TCJA476M006R0070 Capacitors

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Tantalum-polymer capacitors are becoming increasingly popular as a global capacitor solution. In this article, we will explore the application field andworking principle of TCJA476M006R0070, a specific tantalum-polymer capacitor.

Tantalum-Polymer capacitors offer two major benefits. The first is their ability to offer a high-temperature performance. This is a crucial consideration, as many circuits experience temperatures of over 100°C in their operational environments. As compression-moulded devices, Tantalum-Polymer capacitors offer a unique solution for these high-temperature applications.

In comparison to other capacitor technologies, Tantalum-Polymer capacitors have a range of advantages: high capacitance density and volumetric efficiency; high-frequency operation; robustness; low package parasitics; and the ability to offer excellent capacitance stability during extended periods of operation or even after pre-conditioning.

TCJA476M006R0070 is a 4.7 µF, reverse-polarity capacitor in a polyphenylene sulphide, case-packaged format. It has a standard temperature range, operating between -55°C to +105°C. This device is optimised for use in high-temperature applications and offers high-temperature stability, as well as a low internal series resistance.

The working principle of TCJA476M006R0070 is based on the use of a tantalum pentoxide layer as the dielectric. This layer is deposited between two metal plates, and acts as a barrier between the two plates. As an electric field is applied to the plates, the pentoxide layer begins to polarise, increasing its resistance to electric current.

This increased resistance is the basis for the capacitor\'s operation. The electrical field between the plates decreasing as the dielectric material\'s resistance increases, resulting in a diminishing current flow, and thus a capacitor that stores charge. This charge is then released when the applied voltage is reversed, or the capacitor is discharged.

Due to the use of polyphenylene sulphide as the packaging material, the capacitor is highly robust and is not prone to stress cracking or other failure modes as are common with other capacitor types. In addition, the packaging material also allows for a lower ESR (equivalent series resistance), offering improved operation in transient conditions.

In conclusion, TCJA476M006R0070 is a robust and efficient tantalum-polymer capacitor, offering a range of advantages over other capacitor designs. This capacitor is optimised for use in high-temperature applications and offers excellent capacitance stability during operational or pre-conditioning periods.

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