T491D336K016AT7128

Tantalum Capacitors

T491D336K016AT7128 is a type of tantalum capacitor, a specialized non-polarized capacitor composed of tantalum, an ore of the transition metal tantalum. As with other capacitors, tantalum capacitors store electrical charge and release it when needed. They come in two varieties: surface mount and through-hole mount, of which the former is more popular in today’s electronics.

Applications and Uses

Tantalum capacitors are typically used in consumer and electronic products, such as cell phones, digital cameras, DVD players, LCD displays, and industrial electronics and control equipment. They are valued for their relatively high capacitance-to-volume ratios, low ESR (Equivalent Series Resistance), low leakage currents, and low self-inductance. This makes them more suitable for low frequency applications and circuit design elements such as filters, timing circuits, memory backup and buffering.

The T491D336K016AT7128 range of tantalum capacitors are multi-anode types with a tantalum cathode, making them suitable for a wide range of applications where high endurance and low ESR is desired. These caps have a high voltage rating of 16V and a capacitance value of 336K – meaning they are capable of providing heavy currents over long periods of time, making them ideal for applications such as power supplies, automotive electronics, and audio circuitry.

Working Principle

Tantalum capacitors are non-polarized and, unlike ceramic or aluminum capacitors, they do not suffer from changes in capacitance due to temperature. Instead, their capacitance is constant and is determined by the ratio of plate area to plate spacing. The stored electrical charge is stored on the inner tantalum plate and the outer dielectric material.

The key function performed by tantalum capacitors is filtering out high-frequency noise from DC power and signal sources. They achieve this filtering by acting as a “low-pass filter”: the lower the frequency, the higher the capacitance and the greater its potential for filtering out noise.

Other unique features of tantalum capacitors include the formation of an electrolyte layer between the anode and cathode, providing an improved capacitance-to-voltage ratio, as well as a self-protecting feature that eliminates short-circuit failures. This self-protection feature is due to their ability to absorb energy and then release it over time in a controlled fashion.

Conclusion

T491D336K016AT7128 is a specialized type of tantalum capacitor valued for its high capacitance-to-volume ratio, low ESR, and low self-inductance. It is suitable for a wide range of applications where high endurance and low ESR is desired, such as power supplies, automotive electronics, and audio circuitry. Tantalum capacitors achieve their high performance levels by acting as low-pass filters and their self-protecting feature eliminates short-circuit failures.