M39006/31-0221H

Operating Temperature:	-55°C ~ 125°C
Failure Rate:	R (0.01%)
Features:	Military
Manufacturer Size Code:	T3
Lead Spacing:	--
Height - Seated (Max):	--
Size / Dimension:	0.406" Dia x 0.828" L (10.31mm x 21.03mm)
Package / Case:	Axial
Mounting Type:	Through Hole
Lifetime @ Temp.:	--
Series:	Military, MIL-PRF-39006/31, CLR91
ESR (Equivalent Series Resistance):	910 mOhm
Type:	Hermetically Sealed
Voltage - Rated:	30V
Tolerance:	±20%
Capacitance:	470µF
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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Tantalum Capacitors: M39006/31-0221H Application Field and Working Principle

Tantalum capacitors are small, high-value capacitors made from tantalum, an elemental metal. They are used in many applications and are well known for their high capacitance-voltage (CV) ratings, low leakage currents, and low physical size. To further understand their application field and working principle, this article on the M39006/31-0221H tantalum capacitor will explore its details.The M39006/31-0221H is a surface-mount tantalum capacitor with a 22µF capacitance value. It has a maximum working voltage (MWV) of 16VDC, a maximum operating temperature of 125°C, a shelf life of five years, and a maximum leakage current of 0.1CV. It features an axial lead that is sealed in epoxy resin and measures 1.25mm in height by 2.8mm in diameter.The application field of the M39006/31-0221H includes use in power supplies, filters, decoupling capacitors, and reverse protection. It is widely used in military and aerospace applications, where its availability and reliability may be more critical than in other industries. On a commercial level, it is popular in hand-held devices, cell phones, and other low-power applications.The working principle of a tantalum capacitor is similar to that of other types of capacitors, where a dielectric material is sandwiched between two conductive plates. In the case of a tantalum capacitor, the dielectric is an oxide layer formed on the surface of the tantalum anode. The anode is composed of a sintered powder and is surrounded by an electrolyte-soaked porous material. The cathode is an inert, non-soluble metal foil separator material.When the capacitor is charged, a voltage is applied to the anode, and electrons travel through the dielectric layer between the anode and the cathode. The electrons accumulate on the anode and the cathode, forming a positive and negative charge, respectively. As the capacitor charges, the electric field between the anode and the cathode strengthens, and the capacitance increases.In summary, the M39006/31-0221H tantalum capacitor is a small, high-value surface-mount capacitor used in a variety of applications, including power supplies, filters, decoupling capacitors, reverse protection, and hand-held devices. It features an axial lead that is sealed in epoxy resin and can reach temperatures up to 125°C. Its working principle is similar to other capacitors, with an oxide layer sandwiched between a sintered powder anode and an inert, non-soluble metal foil cathode. With its reliable performance and ample availability, the M39006/31-0221H is a dependable choice for many tantalum capacitor needs.

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