T495C335K025ATE750

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Tantalum capacitors are widely used in military and aerospace, medical, industrial, commercial, and consumer applications due to their high stability, small size, long shelf life, and low price relative to other technologies. The T495C335K025ATE750 is a tantalum capacitor specifically designed for the military and aerospace industries with very high levels of performance. This paper will discuss the application field and working principle of the T495C335K025ATE750 and its advantages over other capacitors.

Applications

The T495C335K025ATE750 is a surface-mount, SMD tantalum capacitor that is ideal for applications that require high stability, reliability, and long storage life. Its coated-anode construction allows it to operate at higher temperatures than other tantalum capacitors and it can handle up to 500V without fail. It is suitable for a variety of applications, including use in avionics, instrumentation, military electronics, and space-based systems. Additionally, it is ideal for applications that require high capacitance at small sizes and high temperatures.

Working Principle

Tantalum capacitors use an electrolytic-filled dielectric made of an oxide of tantalum and are constructed with a tantalum anode, a dielectric layer, and a manganese dioxide-containing cathode. The dielectric layer acts as an insulator between the anode and the cathode and the capacitance of the device is determined by the size and shape of the oxide layer. The dielectric layer is charged through the anode and controlled by the cathode. When a voltage is applied to the capacitor, the oxide layer becomes polarized and charges up, storing energy as an electrostatic field.

When the capacitor is discharged, the energy stored in the electrostatic field is released, causing a current to flow through the cap. This process is what gives the capacitor its unique characteristics, such as self-healing and a high capacitance-to-volume ratio. The self-healing property of the capacitor means that any defects in the dielectric layer will heal themselves over time, leading to improved performance and higher reliability.

Advantages

The T495C335K025ATE750 has several advantages over other types of capacitors. Its high temperature rating and long storage life make it well-suited for use in military and aerospace applications where performance and reliability are paramount. Its coated anode construction also allows for operation at higher operating temperatures than other tantalum capacitors, allowing for more efficient power management. Additionally, its smaller size allows for more dense packaging, leading to a smaller form factor for the device. Finally, the device has a high capacitance-to-volume ratio, making it possible to achieve high levels of capacitance in a small package.

Conclusion

The T495C335K025ATE750 is a versatile SMD tantalum capacitor that can handle up to 500V and operate at high temperatures. It is ideal for use in avionics, instrumentation, military electronics, and space-based systems. It has a coated anode construction, high capacitance-to-volume ratio, long storage life, and self-healing dielectric. All of these characteristics combine to make it an ideal choice for high-performance and high-reliability applications.

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