T540D476M020DT8705

Operating Temperature:	-55°C ~ 125°C
Features:	High Reliability
Ratings:	COTS
Manufacturer Size Code:	D
Lead Spacing:	--
Height - Seated (Max):	0.122" (3.10mm)
Size / Dimension:	0.287" L x 0.169" W (7.30mm x 4.30mm)
Package / Case:	2917 (7343 Metric)
Mounting Type:	Surface Mount
Lifetime @ Temp.:	2000 Hrs @ 125°C
Series:	KO-CAP® T540
ESR (Equivalent Series Resistance):	100 mOhm @ 100kHz
Type:	Molded
Voltage - Rated:	20V
Tolerance:	±20%
Moisture Sensitivity Level (MSL):	--
Capacitance:	47µF
Lead Free Status / RoHS Status:	--
Part Status:	Active

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Tantalum - Polymer Capacitors: T540D476M020DT8705 application field and working principle
Tantalum-polymer capacitors are known for their combination of high capacitance Levels and higher reliability than their traditional electrolytic counterparts, making them essential components of many applications. The T540D476M020DT8705 is a polymer-tantalum capacitor typically used in digital audio systems and automotive applications. In this article, we will explore the properties and characteristics of the T540D476M020DT8705 as well as its many possible applications and its working principle.
The T540D476M020DT8705 is a surface mount, high-temperature, automotive electronic grade tantalum-polymer capacitor. This type of capacitor is beneficial for power supply bypass and power conversion filter applications, due to its low equivalent series resistance (ESR). It features a 2.0Farad capacitance, a 20V working voltage, a max voltage up to 21 volts, and a +125°C operating temperature. Its physical dimensions are 8.5 x 4.5 x 6.5 mm.
The T540D476M020DT8705 is known for its extensive use in applications such as automotive power systems, digital audio systems, telecommunications systems, and motor control systems. It is often used to reduce ripple in power supply lines, to reduce electrical noise, and for other power conversion filter needs. The capacitor is ideal for automotive applications due to its high temperature operation and its ability to handle large amounts of power.
The Working Principle of the T540D476M020DT8705 is relatively simple. Like most capacitors, it consists of two plates, separated by an insulator, also known as dielectric material. The difference between tantalum-polymer capacitors and other capacitors is mostly in the dielectric material they use. Standard capacitors use an oxide or film of oxide or electrolytes, while polymer-tantalum capacitors use a polymer dielectric material. The polymer material results in a very low ESR, which makes it ideal for application that require power supply bypass and power conversion filtering.
When an electric current is applied to the capacitor, a charge builds up on the plates, effectively storing energy. When a load is connected to the capacitor, the charge is released, providing the necessary power to the circuit. The lower the ESR of the capacitor, the better the performance of the capacitor, as a low ESR results in less power loss and a higher capacity for storing energy.The T540D476M020DT8705 capacitor is ideal for applications that require low ESR and a high temperature operating environment, such as those encountered in automotive systems.In conclusion, the T540D476M020DT8705 is a surface mount, high-temperature, automotive grade tantalum-polymer capacitor. Its high temperature rating and low ESR make it ideal for power supply bypass and power conversion filter applications, as well as for digital audio and automotive power systems. Its 2.0Farad capacitance, 20V working voltage, and +125°C operating temperature make it an excellent choice for these types of applications. Its Working Principle is simple, involving the use of two plates separated by an insulating dielectric material, usually a polymer, which creates the low ESR needed for power conversion filtering. This article has given a brief overview of the properties, characteristics, and applications of the T540D476M020DT8705 capacitor.

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