M39003/09-2034H

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Tantalum Capacitors

Tantalum capacitors, also known as tantalum electrolytic capacitors, are a type of electrolytic capacitor, a component of electronic circuits. They are made of tantalum metal which acts as an anode, covered by an insulating oxide layer that acts as the dielectric, surrounded by conductive material that acts as the cathode. Tantalum capacitors are polarised components and therefore, must be used in the correct orientation. The value of the capacitance is determined by the size of the oxide layer which is formed when manufacturing the component.

The M39003/09-2034H is a tantalum capacitor from Vishay, the world’s largest manufacturer of discrete semiconductors & passive electronic components. This capacitor is an ultra-low-profile, wrap-around-style component with a molded case and is mainly used in applications where the space is limited. It can handle temperatures from -55°C to +125°C and is also suitable for use in military and aerospace applications.

Application Field

The M39003/09-2034H tantalum capacitor is mainly used in applications where board space is limited or when high density is required. This component is widely used in military and aerospace applications as it can handle high temperatures. Some of its typical applications include:

• High-end consumer electronics
• High voltage DC/DC converters
• Mobile phones
• Computer motherboards
• Global positioning systems (GPSs)
• Inertial navigation systems
• Radar systems
• Military and aerospace systems

Working Principle

Tantalum capacitors are polarised components and need to be used in the correct orientation. In the case of the M39003/09-2034H, the anode is marked with a white band which indicates the positive lead. The working principle of this capacitor is based on the electrostatic properties of the oxide layer which acts as the dielectric. During operation, an electric field is created across the component which causes the electrons to be attracted to the anode and leaving the cathode with an equal number of free oppositely charged ions. This flow of charge creates a charge reservoir between the two electrodes and stores the charge. The capacitance value of the component is related to the surface area of the dielectric, in this case, the oxide layer.

In conclusion, the M39003/09-2034H is a tantalum capacitor designed for applications with a restricted space, especially in military and aerospace systems. Its working principle is based on the electrostatic properties of the oxide layer which acts as the dielectric and is correlated to the surface area of the component.

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