T491B225M020AT2478

T491B225M020AT2478 capacitors are tantalum capacitors made from tantalum oxide and manganese dioxide, held in an anodized aluminum shell. Typically, tantalum capacitors are polarized capacitors, due to the electrode configuration required for proper operation of the part. In the T491B225M020AT2478 capacitor, the anode is formed from the outer shell of the part, while the internal structure defines the cathode contact, and the dielectric between them is the tantalum oxide layer.

The tantalum oxide dielectric layer gives the part very high capacitance values in comparison to other capacitors. The capacitance values range from 1μF to 22μF, making them useful in many different applications. Additionally, the part has an operating temperature range of -55°C to 125°C, a DC Voltage Rating of 20V and a Leakage Current of 1μA, making it an ideal choice for temperature sensitive applications that require high capacitance in a small form factor.

The main application of T491B225M020AT2478 capacitors is for filtering and bypass of electrical signals in power management, switching power supplies, monitoring and measuring circuits and radio frequency components. The part\'s small profile allows for it to be used in instances where mounting space is limited. Its high performance also makes it a great choice for automotive, military and aerospace applications.

The basic working principle of the capacitor is based on a simple concept of storing electrical energy in an electric field. When a potential difference is applied across a capacitor, dielectric material in between the parallel conductive plates of the capacitor stores electric charge and the conductive plates acquire electric charge. The amount of the electrical energy stored in the capacitor is proportional to the capacitance of the capacitor, that is, the capacitor will store more energy for a higher capacitance.

A capacitor works by restoring electrical signals through a circuit, according to the amount of charge stored in the capacitor. The stored electric energy in the capacitor then gets discharged and restores the energy of the signal. Each capacitor has a certain rated capacitance, which means that the capacitor will be able to store a certain amount of energy. The higher the rated capacitance, the more energy the capacitor is capable of storing and the better it will perform in a given application.

Overall, T491B225M020AT2478 capacitors are reliable and efficient, making them ideal for a wide range of applications. The high capacitance and low leakage make them useful for power management and signal restoration, while their small profile and high performance make them an excellent choice for automotive, military and aerospace applications.