T95R397M6R3LZAS

Tantalum Capacitors

Tantalum capacitors, also known as tantalum electrolytic capacitors, are solid electrochemical capacitors that use tantalum as the anode component. They can provide a high capacitance value in a very small element size. The T95R397M6R3LZAS is a specific type of tantalum capacitor. It has a capacitance of 397 μF, a voltage rating of 35 VDC and a maximum ripple current of 3.0 A. This makes it suitable for use in various applications which require a high capacitance-to-volume ratio, such as decoupling capacitors, power-supply filtering capactors and passive analog filters.

Application Field and Working Principle

The T95R397M6R3LZAS is primarily used as a decoupling capacitor. This is because it is capable of sourcing a large amount of energy with very low ferroresonance noise. It is also advantageous due to its very low failure rate compared to other electrolytic capacitors. It is mainly used in digital applications such as switching power supplies, 3.3V and 5V logic supply filtering, and processor based board applications.

The principle of operation of a tantalum capacitor is very similar to that of an electrolytic capacitor. An electrolytic capacitor is a device consisting of two metallic plates that are separated by a dielectric, typically a gel. The metal plates are connected by a conducting electrolyte which acts as a bridge between the two plates and allows electrons to flow between the positive and negative leads of the capacitor. The tantalum capacitor, however, is different in that it uses a layer of tantalum oxide as the dielectric insulator instead of a gel. This results in a much higher capacitance-to-volume ratio, which makes it more suitable for applications that require a high capacitance level.

The capacitance of a tantalum capacitor also depends on the surface area of the plates, as well as the distance between them. The tantalum oxide layer between the plates is a semiconductor, similar to the semiconductor used in field-effect transistors. This means that the capacitance of the device varies with voltage, which can be used to program the capacitance of the device. For example, a capacitor with a given capacitance can be adjusted to a different capacitance by varying its voltage.

In addition to its advantages in terms of capacitance, the T95R397M6R3LZAS also has low resistance compared to alternatives. This makes it ideal for applications that require fast response times and low power consumption. It also has very good temperature performance, making it suitable for use in high-temperature environments.

Conclusion

The T95R397M6R3LZAS is a type of tantalum capacitor that is primarily used as a decoupling capacitor. It has a high capacitance-to-volume ratio, low failure rate, and very good temperature performance. These qualities make it suitable for use in high-temperature environments and in a range of digital applications, such as switching power supplies and processor boards.