T540D477M003AH87057280

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:	3V
Tolerance:	±20%
Capacitance:	470µF
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Reel (TR)

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Tantalum - Polymer Capacitors

T540D477M003AH87057280 is a type of tantalum - polymer capacitor. It is also known as a polymer hybrid capacitor, which is a multi-anode device. Capacitance values are typically 0.047uF up to 330uF. In terms of technology, the capacitor consists of a ceramic dielectric material, an anode made of tantalum, and a high-grade passivation layer. They are high-density and low-ESR capacitors.

Application Field

The T540D477M003AH87057280 can be deployed for both high frequency and high voltage applications. In terms of high frequency, such capacitors are used in switching equipment and mobile phone base station designs. This is because polymer hybrid capacitors offer high capacitance and low ESR in a smaller size than the conventional tantalum capacitor.In terms of high voltage applications, such capacitors are used for filtering, power supply decoupling, blocking, and timing circuits. It is important to note that polymer hybrid capacitors require very low voltage builds. The T540D477M003AH87057280 is also used in consumer electronics , such as smartphones and other hand-held devices.

Working Principle

The T540D477M003AH87057280 works in the same way as other capacitors, which is by storing a charge, while allowing the flow of current across two electrodes. The ceramic material in the dielectric layer acts as an insulator, allowing charge to be stored, while blocking the flow of current. The anode layer, made of tantalum, is responsible for storing the charge and providing an output when a current is applied. Finally, the high-grade passivation layer protects the electrodes and dielectric material from corrosion and other environmental factors.At an operational level, the T540D477M003AH87057280 combines the features of both conventional electrolytic and ceramic capacitors, such as large capacitance values with low equivalent series resistance (ESR). Depending on the specific application and frequency requirements, polymer hybrid capacitors can have ESR from 0.5 to 8 mOhm.

Conclusion

The T540D477M003AH87057280 is a type of tantalum - polymer capacitor which is suitable for high frequency and high voltage applications. The main advantages of this capacitor are high capacitance and low ESR in a small size. Its working principle is the same as conventional capacitors, which is to store a charge and allow current to flow between two electrodes. In order to achieve its full efficiency and safety, the T540D477M003AH87057280 should be handled and deployed with care.

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