M39003/01-7093H

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Tantalum capacitors are used in a range of applications where capacitance, size, and low ESR are important factors. The M39003/01-7093H is a type of tantalum capacitor, designed for high-frequency switching and advanced analog circuit applications. It has a wide temperature range (‐55°C to +125°C) and low ESR at the rated temperature. This article seeks to explain the application field and working principle of this capacitor.

What is a Tantalum Capacitor?
A tantalum capacitor (also called a tantalum electrolytic capacitor) is an electrolytic capacitor, a passive electronic component that stores energy in the form of an electrostatic field. It is made of tantalum metal which acts as an anode, with an insulating oxide layer acting as the dielectric, plus a cathode and electrolyte. Unlike non-electrolytic capacitors, which generally require low voltage, tantalum capacitors require higher voltages in order to store and release energy.

M39003/01-7093H Tantalum Capacitor
The M39003/01-7093H is a surface-mount, snap-in case, axial leaded tantalum capacitor. It is a polymeric version with a nominal capacitance of 470 μF (microFarads), and a wide operating temperature range of -55°C to +125°C. It also offers a low ESR (Equivalent Series Resistance) of 10 mΩ (milliOhm) at the rated temperature. This capacitor is suitable for high-frequency switching power applications and advanced analog circuits.

M39003/01-7093H Application Field
The M39003/01-7093H is suitable for a wide range of applications, such as high-frequency switching power supplies, general-purpose switching regulators, and advanced analog circuits. It is especially suitable for high-efficiency DC/DC converters. It is also suitable for use in various electronic circuits, such as audio amplifiers, TV sets, clock circuits, and consumer electronics.

M39003/01-7093H Working Principle
Tantalum capacitors are fundamentally electrochemical devices. The anode of the capacitor is composed of a tantalum metal that has been treated to form an oxide layer on its surface. The cathode is formed of a metal such as manganese dioxide. When a voltage is applied across the capacitor, electrons from the cathode are attracted to the anode and flow through the oxide layer. This electrochemical action creates a field of charge on both sides of the oxide layer that stores energy. This charge can then be released when the voltage across the capacitor is reversed.

The M39003/01-7093H has a wide operating temperature range and low ESR, making it suitable for a range of applications. It is also highly reliable and long-lasting, making it an excellent choice for use in high-frequency switching power supplies, advanced analog circuits, and other electronic products.

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