T491A475K020AT Capacitors

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T491A475K020AT is a tantalum capacitor manufactured by KEMET Electronics Corporation. It is part of the company’s T491 series of capacitors, which are specifically designed for low voltage, high current applications.

A tantalum capacitor is a type of electrolytic capacitor that is made up of two layers of tantalum metal separated by an electrolyte. The anode layer is the conductive layer that is connected to the positive terminal of the device and the cathode layer is the non-conductive layer that is connected to the negative terminal of the device. The electrolyte acts as an insulator between the two layers, and this insulating layer also has the effect of storing a charge and increasing the capacitance of the device. When a voltage is applied across the capacitor, a charge is stored on the electrical insulating layer of the device and the capacitance increases.

T491A475K020AT is a high voltage, high current tantalum capacitor designed for applications where small footprints, high current ratings, and long-term reliability are paramount. The capacitance of T491A475K020AT is 20 µF, which is relatively low for a tantalum capacitor. The operating temperature range of this device is - 55 °C to + 125 °C, making it suitable for a range of applications in various temperatures including automotive and industrial environments. Its rated voltage is 10 V DC, and its maximum working voltage is 50 V DC.

T491A475K020AT is suitable for use in a wide range of applications such as power supplies, motor controllers, instrumentation, and other industrial electrical and electronic equipment. The device can be used in conjunction with other components such as resistors, ICs, and transistors to create an efficient and reliable electrical system. Additionally, the device is capable of withstanding high frequencies, enabling it to be used in high frequency applications such as RF oscillators.

The working principle of T491A475K020AT is relatively simple. When a voltage is applied to the device, the anode layer of the device acts as an electron reservoir which stores a charge. This charge is then used to create a current that passes through the device, allowing the capacitor to deliver a voltage to the connected device. The amount of charge that is stored on the capacitor at any given time is determined by the amount of electric current that is applied to the device. As the current is increased, more charge is stored, resulting in an increase in the capacitance of the device.

In summary, T491A475K020AT is a high voltage, high current tantalum capacitor designed for low voltage and high current applications such as power supplies, motor controllers, instrumentation, and other industrial electrical and electronic equipment. The device is capable of withstanding high frequencies, and the capacitance of the device increases as the electric current is increased. This makes it a versatile and reliable component for a range of applications in various temperature environments.

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