F931V155KAA Capacitors

Operating Temperature:	-55°C ~ 125°C
Failure Rate:	--
Features:	General Purpose
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
Lifetime @ Temp.:	--
Series:	F93
ESR (Equivalent Series Resistance):	7.5 Ohm
Type:	Molded
Voltage - Rated:	35V
Tolerance:	±10%
Capacitance:	1.5µF
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Reel (TR)

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Overview of Tantalum Capacitors

Tantalum capacitors are a type of electrolytic capacitor, generally composed of a solid tantalum anode, coated with an oxide layer an electrolyte, and a cathode of metal joined together with a conductive sleeve to the anode. The oxide layer acts as the dielectric and creates an electrostatic field between the anode and the cathode. The capacitor stores electrical potential energy in the form of an electric field or an electrostatic field and is used in electronics circuits to provide a defined amount of capacitance.Tantalum capacitors, compared to other types of capacitors, offer higher capacitance in a smaller package and have better frequency stability, a longer life and higher temperature stability which makes them suitable for many applications. The most common form of tantalum capacitor is the axial leaded, a small, cylindrical type that consists of the anode, the dielectric layer, the cathode and the conductive sleeve. Additionally, these components are sealed in a plastic, epoxy or ceramic case to reduce environmental exposure.

F931V155KAA Application Field and Working Principle

The part number F931V155KAA is a low ESR, solid ta​ntalum capacitor from AVX Corporation. It is a surface mounted, radial leaded, molded tantalum capacitor, which is often found in DC-DC converters and power semiconductor modules for its long life, low ESR and low leakage characteristics. It is primarily used for high temperature applications and computer memory modules.In terms of its working principle, this particular capacitor works by turning the applied electrical energy into a charge stored on the two conducting plates, with the ceramic coating acting as a dielectric that helps to maintain the charge by preventing the current from passing between the two plates. The material used for the dielectric creates an electric field between the plates, which allows the capacitor to store energy and release the energy when needed. The ceramic coating serves to reduce the leakage current and provide voltage stabilization.The F931V155KAA capacitor is well-suited to high temperature and ripple current applications, as it has superior temperature performance, high ripple current capability and low power losses. This makes it suitable for DC-DC converters, computer memory modules and other temperature-sensitive applications.

Conclusion

Tantalum capacitors are a type of electrolytic capacitor, which have a dielectric layer that creates an electrostatic field between the two plates. This allows them to store electrical potential energy and provide a defined amount of capacitance. The F931V155KAA capacitor from AVX Corporation is an example of a low ESR, solid tantalum surface-mounted capacitor, which is suited for high temperature and ripple current applications, such as DC-DC converters, computer memory modules, and other temperature-sensitive applications.

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