M39003/03-3012/TR

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Tantalum capacitors are small electronic components that store and release electrical energy. They are used in a wide variety of applications in electronics, such as filtering, energy storage, modulation, and coupling. The M39003/03-3012/TR series is particularly designed for high reliability and extended temperature range types and is suitable for use in military, avionics, and down-hole applications.

The main benefit of the M39003/03-3012/TR series is its high capacitance range, increasing from 0.22µF to 470µF. The capacitors are available in both molded and dipped cases, as well as leaded and SMD versions. The capacitors have a working voltage of 6.3V to 50V, and offer higher pulse current operation, increased reliability, and a wide temperature range.

The construction of a tantalum capacitor is made up of three components: an anode, the electrolyte, and a cathode. The anode is typically made of tantalum metal, with an oxide film insulator preventing the flow of electric current. The electrolyte is usually a manganese dioxide paste, and the cathode is a solid conducting material such as conductive metal coating. This construction creates a capacitor that is highly efficient and has a very low leakage. The capacitance value of the capacitor is determined by the anode area and the thickness of the insulator.

The M39003/03-3012/TR series uses an electrolytic construction, where the anode is formed of tantalum, and the cathode is a conductive metal coating. This construction offers several advantages such as low ESR, high ripple current and operating temperature ranges from -55°C to +125°C, meeting the requirements of military and down-hole applications.

The working principle of the M39003/03-3012/TR series is relatively simple. When the power is applied, an electric field is generated between the anode and the cathode, and this field causes electrons to flow into the anode\'s oxide layer. This process increases the capacitance as electrons accumulate, and the oxide layer acts as an insulator, preventing further current flow. When the power is removed, the electrons return to the cathode, and the capacitance is decreased to its original value.

Overall, the M39003/03-3012/TR series of tantalum capacitors is an excellent choice for military, avionics and down-hole applications due to its high capacitance range, voltage range, pulse current, reliability and wide temperature range. Its construction using an electrolytic construction, with an anode made of tantalum metal and a cathode of conductive metal coating, makes the capacitor highly efficient and with very low leakage.

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