T491A105K016AT4280

Tantalum Capacitors

T491A105K016AT4280 is a type of tantalum capacitors. Tantalum capacitors are types of polarised electrolytic capacitors which use tantalum as their anode material. They provide capacitance values equal to that of ceramic types in a much smaller physical package. These components are typically used in portable consumer electronics, medical applications, and laptops.

Application Field

The T491A105K016AT4280 is a miniature, axial-leaded, water-clear tantalum capacitor. This particular type of capacitor has a range of uses, most fractional representation of the capacitance in the range 10-330nF inclusive and a voltage rating of 16V-42V.

These types of capacitors are most commonly used for bypassing, coupling and filtering tasks in electronic circuits. They also find applications as audio / telecommunication, computing, digital and information processing equipment capacitors, and are also used as timing elements in applications such as clocks and timers.

They may also be used in automotive systems applications and in miniature chemical sensors in medicine and biotechnology. Furthermore, tantalum capacitors are suitable for voltage stabilisation, due to the low electrical equivalent series resistance (ESR) when compared to other types of capacitors.

Working Principle

The principle of operation of Tantalum capacitors is based on that of conventional electrolytic capacitors, with an anode plate made of tantalum, an anode electrolyte and a cathode plate. The anode plate is etched to provide a very large surface area, which increases the capacitance.

On connecting the capacitor to a battery, an electric current flows into the anode and the current electrolyses the anode electrolyte, forming an electrolytic gel with an electrochemical depletion layer. This layer is known as the dielectric.

When the capacitor is subjected to a voltage, the dielectric experiences a strain, thereby reducing its resistance and allowing current to flow through it. This current is blocked by the cathode plate and thus a capacitor is formed. In many industrial and consumer applications, these types of capacitors are used for sensing the component\'s changes in the electric field.

Conclusion

The T491A105K016AT4280 is a type of Tantalum capacitor which is especially useful due to its high capacitance and relatively small size. Its application field is varied and its principle of operation is based on that of conventional electrolytic capacitors.