M39003/09-0375

Operating Temperature:	-55°C ~ 125°C
Failure Rate:	S (0.001%)
Features:	Military
Manufacturer Size Code:	C
Lead Spacing:	--
Height - Seated (Max):	--
Size / Dimension:	0.289" Dia x 0.686" L (7.34mm x 17.42mm)
Package / Case:	Axial
Mounting Type:	Through Hole
Lifetime @ Temp.:	--
Series:	Military, MIL-PRF-39003/9, CSR21
ESR (Equivalent Series Resistance):	230 mOhm
Type:	Hermetically Sealed
Voltage - Rated:	50V
Tolerance:	±20%
Capacitance:	10µF
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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Tantalum Capacitors

Tantalum capacitors are widely used in electronic circuits for their excellent electrical performance and stability over temperature, low leakage, and long life. The M39003/09-0375 is a surface-mounted, molded tantalum capacitor designed for high frequency application in high reliability applications. In this post, we will discuss the application field and working principle of this capacitor.

Application Field

The M39003/09-0375 is suitable for industrial and military electronics, aerospace avionics, and data acquisition systems, where reliable, high performance, and long-term stability of components is desired. This capacitor is most commonly used in power supplies, precision instrumentation, telecommunications, signal conditioning circuits, and medical applications.

Working Principle

The M39003/09-0375 is an electrolytic capacitor that uses tantalum as its plates and an electrolyte such as ethylene glycol as its dielectric material. The tantalum plates form the interior of the capacitor and are polarized with the electrolyte attached to them. An electrical current is applied to one of the plated, causing charge to be stored on each of the plates and creating an electric field in between them. This electric field is responsible for holding the charge on the plates, much like the polarization of a battery.The M39003/09-0375 also features several innovations in design, such as a pocketed anode design. This design allows for the anode and cathode electrodes to be close to each other yet still maintain a pocketed gap between them. This small gap helps to reduce the amount of eddy current losses, allowing for a higher current rating. The M39003/09-0375 also has a low ESR (equivalent series resistance), which is an important feature in power applications. This low ESR helps to reduce the chances of premature failure due to thermal runaway, which can be caused by excessive current flowing through the capacitor. Low ESR also improves the capacitor\'s ability to discharge energy quickly, making them more suitable for high frequency applications. The M39003/09-0375 utilizes a sealing process to ensure water resistance and overall reliability. The outer case is filled with an absorbent mass of barium titanate that absorbs any moisture that may enter the device. This helps to prevent corrosion which could lead to failure.

Conclusion

The M39003/09-0375 is an excellent choice for any high frequency application in high reliability applications, due to its low leakage, excellent electrical performance, and long life. It features several innovations in design that help to improve its current rating, reduce eddy current losses, and maintain its reliability. This makes it an excellent choice for both industrial and military electronics as well as other demanding applications.

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