ST470-75T4KI

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Tantalum capacitors are a type of electrolytic capacitor, usually consisting of a pellet of tantalum metal as an anode, covered by an insulating oxide layer, surrounded by liquid or solid electrolyte as a cathode. One of the most common variants of this type of capacitor is the ST470-75T4KI, which is typically used in electronic circuits where reliable, long-term performance is needed. In this article, we will discuss the application fields and working principle of the ST470-75T4KI.

ST470-75T4KI capacitors are primarily used in industries requiring ultra-detailed designs with high reliability, such as in the aerospace, telecommunications, and medical industries. They can also be used in consumer electronics and automotive applications. The ST470-75T4KI is designed to operate at high voltage, up to 75 volts, and can handle a range of currents. Its relatively low ESR (Equivalent Series Resistance) of 6.3 ohms, provides stable performance in high-frequency applications and ensures negligible dielectric losses.

The construction of the ST470-75T4KI capacitor is similar to that of other tantalum capacitors. The ST470-75T4KI is constructed from a tantalum pellet, a winding of electrolytic material, and a protective film. The tantalum pellet acts as the anode, and the winding of electrolytic material forms the cathode. The protective film is a non-conducting insulating material that prevents the anode and cathode from coming into contact with each other. When an electrical current is applied to the capacitor, charge is stored in the dielectric material between the anode and cathode.

The working principle of the ST470-75T4KI capacitor is based on the Faraday\'s law of electrolysis. When a voltage is applied to the capacitor, electric current passes through the circuit, resulting in the movement of ions away from the cathode and towards the anode. This movement of ions creates an electric field between the electrodes that causes charge to build up on the capacitor. As more charge is added to the capacitor, the voltage across it increases and the capacitance of the capacitor decreases.

In addition, the capacitance of the ST470-75T4KI capacitor can be easily adjusted by changing the size and shape of the anode and cathode. This makes the capacitors ideal for applications where the required capacitance must be adjusted to meet the requirements of the circuit. For example, in systems requiring high-speed data transmission, the ST470-75T4KI can be used to reduce the time required for data transmission.

The ST470-75T4KI capacitor is suitable for use in many applications, including high-reliability circuits. Its low ESR and adjustable capacitance make it an ideal choice for applications where reliability and precision are required. Despite its relatively high cost, its low self-discharge rate and excellent performance make it an ideal choice for an array of industrial, consumer, and medical applications.

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