T521D476M020ATE040

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):	0.122" (3.10mm)
Lead Spacing:	--
Manufacturer Size Code:	D
Ratings:	--
Features:	General Purpose
Series:	KO-CAP® T521
Packaging:	Tape & Reel (TR)
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Capacitance:	47µF
Tolerance:	±20%
Voltage - Rated:	20V
Type:	Molded
ESR (Equivalent Series Resistance):	40 mOhm @ 100kHz
Operating Temperature:	-55°C ~ 125°C

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Tantalum-Polymer Capacitors is a type of capacitor technology that uses a tantalum anode, an electrolyte and an ion-conducting. They are stable and reliable under extreme conditions, making them ideal for a wide variety of applications.T521D476M020ATE040 application fieldT521D476M020ATE040 is a type of Tantalum-Polymer Capacitors designed for high-voltage applications. They are often used as a replacement for aluminum electrolytic capacitors due to their higher voltage and low ESR (Effective Series Resistance). These capacitors are often used for DC-DC converters in power supplies, power electronics, automotive, military and aerospace applications.T521D476M020ATE040 capacitors are designed to handle up to 10,000 volts of reverse DC voltage and up to 230 volts of direct current. They have a low dielectric absorption and feature a very low ESR, allowing them to operate in high current applications with low voltage drops. The capacitance range is from 4.7uF to 22uF at a rated temperature of 105 degrees Celsius.T521D476M020ATE040 Working PrincipleT521D476M020ATE040 are built with a tantalum anode, a dielectric layer, and an ion-conducting polymer layer. The tantalum anode is made from an alloy of two elements – tantalum and oxygen, which creates a robust and aggressive anode material.When a voltage is applied to these capacitors, an electric field forms between the anode and the ion-conducting polymer layer. The electric field causes the ion-conducting polymer layer to swell and scatter electrons, which creates an electrical charge between the anode and the polymer layer. This charge is then stored in the capacitor.The dielectric layer is made of a special dielectric polymer that gives the capacitor its ability to store electrical energy. The dielectric layer means that the capacitors can handle a high reverse DC voltage without deteriorating.The capacitance value is determined by the capacitance of the dielectric layer, the size of the anode, the type of dielectric polymer and the thickness of the ion-conducting polymer layer. The combination of these factors determine the ideal capacitance of the capacitor and the maximum DC voltage it can handle.In conclusion, T521D476M020ATE040 capacitors are an excellent choice for high voltage applications. They feature a robust construction and a low ESR which allows them to operate in high current applications with low voltage drops. They are also extremely stable under extreme conditions and are widely used in power supplies, power electronics, automotive, military and aerospace applications.

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