T540D227M004DH87057280

Series:	KO-CAP® T540
Packaging:	Tape & Reel (TR)
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Capacitance:	220µF
Tolerance:	±20%
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 CapacitorsTantalum-polymer capacitors are a type of capacitor that combines the benefits of a polymer electrolyte with the superior capacitive capabilities of tantalum oxide electrodes for electrochemical storage. These capacitors are widely used across a variety of industries because of their many benefits like their low equivalent series resistance (ESR), small size, low voltage operation and characteristic stability.The T540D227M004DH87057280 capacitor is a high-performance, miniature, tantalum-polymer capacitor that is guaranteed up to 1,000,000 hours at 105°C. This type of capacitor is ideal for demanding applications, including automotive electronics and high-reliability military applications. This device also has a wide voltage range of 2.5V to 5.5V and can handle reversed polarity.The basic principles behind tantalum-polymer capacitors is that they use a polymer electrolyte in combination with tantalum oxide electrodes to support electrochemical storage. This electrolyte is a gel-like material, much like a gel battery, that provides a high capacitive density over a wide temperature range and is relatively unaffected by temperature changes.The main benefit of using tantalum-polymer capacitors is their ability to provide consistently stable performance, even under extreme conditions. This makes them ideal for applications which require a reliable and consistent power source, such as medical systems, automotive systems and other applications where failure could potentially lead to serious consequences.The construction of a T540D227M004DH87057280 capacitor consists of a tantalum pellet and aluminum oxide dielectric layers that act as the positive and negative electrodes, respectively. The surface of the tantalum pellet is plated with aluminum oxide which serves as a barrier layer, protecting the pellet against corrosion and oxidation.The aluminum oxide dielectric layer is also very important, as it is the main medium used in this capacitor to store electrical charge. It is held securely between the two electrodes and its thickness is dependent on the value of the capacitor.The production process used to create tantalum-polymer capacitors involves a special vacuum process that sinter and presses both tantalum and aluminum oxide in a special solid electrolyte. The manufacturing process begins by taking an inert tantalum powder and pressing it into a dense pellet, which is then sintered at a temperature of 1742°F (950°C) to form a porous structure. The aluminum oxide powder is also sintered and combined with the raw tantalum pellet, with water acting as a solvent for the electrolyte and as a diluter for the aluminum oxide, creating a slurry which is then applied to the pellet and dried. The whole process if complete after a set of final tests and an insulating layer is applied to the finished capacitor.The resulting T540D227M004DH87057280 capacitor combines superior performance with a wide operating temperature range and improved voltage cycle life, making it ideal for applications that require a reliable and stable power source. Its high capacitance and low Equivalent Series Resistance (ESR) make it perfect for power electronics and radio frequency applications while its small size and light weight make it ideal for communication, automotive and military applications.

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