SFT37S90K391B

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Film capacitors are electronic components that play an important role in energy storage applications. They are used in a variety of industries, from automotive and military to industrial and consumer-electronics. Film capacitors are made of plasticized polyester, polypropylene, vinyl and other materials such as paper.

SFT37S90K391B is a special type of film capacitor specifically designed for use in electrical power applications, especially in medium-to-high voltage systems. It has a wide operating temperature range from -55°C to 85°C, making it very suitable for extreme environmental temperatures. The SFT37S90K391B is also highly resistant to vibration and stress. It has an insulation resistance rating of 1 x 10^11 megohms (at 2000 VDC) and a dielectric strength of 2800VAC.

The SFT37S90K391B has a number of applications in electrical power applications, especially in medium-to-high voltage systems. It is especially suitable for use in voltage regulators, switchgear, power supplies and motor control systems. It is also suitable for use in applications where high capacitance is required, such as motor drive systems, power factor correction systems, UPS systems and energy storage systems.

The working principle of the SFT37S90K391B is quite simple. It is essentially a two-terminal device consisting of two metal layers, a dielectric layer and a ground plate, all separated by the dielectric material. The two conducting layers are connected to two electrical nodes, and the two nodes are then connected to a circuit. When a voltage is applied to the circuit, it creates a potential difference - the electrical current - between the two nodes.

This potential difference causes the electrons to flow between the two nodes, through the dielectric layer, and eventually to the grounding plate. This process creates a capacitive charge, which is then stored in the capacitor. The charge is released when the voltage is removed from the circuit. This is the basic working principle of the SFT37S90K391B and all film capacitors.

In summary, the SFT37S90K391B is a special type of film capacitor designed for electrical power applications, offering a wide operating temperature range, high resistance to vibration and stress, and high capacitance. Its applications include voltage regulators, switchgear, power supplies, motor control systems, motor drive systems, power factor correction systems, UPS systems and energy storage systems. It works by creating a capacitive charge when a voltage is applied to a circuit, and this charge is then released when the voltage is removed.

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