947D421K901BDMSN

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Film Capacitors

Film capacitors are used in a variety of specialized industrial, military, medical and commercial applications and are manufactured using a variety of film or plastic materials. Film capacitor technologies have been developed over many decades and are now a mature technology. The most commonly used film capacitors in the industry are 947D421K901BDMSN capacitors.

Application Field

947D421K901BDMSN capacitors have a wide range of applications, including energy storage, snubbing, filtering, timing and circuit protection. The dielectric material used in these film capacitors are a tape-wound and impregnated construction, with non-inductive characteristics, and the construction consists of special electrolyte forms within laminated, low film layers. Typically, these capacitors provide high capacitance values and low leakage, with a high stability performance level. Due to their excellent electrical characteristics, these capacitors are also widely used in switch-mode, high-voltage power transformers and filtration circuits.

Working principle

The working principle of 947D421K901BDMSN capacitors is similar to other film capacitors, with the film material being used as the dielectric medium. When a voltage is applied, the electrical energy is stored in the form of a field between the conductive layers of the capacitor. This electric field increases with the applied voltage, and a certain amount of energy is stored in the form of an AC current and a residual charge. Due to their high dielectric strength, these capacitors are highly resistant to voltage and current stresses, making them ideal for use in power electronic applications.

When a current passes through, the charge is stored and slowly discharged until the capacitor reaches the steady state condition. The film also acts as an insulating medium, reducing the electrical losses and offering a low ESR (equivalent series resistance) and excellent high-frequency characteristics. All these features make 947D421K901BDMSN capacitors an ideal choice for a variety of high-capacity and high-frequency applications.

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