Operating Temperature:	-55°C ~ 125°C
Failure Rate:	B (0.1%)
Features:	Military
Manufacturer Size Code:	A
Lead Spacing:	--
Height - Seated (Max):	--
Size / Dimension:	0.135" Dia x 0.286" L (3.43mm x 7.26mm)
Package / Case:	Axial
Mounting Type:	Through Hole
Lifetime @ Temp.:	--
Series:	Military, MIL-PRF-39003/3, CSR23
ESR (Equivalent Series Resistance):	--
Type:	Hermetically Sealed
Voltage - Rated:	20V
Tolerance:	±10%
Capacitance:	3.9µF
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Reel (TR)

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Tantalum Capacitors: M39003/03-2049/TR Application Field and Working Principle

Tantalum capacitors are electronic components used for diverse purposes in a variety of electronic circuits and devices like consumer electronics, communication networks, and computing equipment. This article focuses on M39003/03-2049/TR tantalum capacitors and their application fields and working principles.

Description

M39003/03-2049/TR is a type of tantalum capacitor usually molded in small packages to be integrated in pieces of electronic equipment. It combines two plates of an electrolytic solution with metal plates separated by a piece of tantalum oxide, and a reliable sealant to ensure the capacitor´s durability. M39003/03-2049/TR capacitors feature high temperature capacitance stability as well as resistance to high temperatures and humidity.

Application Field

M39003/03-2049/TR capacitors are used in mission-critical electronic equipment, such as military and medical devices, to provide stable performance in temperatures between - 55°C and 125°C. These capacitors are also used in standard circuits as they provide a longer lifespan. Their capacitance stabilizes when exposed to temperature changes, making them reliable and suitable for frequency response applications.

Working Principle

M39003/03-2049/TR tantalum capacitors rely on the Faraday´s law of constant exchange of electrochemical energy. As current passes through the capacitor, an electrolytic solution composed mainly of ammonium and manganese salts is released to build up on the two plates. This electrolytic solution forms a thin layer of oxide, as both plates are usually made of a tantalum alloy. The oxide insulator layer between the plates establishes a barrier to electrical current, creating an electrical charge between them. The voltage rating of the capacitor is indicated by the number on the body of it and is related to the thickness of the oxide insulator layer. The rating also puts a constraint on the voltage and temperature at which the device will act, and determines the device\'s leakage current. As the capacitance increases, the inverse is true: the maximum voltage decreases and the maximum leakage current increases.

Conclusion

M39003/03-2049/TR tantalum capacitors are highly reliable electronic components used in mission-critical applications. These devices are used for their robust design and long service life, while providing stable performance in high temperatures. Their working principle is based on the Faraday´s law of constant exchange of electrochemical energy, and is related to the thickness of the oxide insulator layer.

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