M39003/09-0129

Operating Temperature:	-55°C ~ 125°C
Failure Rate:	P (0.1%)
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):	70 mOhm
Type:	Hermetically Sealed
Voltage - Rated:	15V
Tolerance:	±10%
Capacitance:	70µF
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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Introduction

Tantalum capacitors are electrolytic capacitors that are widely used in many electronic devices. The M39003/09-0129 capacitor is a relatively recent model that has become increasingly popular for its small size, high temperature operation and long life. In this article, we will discuss the application fields and working principle of the M39003/09-0129.

Application fields

The M39003/09-0129 is specifically designed for applications with high temperature requirements or that require long life and high reliability. This capacitor can be used in applications that require capacitors that are not affected by shock, vibration or temperature variations. It is also suitable for use in applications that require low parasitic inductance and lead length.Some of the areas in which the M39003/09-0129 is used include:

• High temperature operations for automotive, aerospace, military and railway applications.
• Voltage regulation in power supply and switch mode power supplies.
• Signal filtering in medical instruments and other electronic equipment.
• Data line decoupling in communications and telecom equipment.
• Power supply decoupling in computers and consumer electronics.

The M39003/09-0129 is one of the most reliable and versatile capacitors available and is used in many demanding applications. It offers superior performance in a wide variety of environments and is designed to provide reliable operation over a long life cycle.

Working Principle

The M39003/09-0129 is an electrolytic tantalum capacitor. It consists of an anode and a cathode, both made of tantalum. The anode is coated with an electronic grade manganese dioxide (MnO2) oxide layer which acts as the electrolyte. The cathode is connected to a case which provides the mechanical and electrical stability for the capacitor. When a voltage is applied to the capacitor, an electric current passes through the MnO2 layer and forms an "electrolyte film" between the anode and the cathode. This electrolyte film is responsible for the capacitor\'s high capacitance and low parasitic inductance. The MnO2 layer also provides an additional level of reliability and stability in high temperature applications.

Conclusion

The M39003/09-0129 is a high quality electrolytic capacitor designed for applications that require high temperature operation and long life. It is used in many demanding applications and offers superior performance in a wide variety of environments. The advantage of the M39003/09-0129 comes from its unique design which incorporates an MnO2 layer for superior reliability and stability in high temperature applications.

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