T540D226K020BT8605

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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Introduction

T540D226K020BT8605 is a miniaturized, high-density tantalum-polymer capacitor which is an essential component on miniaturized digital, RF, and power portable consumer products. It has superior electrical characteristics, robustness, and reliability. By increasing capacitance per unit volume to 76 mF/mm3 and decreasing dimensions to the 0402 package size, Tantalum - Polymer Capacitors is chosen as the favored capacitor technology for mobile devices, computers, and peripherals.

Application

T540D226K020BT8605 is widely used in the growing portable device industry, including computing, consumer electronics and communications technologies. It is also applicable in demanding applications such as computers, portable phones, handheld devices and other intelligent systems. Tantalum - Polymer Capacitors are used for power supply and decoupling, general circuits, clock circuits, signal processing and RF rectifier circuit applications.In decoupling and power supply applications, Tantalum - Polymer Capacitors offer improved performance due to its low equivalent series resistance (ESR). It enables a more stable voltage and lower noise compared to other capacitors. In signal processing and VCO applications, they offer high volume capacitance and tight tolerances on their capacitance stability. In RF rectifier circuits, they minimize insertion loss, isolate and extend the signal range, and provide power source stability.

Working Principle

T540D226K020BT8605 is made up of three layers: the dielectric layer which separates the two electrodes and typically composed of a polymer dielectric, the positive electrodes and negative electrodes. Its working principle is based on the electrostatic field created between these two electrodes. When a voltage is applied to the capacitor, an electric field is generated inside the dielectric material, which traps electric charges on each electrode.When capacitor is discharged, the electrostatic field dissipates and the electric charges leak away or recombine. When recharged, electric charges accumulated on each electrode and the electric field is re-generated. The strength of the electric field is proportional to the amount of electric charge accumulated on each electrode and the dielectric material separating the electrodes. The relation between electric field strength, voltage and capacitance is expressed by the equations as follows:

Conclusion

T540D226K020BT8605 is a miniaturized, high-density tantalum-polymer capacitor which is an essential component on miniaturized digital, RF, and power portable consumer products. Its main application is used in the growing portable device industry, including computing, consumer electronics and communications technologies. It has superior electrical characteristics, robustness, and reliability. Its working principle is based on the electrostatic field created between the two electrodes when a voltage is applied on the capacitor. With its price-performance ratio, Tantalum - Polymer Capacitors are often favored for their ability to reduce size and weight, increase capacitance per unit volume, and minimize ESR.

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