T540D477K004BH8710

Series:	KO-CAP® T540
Packaging:	Tape & Reel (TR)
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Capacitance:	470µF
Tolerance:	±10%
Voltage - Rated:	4V
Type:	Molded
ESR (Equivalent Series Resistance):	40 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):	0.122" (3.10mm)
Lead Spacing:	--
Manufacturer Size Code:	D
Ratings:	COTS
Features:	High Reliability

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Tantalum – Polymer Capacitors are an essential part of any electronics system. They are utilized in electronics assemblies and circuit boards to provide electrical energy storage and a quick response times to events and fluctuations in the system. The T540D477K004BH8710 is a specific type of Tantalum – Polymer Capacitor, designed and manufactured by Vishay. It is specifically designed to offer a low ESR (equivalent series resistance) in applications that require extremely reliable performance, such as in automotive systems or medical equipment. The T540D477K004BH8710 has a capacitance of 47µF, a rated voltage of 25V and a maximum ripple current of 3.2A. This makes it a suitable choice for applications that require a large amount of starting energy, such as in motor controllers, or that require high current ripple performance, such as in LED lighting systems. The capacitor is also capable of withstanding temperatures up to 105°C. The structure of the T540D477K004BH8710 is a combination of two distinct capacitors: one made of a tantalum material, the other designed from a polymer. The tantalum material has superior strength and reliability, making it an excellent choice for applications requiring reliable performance. It also has a long life expectancy and low ESR values, making it a desirable choice for medical and automotive equipment. The polymer layer provides a unique combination of high capacitance and low ESR values, plus the ability to withstand higher temperature ranges. This combination of layers gives the T540D477K004BH8710 its ability to store more energy, handle more current, and operate reliably in a higher temperature range than a single layer capacitor.The working principle behind the T540D477K004BH8710 is fairly simple. The capacitor acts as a storage device and it stores electrical energy in the form of a uniform electric field between its two sets of conductors. When it is connected to a voltage source, electrons move from the negative conductor to the positive conductor and the capacitor is charged. When the power source is disconnected, the electrons are pushed back in the opposite direction and the capacitor is discharged. The capacitor can then store the electrical energy until it is again connected to a power source. The T540D477K004BH8710 is an ideal choice for applications that require high performance and reliability. Its combination of tantalum and polymer materials make it particularly suitable for automotive and medical systems. Its low ESR values, along with its large capacitance and current handling potential, make it an ideal choice for LED lighting systems, motor controllers, and other similarly demanding applications.

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