T491A154K050ZT

Lifetime @ Temp.:	2000 Hrs @ 125°C
Failure Rate:	--
Features:	General Purpose
Ratings:	--
Manufacturer Size Code:	A
Lead Spacing:	--
Height - Seated (Max):	0.071" (1.80mm)
Size / Dimension:	0.126" L x 0.063" W (3.20mm x 1.60mm)
Package / Case:	1206 (3216 Metric)
Mounting Type:	Surface Mount
Series:	T491
Operating Temperature:	-55°C ~ 125°C
ESR (Equivalent Series Resistance):	15 Ohm
Type:	Molded
Voltage - Rated:	50V
Tolerance:	±10%
Capacitance:	0.15µF
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Tantalum Capacitors

Tantalum capacitors often referred to as tantalum electrolytic capacitors, are a type of electrolytic capacitor, which have the anode (positive plate) made of tantalum and use an oxide of oxide layer as the dielectric. Tantalum capacitors are characterized by their low ESR, small size, and excellent frequency characteristics. The T491A154K050ZT is one example of a tantalum capacitor.

Application Field

Tantalum capacitors are widely used in many electronic applications including military, aerospace, automotive, medical, portable devices, and consumer applications. Many industries rely on capacitors, such as computers, telecommunications, aerospace, and power supplies. They can be used as bypass capacitors, smoothing capacitors, emergency backup power supplies, etc. Computer and telecom industries have been relying on tantalum capacitors for decades to provide reliable operation of their equipment. The use of tantalum capacitors in military applications has also been steadily increasing with their use in radar, missile guidance, and communications systems.

Working Principle

Tantalum capacitors have an oxidized layer of tantalum as the dielectric layer, on which a high voltage is applied. In the presence of a voltage applied for this capacitor, electrons flow through the tantalum oxide (Ta2O5) layer, thus forming the electric charge. This charge, in turn, creates an electric field that creates the electrostatic energy. This energy is what is responsible for the transfer of charge between the two plates of the capacitor. When a high current is drawn, the capacitance of the capacitor decreases, reducing its capacitance. The capacitance of the capacitor also decreases with increasing temperature.The advantage of tantalum capacitors is that they are able to handle large amounts of current without significant losses compared to other types of electrolytic capacitors. They are also able to work at high frequencies and in extreme conditions. The capacitance and voltage ratings of these capacitors vary widely and depend on the size and application.

Conclusion

Tantalum capacitors have a wide range of applications from consumer products to military and aerospace systems. These capacitors offer high frequency characteristics and low ESR, making them suitable for a variety of applications. The T491A154K050ZT is one type of tantalum capacitor which is widely used in many applications.

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