940C8W2K-F

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Introduction to Film Capacitors

Film capacitors, also known as plastic film capacitors, are a type of capacitor consisting of a plastic film as the dielectric, and metal or metallized electrodes on each side. These capacitors are usually of small and medium capacitance values, since they range in size from a few picofarads up to many thousand microfarads.

Application Field and Working Principle of 940C8W2K-F

The 940C8W2K-F is a film capacitor manufactured by Rubycon Corporation. It is specifically designed for use in DC power supplies, motor controls, and motor-related equipment, as well as for pulse circuits and audio systems. The 940C8W2K-F has a rated voltage of 450V and is available in 1,000 uF, 16V and 10,000 uF, 12V models.

The working principle of the 940C8W2K-F is based on the same principle as all film capacitors – the dielectric is a thin film made of a polymer material. The two metal or metallized electrodes are inserted into this film, with each electrode connected to one of the two conductors. When a voltage is applied to the capacitors electrodes, electrical charges will redistribute themselves on the surface of the dielectric, forming an electric field. This electric field creates an electrostatic field between the electrodes, which then stores electrical energy. This electrical energy is then discharged when the voltage across the electrodes decreases, allowing the 940C8W2K-F to function as an electrical energy storage device.

Advantages of Film Capacitors

Film capacitors have a number of benefits over other types of capacitors. Firstly, they have high insulation properties, which makes them resistant to temperature and humidity changes. Secondly, their construction offers high ripple current ratings and low ESR values. Thirdly, they have a wide power frequency range, allowing them to be used in a wide variety of AC and DC applications. Fourthly, their self-healing property helps to reduce the risk of dielectric breakdowns. Finally, they have low inductance characteristic, making them suitable for high-frequency applications with low insertion losses.

Conclusion

Film capacitors are widely used in a variety of applications such as DC power supplies, motor controls, and motor-related equipment, as well as pulse circuits and audio systems. The 940C8W2K-F is a film capacitor designed specifically for DC power supplies and motor-related equipment. It has a rated voltage of 450V and is available in 1,000 uF, 16V and 10,000 uF, 12V models. Film capacitors offer a number of advantages over other types of capacitors, such as high insulation properties, high ripple current ratings and low ESR values, wide power frequency range, self-healing property, and low inductance characteristic.

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