T521D226M035ATE040

Series:	KO-CAP® T521
Packaging:	Tape & Reel (TR)
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Capacitance:	22µF
Tolerance:	±20%
Voltage - Rated:	35V
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:	--
Features:	General Purpose

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Tantalum-Polymer CapacitorsTantalum-Polymer Capacitors, also known as T521D226M035ATE040, are a type of electrolytic capacitor which combines the tantalum oxide film with a polymer material as its dielectric layer and use an oxidized electrolyte as the charge carrier, as opposed to a liquid electrolyte in conventional electrolytic capacitors. These capacitors are small, lightweight and have excellent electrical characteristics, making them suitable for a wide variety of applications.The main advantages of Tantalum-Polymer Capacitors, compared to traditional capacitors, is their higher capacitance, lower equivalent series resistance (ESR) and lower leakage current. This makes them suitable for applications requiring higher accuracy or better performance including RF and high-frequency filters, DC-DC converters and audio-amplifier circuits.The working principle of Tantalum-Polymer Capacitors is similar to a conventional electrolytic capacitor. A thin layer of conductive metal, such as tantalum pentoxide, is deposited on a metal substrate and then a polymer film is applied on top of the tantalum pentoxide layer. The combination of the two layers serves as the dielectric layer of the capacitor. The dielectric layer is then subjected to an electrochemical process which results in the formation of an oxide layer. The oxide layer acts as the charge carrier, allowing electrons to flow through the capacitor. The combination of the dielectric layer and the polymeric component offers significant advantages over a conventional tantalum or aluminum electrolytic capacitor. The polymeric component ensures a stable capacitance value and a low equivalent series resistance (ESR) compared to traditional capacitors. The electrical characteristics of Tantalum-Polymer Capacitors also remain largely unaffected by temperature and humidity.In addition to the various advantages offered by these devices, they are also much smaller and much lighter than traditional electrolytic capacitors, making them ideal for applications requiring a compact size and portability. They are ideal for applications such as powering and protection circuits, RF filters, DC-DC converters and audio amplifiers.Tantalum-Polymer Capacitors are also able to withstand higher operating voltages and peak, impulse voltages compared to traditional electrolytic capacitors. This makes them an excellent choice for high-power, high-voltage applications such as power supply filters.The cost of Tantalum-Polymer Capacitors is relatively high due to the cost of raw materials used in their production, however they are becoming increasingly popular as they offer superior performance and longevity compared to traditional electrolytic capacitors. As such, they are becoming increasingly popular in a variety of power-hungry and space constrained applications, where their small size and excellent performance makes them an attractive choice.In summary, Tantalum-Polymer Capacitors, also known as T521D226M035ATE040, are a type of electrolytic capacitor which combines the tantalum oxide film with a polymer material as its dielectric layer and use an oxidized electrolyte as the charge carrier. They offer a range of unique advantages compared to traditional electrolytic capacitors, such as higher capacitance and lower equivalent series resistance, making them suitable for a wide variety of applications, including powering and protection circuits, RF filters, DC-DC converters and audio amplifiers.

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