B32922C3274M000

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Film Capacitors

Film capacitors are used to store potential energy in an electric field. Capacitors of varying shapes and sizes are used in electrical and electronics applications, and any type of capacitor may be referred to as a film capacitor. Film capacitors are constructed by winding two pieces of dielectric material -- typically a thin plastic film -- into rolls and stacking them inbetween two electrodes.

B32922C3274M000 is an aluminium electrolytic capacitor which is a type of film capacitor specifically designed for high currents . It has a long operation range of -40 to +105 deg C, and a working voltage of 275VAC. It has a maximum ripple current of 35uA and a miniaturisation/unchanged characteristic.

Application Field of B32922C3274M000

The primary application of the B32922C3274M000 capacitor is for the smoothing of ripple current in higher voltage supplies, such as those found in computer power supplies, AC motor control applications, inverters and static AC or DC DC converters. They are also common in electronic lighting, off-line power converters, variacs, converters and AC-DC power supplies.

Working Principle of B32922C3274M000

The working principle of the B32922C3274M000 is based on the same principle as a non-electrolytic capacitor, where two metal plates are separated by a dielectric material. The dielectric material in this case is an aluminium oxide (Al₂O₃) layer which acts as the insulator between the two metal plates, while simultaneously creating a small capacitance between them. This capacitance prevents high frequency signals from passing through, while allowing the DC signals to pass.

When an AC voltage is applied to the capacitor, the AC voltage is broken down into its fundamental components: DC, and different harmonics (frequencies). The capacitor is designed to stop the high frequency harmonics from passing, therefore smoothing the AC voltage.

The capacitor is also designed to continuously charge and discharge as the AC voltage changes. As current flows through the capacitor, the capacitance between the electrodes decreases, and the voltage across the capacitor decreases. In this way, the capacitor filters out the higher harmonics of the AC voltage and provides a much smoother DC output.

B32922C3274M000 also features a unique miniaturizing/unchanged characteristic. With this feature, the capacitor is able to maintain its capacitance while sustaining higher voltages, creating unusually small capacitors that are able to be used in high voltage systems yet still maintain their original capacitance.

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