T540D157M006AH8605

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:	6.3V
Tolerance:	±20%
Capacitance:	150µF
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Reel (TR)

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Tantalum - Polymer Capacitors

T540D157M006AH8605 is an example of a tantalum-polymer capacitor – a relatively new version of the electrolytic capacitor which offers much higher performance than traditional electrolytic varieties. These capacitors are basically composed of two electrodes; the anode and cathode, which are separated by a tantalum-polymer material. This material helps to create high-capacity, low-ESR, and low-leakage products while maintaining a small size, making them perfect for deployment in mobile and compact applications.

Applications

T540D157M006AH8605 capacitors are typically used in very low voltage, low-power applications where large capacitance is required. Examples of such applications include power management systems, power-supply filters, bypass circuits and AC/DC conversion, clock oscillator circuits, automotive, and many other general purpose applications.Tantalum-polymer capacitors are highly attractive for low voltage applications because of their high capacitance for a very small size. This makes them extremely desirable for high-density, high-frequency signal transmission, as well as for high-speed drive circuits. Additionally, because tantalum-polymer capacitors have a very low equivalent series resistance (ESR), this increases operating efficiency and reduce losses due to self-heating.

Working Principle

Tantalum-polymer capacitors operate differently than conventional electrolytic capacitors. Instead of being made up of a solid anode and electrolyte, they make use of an electrolyte that is present in the form of an alkali solution. The electrolyte is essentially a liquid containing charged ions that are attracted to an anode electrode consisting of an inert material, such as tantalum. Because of this, the anode electrode is able to store a much larger charge than other types of capacitors. Additionally, the electrolyte helps to provide a layer of insulation between the electrodes, further increasing the capacitance and improving the power efficiency of these capacitors. Within the capacitor, the anode and cathode electrodes are separated by a tantalum-polymer material which acts as a dielectric – this helps to increase the capacitance and reduce the ESR. Additionally, the material also helps to reduce the leakage current and also aids in preventing the build-up of electrical charges on the surface of the capacitor.

Advantages

Tantalum-polymer capacitors offer a number of advantages over other types of electrolytic capacitors. Firstly, they have high capacitance values, allowing for more energy storage in a smaller package size. Secondly, they are very low ESR, meaning that they are highly efficient and will generally last a long time with no loss in performance. Thirdly, their leakage current is very low, leading to improved reliability. Finally, due to their low temperature coefficient, these capacitors can operate reliably in a wide range of temperatures.

Conclusion

T540D157M006AH8605 is a type of tantalum-polymer capacitor which offers significant advantages over traditional electrolytic capacitors. These capacitors are typically deployed in low voltage, low-power applications with high capacitance requirements, such as power management systems, power-supply filters and AC/DC conversion. In addition to this, they have high capacitance, low ESR, low leakage current, and low thermal coefficient, further adding to their appeal.

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