T86C685K025EBSS

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Tantalum capacitors, also known as Tantalum electrolytic capacitors, are polarized capacitors with tantalum metal as an anode, which is covered by an insulating oxide film; they are part of a larger group of electrolytic capacitors. They have one of the highest energy densities of any capacitor, and the highest resistance to corrosion of any electrolytic capacitor. The T86C685K025EBSS is a family of Tantalum capacitors from KEMET which includes a range of components with various size and temperature rating options. This article will look at the application field and working principle of this capacitor.

The T86C685K025EBSS is a small, conformally coated surface mount tantalum capacitor, designed for use in high-density applications. Its wide capacitance range, low ESR and high voltage ratings make it suitable for a wide range of applications, from decoupling circuits to active filter circuits and coupling/DC blocking circuits. It also has excellent reliability and high ripple current capabilities, making it suitable for use in harsh environments.

Tantalum capacitors are so named because the anode is made from a metal called tantalum. The electrolyte used in these capacitors is typically an alkaline solution of manganese dioxide, which acts as a capacitor dielectric. The capacitance of these components is mainly determined by the thickness of the oxide film on the tantalum anode and the surface area of the cathode electrode.

The working principle of the T86C685K025EBSS is similar to that of most electrolytic capacitors. The anode is connected to a positive voltage and the cathode is connected to ground. This causes electrons to flow from the negative terminal to the positive terminal, creating an electric field across the oxide film. This electric field is responsible for storing the electrical energy, producing a capacitance value that is dependent on the size of the oxide film and the surface area of the cathode electrode. The capacitance increase with increasing voltage, up to its rated voltage.

The T86C685K025EBSS is made up of a highly-conductive polymeric layer containing leadless terminations, connected to a tantalum anode plate and a manganese dioxide electrolyte. The capacitance of this capacitor when used at a temperature of 25°C is between 0.047 and 0.101 μF, and its rated voltage range is between 6.3 and 10 V. It also has an operating temperature range of -55 to 85°C.

The T86C685K025EBSS is a highly reliable and robust component suitable for use in applications where high reliability and long operational life are needed. It is equally suitable for applications where high performance is required, due to its low ESR and high ripple current capability. It is also suitable for use in low-impedance circuits due to its superior capacitance-to-volume ratio.

In summary, the T86C685K025EBSS is a family of small, conformally coated surface mount tantalum capacitors designed for use in high-density applications. It is particularly suitable for applications which require high performance and reliability, as it has an excellent capacitance-to-volume ratio, low ESR and high ripple current capabilities. It can be used in decoupling circuits, active filter circuits and coupling/DC blocking circuits, and in applications where high reliability and long operational life are needed.

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