T491B105K025AT2478

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Tantalum capacitors are widely used in a variety of electronic equipments and systems. The T491B105K025AT2478 is one of the many types of tantalum capacitors. This particular capacitor is an axial-lead, snap-in type capacitor. As an axial-lead type, it is made with two parallel leads, one of which is inserted into the metal end cap and the other is connected with electrical components by soldering. The metal end cap acts as a shield, protecting the capacitors from the mechanical force, chemical corrosion and electric stability.

The T491B105K025AT2478 capacitor consists of a tantalum core, upper and lower electrodes, a dielectric, and a rating of 25V. The inner structure of a capacitor primarily consists of two electrodes. The dielectric is a special material which acts as an insulator and regulates the flow of electricity. In a tantalum capacitor, the dielectric is tantalum pentoxide. The upper and lower electrodes are made of an electrolytic alloy, usually aluminum or silver.

The principle of operation of the T491B105K025AT2478 lies in the fact that when a positive voltage is applied to the positive side of the capacitor, an electric field is created, which stores charges in the form of electrical energy and the resistance of the capacitor decreases. Conversely, when a negative voltage is applied to the negative side of the capacitor, the charges are released and the resistance of the capacitor increases. This way, the capacitor can store electrical current and prevent it from flowing back.

Due to its small size, low cost, and high capacitance, the T491B105K025AT2478 capacitor is commonly used in a variety of applications, such as filter circuits, signal filter circuits, switching power supplies, and motor control circuits. In addition, because of its additional features such as high frequency, low noise, AC ripple current, and high ripple current, the T491B105K025AT2478 is also often used in mobile phones, computers, and other electronic devices.

In conclusion, the T491B105K025AT2478 is an axial-lead tantalum capacitor that has a rated value of 25V, with a low cost, high capacitance and high frequency, making it suitable for a variety of applications. It works by the principle of storing and releasing electrical energy, helping to regulate the flow of electricity. Therefore, it is an important part of many electronic systems and equipments.

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