M39003/01-2972

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Tantalum capacitors are one of the most basic electronic components, ubiquitous in a wide range of electronic devices from sophisticated medical equipment to everyday consumer electronics. They are highly reliable and have an extremely long lifespan. The M39003/01-2972 tantalum capacitor is a low-profile, high-capacitance, surface-mount device with a variety of potential applications. This article will discuss the application field and working principle of the device.

The M39003/01-2972 capacitor is an ideal choice for high-density applications, due to its low profile of 0.43mm height above the board. This makes it perfect for situations that require a compact board size, such as the increasingly popular miniature, wearable electronic devices. It features a standard MnO2 cathode and high volumetric efficiency for long-term reliability and stable behavior when operated at temperatures from -55 to +125°C.

The M39003/01-2972 is a polarized device; therefore, its correct polarization should be observed in all applications. It is designed for use in applications where low impedance is required over a wide temperature range. Typically, this part is used for coupling, blocking, filtering or bypass applications, such as computers, communications, instrumentation, and consumer electronics.

Tantalum capacitors are electrochemical capacitors, also known as “solid electrolytic” capacitors. They are constructed with two metal plates, an insulator such as tantalum pentoxide, and an electrolyte solution. When voltage is applied, a current passes through the electrolyte solution and an electrically conductive oxide layer forms on the surface of the first metal plate. This forms the so-called “capacitor dielectric”, which acts as a dielectric material between the two metal plates. The amount of capacitance of the device depends on the thickness of the dielectric layer.

The M39003/01-2972 tantalum capacitor is also relatively prone to failure due to the inherent instability of the electrolyte solution. Over time, the electrolyte solution may evaporate or leak, causing the oxide layer to become thinner and resulting in a decrease in capacitance and/or an increase in equivalent series resistance (ESR). In addition, the device can be damaged by overvoltage, applied reverse voltage, soldering, or vibration if the capacitor is not correctly utilized.

In conclusion, the M39003/01-2972 tantalum capacitor is a highly reliable and long-lasting device that can be utilized in a wide range of electronic applications due to its low-profile design and high volumetric efficiency. Its working principle is based on the formation of an electrically conductive oxide layer on the metal plate, which acts as a dielectric material between the two plates. This device, however, can be prone to failure if not utilized correctly.

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