T495X687M004ZTE040

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Tantalum capacitors are one of the most important components in power systems, providing a range of important functions for electronic circuits. The T495X687M004ZTE040 is a commonly used tantalum capacitor, known for its excellent performance and reliability. This article explores the application field and working principle of this part.

Application Field

The T495X687M004ZTE040 is a medium-sized SMD (surface-mount device) type tantalum capacitor with an extended temperature range of -55 to 125°C. This extended temperature range makes it ideal for use in a wide range of industrial and military environments, such as automotive, aerospace, and military applications. The part is also particularly well-suited for use in switching power supplies, audio amplifiers, and voltage regulators.

Due to its excellent temperature performance, the T495X687M004ZTE040 is the preferred choice for applications that require high surge pulse protection and low ESR (equivalent series resistance) values. The part features a range of features designed to improve performance, including a low profile, high capacitance/voltage values, and high temperature stability. Additionally, its non-polar construction makes it suitable for AC/DC and bipolar applications.

Working Principle

The T495X687M004ZTE040 utilizes a tantalum dielectric, making it a non-polarized device. The dielectric is composed of a thin layer of a solid electrolyte, which is sandwiched between two metal electrodes. When a voltage is applied across the device, current flows through the dielectric, charging the capacitor and storing a charge.

When the voltage drops, the capacitor slowly loses its charge, discharging the stored energy. Therefore, the capacitor acts as a charge reservoir, allowing current to flow in and out as needed. The dielectric also provides a high level of insulation against electrical surges and short-circuits. The capacitor’s larger surface area, combined with its non-polar design, makes it ideal for use in dual power supply systems.

The capacitance of the T495X687M004ZTE040 is determined by its dielectric’s thickness and the area of the metal electrodes. As the capacitor is charged and discharged, the amount of charge stored is determined by its capacitance rating. Typically, the capacitor is rated with a working voltage of 16V and a capacitance value of 2.7 uF.

Conclusion

The T495X687M004ZTE040 tantalum capacitor is a medium-sized SMD type part with excellent extended temperature range and non-polar construction. It is the preferred choice for applications that require high surge pulse protection and low ESR values, as well as for use in dual power supply systems. The capacitor’s dielectric provides a high level of insulation against electrical surges and short-circuits, and its capacitance is determined by its dielectric thickness and the area of the metal electrodes.

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