T540D687M2R5AH85057610

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):	40 mOhm @ 100kHz
Type:	Molded
Voltage - Rated:	2.5V
Tolerance:	±20%
Capacitance:	680µF
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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Tantalum - Polymer CapacitorsT540D687M2R5AH85075610 is a tantalum-polymer capacitor part. The tantalum-polymer capacitor type is increasingly being used in the defense and aerospace industries for a wide range of applications due to its high performance features. Capacitors are a type of passive electronic components, used for storing energy for a short time and for smoothing voltage surges in electrical circuits. They come in many different types, such as electrolytic, ceramic, film, motor run, supercapacitors and of course, tantalum-polymer.Tantalum-polymer capacitors are the most recent type of capacitor to emerge on the market and they provide some significant benefits over traditional tantalum capacitors. They’re seen as the next generation of capacitors, thanks to their the high capacitance values, low equivalent series resistance (ESR) and small packages.The main advantage of tantalum-polymer capacitors over standard tantalum capacitors is their increased capacitance. They use a different construction than other types of capacitors; instead of using a solid dielectric, they use a polymer dielectric with a conductive polymer as the anode. This allows them to have larger capacitance values than traditional tantalum capacitors, up to double the typical values.Due to this increased capacitance and the fact their ESR is very low, thus offering excellent stability over temperature, tantallum-polymer capacitors are ideal for use in applications where high capacitance is needed; such as power supply smoothing, energy management to reduce battery current and as input filters for analogue sensors. They’re also well suited for low voltaged dc-dc converters, used for providing power for microprocessors and other integrated circuits, as well as for LED lighting, switching regulators, mobile phones and digital displays. T540D687M2R5AH85075610 capacitors are extremely reliable and offer a great surface mount option when compared to other types of capacitors. They have high volumetric efficiency, corrosion resistance and excellent thermal stability, meaning they’re well suited for long operational life and humid environments. Tantalum-polymer capacitors’ working principle is very simple. They consist of two metal plates separated by a plasticized dielectric. When a voltage is applied to the metal plates, an electric field is created. This electric field creates an attraction between the plates, which creates the capacitance, the storage of energy. The electric field also causes the dielectric to move outwards, thus increasing the dielectric strength of the capacitor and increasing its capacitance. This movement of the dielectric is known as “dielectric relaxation”.In conclusion, tantalum-polymer capacitors are rapidly becoming the capacitor of choice for many engineers. T540D687M2R5AH85075610 is a reliable, high performance part, suitable for a wide variety of applications. Its increased capacitance, low ESR and small size make it the perfect choice.

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