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Tantalum Capacitors

A tantalum capacitor is a type of electrolytic capacitor, a two-terminal passive component that stores energy in a electric field. It consists of permanently polarized or ‘soaked’ electrodes which differ from each other in their surface polarity, leading to a polarized capacitance. Nowadays, electrolytic capacitors are mostly used in applications where RC filters are required to achieve a smooth current flow or voltage drop.

The M39003/09-0003/HSD capacitors are included in the group of tantalum capacitors. These are non-polarized wet electrolytic capacitors that are designed with three terminals. They are especially designed for high temperature (above 80ºC) and are suitable for applications with high frequency.

The construction of the M39003/09-0003/HSD consists of two electrodes, one metallic and another one tantalum, both soaked with electrolyte. The electrodes are placed between two conductive spacers. The metallic electrode is generally made of a manganese oxide layer, while the second electrode is made of the tantalum anode. The main characteristics of these capacitors are that it can achieve a temperature operation up to 125ºC, while having a temperature coefficient of -200ppm/ºC.

The primary application for these capacitors are audio crossover networks, frequency-selective networks, time-delay circuits, analog filters, high temperature and high-frequency oscillators and filters, active low-pass filters, damping resistors, and other practical purposes. The main design differences between the M39003/09-0003/HSD capacitors and an ordinary tantalum capacitor are the metalized dielectric, the temperature coefficient, the impedance, the stability, and the size.

When used in a circuit, the M39003/09-0003/HSD capacitors work in the same way as other electrolytic capacitors. The capacitors are polarized, which means that the first terminal should be connected to the positive voltage, while another should be connected to the negative voltage. The metallic layer of the two electrodes acts as an insulation, and prevents any current to pass between the two electrodes. When a voltage is applied across the terminals, an electric field is generated, which attracts and stores the electrons within the capacitor. The capacitor then discharges its energy when the voltage is removed from the terminals.

This type of capacitor also has several advantages over other types of capacitors, including its ability to withstand high temperatures, its low impedance, and its robustness. Additionally, the M39003/09-0003/HSD capacitors are very reliable and offer an extended shelf life. They are also highly resistant to shock, vibration and extreme heat.

In conclusion, the M39003/09-0003/HSD capacitor is a great solution for applications in which a stable, high-temperature, and high-frequency capacitor is required. The benefits of this type of capacitor are many, including its temperature coefficient, its impedance, its stability, and its size. Additionally, it offers higher reliability and more reliable performance than other types of capacitors.

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