T491X687M006ZT

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T491X687M006ZT, part of a product line from KEMET Electronic Solutions, is a series of Tantalum capacitors designed for both military and commercial applications. Used extensively in commercial and industrial electronic systems, Tantalum capacitors offer a significant performance advantage over similar aluminum electrolytic capacitors. In terms of capacitance, they are generally able to store at least twice as much charge as an aluminum electrolytic capacitor.

T491X687M006ZT is a two-terminal, surface mount device, constructed with tantalum foil as their anode, and solid manganese dioxide as their electrolyte. The capacitor features a molded case and is polarity-marked with the anode terminal on the positive side. The solid construction aids in both electrical and mechanical stability. These capacitors offer high reliability, excellent stability, low leakage current, and low equivalent series resistance.

T491X687M006ZT capacitors are typically used in various on-board, commercial and military applications, such as power supply, medical, telecommunications, automotive, and general application circuits. They can also be used in any circuit which requires a small, light, and reliable capacitor for use in conditions with relatively high temperature, vibration, or shock.

The working principle of the T491X687M006ZT capacitors is based on the use of the electrochemical properties of tantalum and manganese dioxide. When a voltage is applied across the two electrodes, the anode is slowly oxidized, forming a thin oxide layer that provides the components electrical and mechanical stability.

The excess current flows through the electrolyte which serves as an insulating barrier, while at the same time providing ions which reduce the oxide layer at the anode. This cycle allows the capacitor to stay within the specified voltage ratings and prevent any potential damage due to overcharging. The very thin oxide layer then contributes to the overall stability and reliability of the capacitor under various operational conditions.

The benefit of using T491X687M006ZT tantalum capacitors for their various commercial and military applications lies in the combination of their multiple advantages over other types of capacitors. They are smaller in size, higher in capacitance, and can handle voltages up to 25 volts. Additionally, they provide precise voltage regulation, high ripple current rating and are easy to mount. Lastly, in terms of operating temperature, they are able to tolerate up to 105 degrees Celsius, making them one of the most reliable and versatile capacitor types available today.

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