550D127X9015S2B

Series:	TANTALEX®, 550D
Packaging:	Bulk
Lead Free Status / RoHS Status:	--
Part Status:	Active
Capacitance:	120µF
Tolerance:	±10%
Voltage - Rated:	15V
Type:	Hermetically Sealed
ESR (Equivalent Series Resistance):	--
Operating Temperature:	-55°C ~ 125°C
Lifetime @ Temp.:	1000 Hrs @ 125°C
Mounting Type:	Through Hole
Package / Case:	Axial
Size / Dimension:	0.351" Dia x 0.786" L (8.92mm x 19.96mm)
Height - Seated (Max):	--
Lead Spacing:	--
Manufacturer Size Code:	S
Ratings:	--
Features:	General Purpose
Failure Rate:	--

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Tantalum CapacitorsIntroductionTantalum capacitors are solid electrolytic capacitors that use a fixed layer of tantalum pentoxide as the dielectric layer in the capacitor. Tantalum capacitors offer several advantages over traditional electrolytic capacitors, including higher operating temperature range, lower leakage current, and higher capacitance per unit volume. The high capacitance of these capacitors combined with their low cost makes them ideal for use in diverse applications, such as power supplies, automotive, industrial, military, and medical applications.Application Field and Working PrincipleThe 550D127X9015S2B is a tantalum capacitor, designed for use in a variety of applications. This capacitor offers a small, surface-mount package that allows for high-density mounting that consumes less board space than traditional electrolytic capacitors. The device is a non-polarized capacitor with an operating temperature range from -55° to +105° C and consists of a tantalum anode, tantalum pentoxide dielectric layer, and a manganese dioxide electrolyte. The capacitor has a rated voltage of 10Vdc and a capacitance of 1.5μF, with an equivalent series resistance (ESR) of 5Ω max and a maximum leakage current of 0.2 μA at 25°C. The capacitor also has a dielectric strength of 12.2 kV max and a stable capacitance over temperature.The capacitor works by using the electrical conductivity of the tantalum ion conducting between the anode and the electrolyte to create a constant field in the capacitor. When a voltage is applied, the current across the capacitor brings ions from the electrolyte into the anode, forming a thin layer of tantalum oxide on the anode and a thin layer of manganese dioxide on the electrolyte. This combination of materials results in the creation of a capacitor, with the capacitance determined by the thickness of the dielectric layer and the area of the anode.Benefits and DrawbacksTantalum capacitors offer several benefits over traditional electrolytic capacitors. They provide higher capacitance per unit volume and that allows for greater circuit density in given space. The higher breakdown voltage and low ESR of tantalum capacitors make them more suitable for use in much smaller packages. The device also offers low leakage current, and thus it can be used in applications that require higher current handling capabilities. Furthermore, the capacitor is resistant to thermal shock, mechanical shock and pressure, making it ideal for operation in harsh environments.However, tantalum capacitors have some drawbacks. The high cost of tantalum salts and powder, make them more expensive than traditional electrolytic capacitors. Since the device is non-polarized, care should be taken when installing the capacitor as the polarity of the connections is unimportant. In addition, there is a risk of catastrophic failure in the device due to thermal runaway, which occurs when the capacitor voltage rises beyond its rated value due to heat generated by the current flowing through it. Therefore, sufficient cooling must be provided for high voltage and high current applications.ConclusionThe 550D127X9015S2B is a tantalum solid electrolytic capacitor with an operating temperature range from -55° to +105° C. It offers high capacitance, low ESR and leakage current, and is suitable for a variety of applications, such as power supplies, automotive, industrial, military, and medical applications. Despite having some drawbacks, such as cost and risk of thermal runaway, the capacitor is still a reliable and efficient device for many applications.

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