T540D226K020AT8505

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:	±10%
Moisture Sensitivity Level (MSL):	--
Capacitance:	22µF
Lead Free Status / RoHS Status:	--
Part Status:	Active

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Tantalum-Polymer Capacitors provide a unique combination of performance characteristics including low ESR, high reliability, and demountability, which make them attractive to designers in multiple industries and applications. The T540D226K020AT8505 is a part of this general category. This device is a high-reliability, high-temperature, polymer-tantalum solid-electrolyte capacitor designed for applications such as telecommunications, base-stations, and other power-sensitive applications.The T540D226K020AT8505 is built to withstand temperatures up to 125ºC, and features a low ESR of 3.2 ohms and a capacitance of 220uF. Its 20V rating allows for robust performance in power sensitive applications, and its design includes a sintered anode construction, which provides additional reliability and durability. In terms of application fields, the T540D226K020AT8505 is ideal for applications that require a high level of reliability and performance, such as power supplies, DC-DC converters, AC-DC converters, transient protection circuits, voltage-regulating circuits, and filter circuits. This device is also used in consumer electronics such as smartphones, tablets, and other portable devices. Furthermore, its high temperature rating makes it suitable for automotive applications, medical equipment, and other high-temperature environments.Regarding its working principle, the T540D226K020AT8505 is a Tantalum-Polymer capacitor that utilizes a Tantalum dielectric material separated from a conductive element through a solid polymer electrolyte. The device is constructed as a cylindrical device consisting of a metal vestibule filled with a tantalum powder. This tantalum powder is then compressed into a pellet and baked in a vacuum. The resulting pellet is hermetically sealed with conductive epoxy, allowing the electrical current to flow freely through it. The positive and negative electrodes of the capacitor are then brought onto the same side, separated by the polymer electrolyte.When voltage is applied across the capacitor, the electrons from the anode attract the ions from the electrolyte, creating a miniature double-layer capacitor. This process is known as polarization. The capacitance value is determined by the reducing physical distance between the two plates of the capacitor, as the electrostatic force of attraction causes them to collapse.Tantalum-Polymer capacitors are known for their low ESR (Equivalent Series Resistance), which is a measure of the internal resistance of the capacitor. This low ESR helps reduce power loss due to resistance and therefore improves efficiency. Additionally, these capacitors also offer superior stability in high-temperature environments and are resistant to mechanical shock. This makes them an attractive choice for a variety of applications.Overall, the T540D226K020AT8505 belongs to the general category of Tantalum-Polymer capacitors, and is a high-reliability, high-temperature, polymer-tantalum solid-electrolyte capacitor designed specifically for power-sensitive applications. It is suitable in a wide range of applications, including power supplies, DC-DC converters, AC-DC converters, transient protection circuits, voltage-regulating circuits, filter circuits, consumer electronics, automotive applications, and medical equipment. This device offers superior performance characteristics, such as low ESR, high reliability, and demountability, which make it an attractive choice for designers in multiple industries.

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