21FD3707A-F

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Film capacitors play a major role in a variety of applications. They are used as filters, energy storage devices, snubbers, spike suppression, and more. As such, their performance and reliability are paramount to the successful operation of any system they are incorporated in. The 21FD3707A-F from Panasonic is a particularly capable film capacitor that was especially designed for automotive applications.

The 21FD3707A-F is an Axial Polypropylene Film Capacitor designed to provide excellent performance and reliability in temperature ranges from -40°C to +125°C, and in a variety of environmental conditions. It is available in five different capacitance values: 0.47µF, 2.2µF, 4.7µF, 10µF, and 22µF. It is rated at 25 Volts DC, and has a maximum ripple current of 0.2 A. These capacitors use an oil-impregnated polypropylene dielectric film to ensure long-term stability and reliability.

The 21FD3707A-F can be used in a variety of automotive applications, including powertrain and chassis systems, electronic control units, airbags, and ABS. It can also be used in off-road, agricultural, and ATV applications. Its axial package makes installation in tight spaces an easy task.

The construction of the Panasonic 21FD3707A-F is based on an Axial Polypropylene Film Capacitor structure, which is the same found in most other film capacitors. This type of construction uses two metallized electrodes which are placed in opposite directions and supported by insulating layers. These electrodes are then encapsulated in a polypropylene dielectric film which provides electrical insulation and acts as a dielectric material. The entire assembly is then encapsulated in a hermetically sealed metal casing. This sealed casing protects the capacitors from external influences and prevents leakage of current.

The working principle behind the Panasonic 21FD3707A-F is the same as any other film capacitor. When a DC voltage is applied, the two metallized electrodes build up electric potential and attract each other. This creates an electric field that exerts a force on free electrons that pass through the dielectric material. This electric field causes some of the electrons to remain between the two metallized surfaces, creating a capacitance. The electrical energy stored in this capacitance is determined by the voltage applied and the size of the capacitance.

The Panasonic 21FD3707A-F is a reliable and robust film capacitor that can withstand harsh environmental conditions. Its axial package makes it easy to install in limited spaces and its wide range of capacitance values makes it suitable for a variety of automotive applications. The unique construction of the capacitor ensures that it provides stable performance and long lasting reliability.

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