M39003/03-4014/TR

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Tantalum Capacitors

The M39003/03-4014/TR is a tantalum capacitor, a type of electrolytic capacitor. A tantalum capacitor is a device designed to store electrical charge, and is commonly used in industrial, automotive, military, and aerospace applications.

Application Field

Tantalum capacitors are versatile components, and are found in a wide range of applications. They are used to filter noise, stabilize power / voltage, and serve as coupling devices. They are especially suited for automotive electronics due to their robust construction and long service life.

Common application fields of the M39003/03-4014/TR include:

• Analog and digital circuitry
• DC/DC converters
• Smoothing filters for power supplies
• High-frequency switch-mode power supplies
• Power rails for automotive microcontrollers
• Communication systems, such as GPS and Bluetooth

Working Principle

Tantalum capacitors are constructed with a tantalum wire anode and an electrolyte cathode. The anode is coated with an oxide film to allow for the increased capacity for storing an electric charge. When a voltage potential is applied across the capacitor, a current flows from the anode to the electrolyte cathode. This current ionizes the electrolyte, forming a weak acid solution. The positively charged ions are attracted to the anode, and the negatively charged ions are attracted to the cathode. This process creates an effective dielectric, and an electric field between the anode and cathode, allowing the capacitor to store a charge.

The capacitance of a tantalum capacitor can vary significantly based on external influences such as temperature, voltage, and current. This makes the device especially beneficial for its application in various automotive systems, particularly those providing active voltage stabilization.

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