M39003/09-3055H

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Tantalum Capacitors

Tantalum capacitors are widely used in a variety of applications due to their small size, low cost, and high capacitance characteristics. A common type of tantalum capacitor is the M39003/09-3055H, a surface mount device designed to operate in high temperature environments and minimize power dissipation. This article will discuss the application field and working principle of the M39003/09-3055H.

Application Field

The M39003/09-3055H is an MPP/SN Capacitor valued for its small size, low cost, and reliable performance in harsh environments. It employs a solid tantalum anode and a two-layer cathode consisting of manganese dioxide and a defined conductive polymer. This capacitor is designed for use in high temperature applications, offering excellent heat-dissipation performance and a shelf life that can exceed 6000 hours. It is commonly used in switching and rectifying circuits, converter modules, motor control equipment, engine control systems, and various energy storage applications.

Working Principle

The M39003/09-3055H works by using a tantalum anode that is in contact with the cathode composed of two layers of material. The first layer, made of manganese dioxide, acts as a dielectric, while the second layer is made of a conductive polymer that is resistant to electrochemical reactions. The combination of both layers creates an effective, low-loss capacitor which is strong and reliable in high temperature applications. The capacitor is protected from reverse-voltage stress by a voltage-sensing fuse which will disconnect the capacitor in the case of a reverse polarity.

Conclusion

The M39003/09-3055H is a widely used surface mount tantalum capacitor capable of providing reliable performance in high temperature applications. Its advantages include a small size, low cost, and a long shelf life. Its two-layer cathode design provides an effective solution to reduce power dissipation and offer protection from reverse-voltage stress. Because of these characteristics, the M39003/09-3055H is an ideal choice for use in switching and rectifying circuits, converter modules, motor control equipment, engine control systems, and various energy storage applications.

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