M39003/03-4061

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Tantalum capacitors are one of the most important components in electronic devices, and they play an integral role in a variety of areas. The M39003/03-4061 tantalum capacitor is a particularly versatile type of capacitors with a wide variety of application fields. This article will discuss its application fields and working principles.

Application Fields and Specifications

The M39003/03-4061 tantalum capacitor uses manganese dioxide as its anode material and tantalum pentoxide as its dielectric layer. The capacitor is designed according to military specification MIL-PRF-39003/3-4061 and is specifically meant for applications where an entire circuit board is exposed to extreme temperatures. The capacitor is usually dipped in epoxy resin, allowing it to be used in wet conditions or under conditions of high shock and vibration.

The capacitor is also highly capable in applications where it needs to be exposed to a high degree of electrical stress. Its maximum capacitance value ranges from 300 uF to 17000 uF, and its maximum voltage rating ranges from 5V to 50V. Since it is non-polarized, it can be used in circuits with alternating current without risk of reversing its polarity.

Working Principle

Tantalum capacitors are built with two metal plates (an anode and a cathode), separated by a dielectric material. When a voltage is applied across the plates, electrons are attracted to the positively charged anode. This causes a build-up of positive charge on the anode and negative charge on the cathode, forming an electrical field between the plates. This electrical field stores energy, which is released when the voltage is reversed, allowing electrical current to flow.

The amount of capacitance (the ability of the capacitors to store electrical energy) and voltage rating (the amount of voltage that it can safely withstand before it breaks down) of tantalum capacitors depends on the thickness of the dielectric layer, which is determined by the tantalum pentoxide. The reason why it is a better choice for extreme temperatures is because it has a higher dielectric strength, meaning that it is more resistant to an electric field voltage.

Conclusion

The M39003/03-4061 tantalum capacitor is a highly versatile type of capacitor with a wide variety of applications. It is capable of withstanding extreme temperatures, high shock and vibration, as well as a high degree of electrical stress, making it an ideal choice for many electronic devices. Its working principle is based on the electrical field generated by the two metal plates separated by a dielectric material. Thanks to its dielectric layer of tantalum pentoxide, it is able to store higher amounts of energy while maintaining a perfect safety rating.

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