195D334X9025S2T

Operating Temperature:	-55°C ~ 125°C
Failure Rate:	--
Features:	General Purpose
Manufacturer Size Code:	S
Lead Spacing:	--
Height - Seated (Max):	0.056" (1.42mm)
Size / Dimension:	0.143" L x 0.072" W (3.63mm x 1.83mm)
Package / Case:	1507 (3718 Metric)
Mounting Type:	Surface Mount
Lifetime @ Temp.:	--
Series:	TANTAMOUNT®, 195D
ESR (Equivalent Series Resistance):	--
Type:	Conformal Coated
Voltage - Rated:	25V
Tolerance:	±10%
Capacitance:	0.33µF
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Reel (TR)

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Tantalum Capacitors

Tantalum capacitors are important and reliable components for a wide variety of different technological applications. They are mainly used for the suppression of noise in high frequency circuits, and for bypassing, filtering, and storage. Their superior characteristics when compared to ordinary aluminum electrolytic capacitors make them extremely popular and sought after today. This article will address the application field and working principle of the tantalum capacitor model 195D334X9025S2T.

Application Field

Tantalum capacitors often offer superior performance than ‘regular’ aluminum electrolytic capacitors due to their superior characteristics including higher volumetric efficiency, and higher capacitance per unit volume. This makes them ideal for applications in which space and cost are tight, such as in mobile device and computer motherboards, or in the modern day car, where higher levels of capacitance are quickly needed in harsh environmental conditions.Tantalum capacitors are also commonly used in high-frequency, RF, and pulsed circuits and systems, due to their better temperature stability and lower ESR (equivalent series resistance). They can also be used as a charge storage device in battery-backed applications that require a large capacitor with a manageable size.

Working Principle

The working principle of tantalum capacitors comes from their core material which is a di-electric made from a tantalum foil that is coated with an oxide layer. This oxide layer acts as the dielectric of the capacitor, allowing a capacitance ratio that is higher than other commonly used capacitors. The current-carrying element of the capacitor is the oxide layer of the cathode, and its anode is the tantalum. When a voltage is applied to the capacitor, the oxide layer acts as a barrier between the cathode and the anode, allowing a capacitance ratio that is higher than other commonly used capacitors.In the event of an overvoltage, a hard dielectric breakdown can occur, leading to a catastrophic failure of the capacitor. This is where the temperature and voltage characteristics of the tantalum case come into play. Namely, tantalum capacitors’ cases are designed to allow the surface temperature of the capacitor to remain below the thermal breakdown point of the dielectric, creating a large amount of thermal capacity. In the event of an overvoltage, the capacitor can safely dissipate the heat, and the capacitance remains undamaged.

Conclusion

In conclusion, the tantalum capacitor model 195D334X9025S2T is typically used for the suppression of noise in high frequency circuits, bypassing, filtering and storage of energy, thanks to its superior characteristics to ordinary aluminum electrolytic capacitors. It works on the principle of a di-electric formed from a tantalum foil coated with an oxide layer, allowing a capacitance ratio that is higher than other commonly used capacitors. The construction of tantalum capacitors’ cases also helps to ensure a sound and reliable operation in the event of an overvoltage.

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