M39003/01-2281/98

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Tantalum Capacitors

Tantalum capacitors have become popular for their high-capacity storage capabilities, high stability, a wide range of operating temperatures, and low ESR (equivalent series resistance). They are mostly used in automotive, telecommunications, computing, and audio-visual applications. The M39003/01-2281/98 is a type of tantalum capacitor.

Applications

M39003/01-2281/98 capacitors are primarily designed for applications in military and avionic systems. They are commonly used for power supplies, audio systems, oscillators, inverters, analog circuits, and other applications requiring high stability. They offer high temperature performance, low ESR, low leakage currents, and high stability over wide temperature ranges.

Construction

The M39003/01-2281/98 capacitor is made from dissimilar electrolytic microplates and epoxy encapsulation. Its anode is made from high purity tantalum powder that is pressed into a preformed capsule. The cathode is formed out of a manganese dioxide paste that is applied to a nickel-plated steel foil anode. The endcaps are made of either aluminum or steel, depending upon the application. The entire device is encapsulated in a solid epoxy resin material to ensure reliability in use.

Working Principle

The M39003/01-2281/98 works based on the principle of electrolytic polarization. When a voltage is applied across the two terminals, the anode, which is the metal plate, attracts the ions in the electrolyte solution. The negative ions are attracted towards the positive electrode, and the positive ions are attracted towards the negative electrode. As a result, a layer of charge develops on the anode surface. This layer of charge is known as the electric double layer, or EDL. The EDL acts like a barrier and prevents current from flowing through the electrolyte.

This charge also acts as a capacitor, storing the energy from the applied voltage. When the applied voltage is removed, the electrons in the EDL slowly start to move back to their original positions, discharging the capacitor again. This process can be repeated as long as the capacitor is in working condition.

Advantages

M39003/01-2281/98 tantalum capacitors offer a number of advantages over other capacitors. These include high temperature performance, low ESR, low leakage current, and good tolerance over a wide temperature range. Additionally, they are smaller in size compared to other capacitors, which makes them suitable for use in high density components. Lastly, they are highly reliable and have long shelf life.

Disadvantages

The main disadvantage of M39003/01-2281/98 capacitors is their high cost. Additionally, their tendency to form a self-discharge can make them unsuitable for some applications. They also require careful handling, as they can be easily damaged by electrostatic discharge. Lastly, they are not suitable in applications where reverse voltage is likely to be present.

Conclusion

M39003/01-2281/98 tantalum capacitors are a type of capacitor that offers high reliability, wide temperature range, and high capacity. They are primarily used in military and avionic systems due to their high temperature performance, low ESR, and low leakage currents. However, they are more expensive than other capacitors, and require careful handling. Overall, the M39003/01-2281/98 is a reliable and high-performance capacitor that is suitable for a wide range of applications.

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