M39003/09-0343/TR

Operating Temperature:	-55°C ~ 125°C
Failure Rate:	S (0.001%)
Features:	Military
Manufacturer Size Code:	D
Lead Spacing:	--
Height - Seated (Max):	--
Size / Dimension:	0.351" Dia x 0.786" L (8.92mm x 19.96mm)
Package / Case:	Axial
Mounting Type:	Through Hole
Lifetime @ Temp.:	--
Series:	Military, MIL-PRF-39003/9, CSR21
ESR (Equivalent Series Resistance):	100 mOhm
Type:	Hermetically Sealed
Voltage - Rated:	20V
Tolerance:	±5%
Capacitance:	56µF
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Reel (TR)

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Tantalum Capacitors

The M39003/09-0343/TR is a type of tantalum capacitors. It is a surface-mount device made of a sintered tantalum anode with a high-k dielectric. It is available in a range of capacitances and maximum voltage ratings, and offers higher capacitance-voltage ratings than aluminum and ceramic capacitors.

Application Field

Tantalum capacitors are widely used in a variety of applications due to their highly stable characteristics and high capacity-voltage ratings. Common applications of these capacitors include filtering, bypassing, and timing circuits in power supplies, computers, laptops, and mobile phones. They can also be used in decoupling applications in consumer electronics, as well as in automotive, medical, and defense applications.

Working Principle

Tantalum capacitors work on the principle of using an oxide dielectric layer between two metal electrodes. When a voltage is applied to the anode and cathode, it forms an electric field within the dielectric material, creating an energy barrier that prevents current from flowing between the terminals. This structure makes these capacitors more reliable and resistant to voltage spikes. The most common type of tantalum capacitor is the sintered anode type, which is made by sintering a tantalum wire mesh anode and then depositing a manganese dioxide dielectric layer on top. This type of capacitor offers high capacitance-voltage ratings, low equivalent series resistance (ESR), and high stability. Other types of tantalum capacitors include solid electrolytic and miniaturized capacitor technology, such as molded mini-caps and SMD capacitors. Solid electrolytic capacitors are tantalum capacitors with an insulated anode and a electrolyte-filled cathode, while molded mini-caps and SMD capacitors are designed to be highly miniaturized versions of tantalum capacitors with a polymeric dielectric. These miniaturized capacitors have lower capacitance-voltage ratings than sintered tantalum capacitors, but offer higher temperature stability and reliability.

Conclusion

Tantalum capacitors are widely used in a variety of applications, due to their highly stable characteristics and high capacitance-voltage ratings. The M39003/09-0343/TR is one of the most common types of tantalum capacitors, and is available in a range of capacitances and maximum voltage ratings. It works by forming an electric field within an oxide dielectric layer, creating an energy barrier that prevents current from flowing between two metal electrodes. Various types of tantalum capacitors are available, each tailored to specific applications requirements, depending on the requirements of power supply, computer, laptop, or mobile device.

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