0020B2B1E3 model is especially suited for use in high-frequency circuits, where its low ESR can provide significant benefits.
Working Principle
The working principle of a tantalum capacitor is based on the electrochemical double layer effect. In short, the capacitor is composed of an anode (the tantalum metal) and a cathode (the manganese dioxide). When a voltage is applied to the capacitor, it causes a reverse polarization of the anode, which generates an electric field, creating a dielectric layer that acts to store the electrical charge. The charge stored within the capacitor is determined by the size of the anode and cathode surface area and the voltage being applied.
Conclusion
The 19DS475X0020B2B1E3 tantalum capacitor is an integral component for many electronics and offers a myriad of benefits over traditional capacitors. Its small package size and high capacitance value make it perfect for use in a variety of high-frequency circuits, where its low ESR can provide significant performance benefits. Furthermore, its operating principle is based on the electrochemical double layer effect and the charge stored within the capacitor is determined by the size of the anode and cathode surface area and the voltage applied.

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