685MWR250K

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Film Capacitors

Film capacitors, also known as plastic film capacitors, are generally non-polarized electrolytic or ceramic capacitor which uses a plastic film as the dielectric. They are typically composed of two or more layers of metal electrodes separated by a thin insulating film. Because the dielectric films can provide higher dielectric strength, capacitance stability, and frequency response than the commonly used paper, mica, and ceramic dielectrics, film capacitors are widely used in various circuits.

685MWR250K Application Field

The 685MWR250K is a film capacitor suitable for high-voltage operation, frequency response and energy storage applications offering stable performance and reliability. The 685MWR250K is a non-inductive, radial leaded capacitor with a rated voltage of 250kV (DC). Its capacity varies from 4 to 40,000µF (microfarad), depending on the specific series.

The 685MWR250K capacitors are ideal for applications like medical imaging, ultrasound and linear accelerators requiring high voltage, frequency response, and energy storage. It is also suitable for inverter circuits, frequency converters, and power supplies used in industrial automation and lighting.

685MWR250K Working Principle

The 685MWR250K capacitor operates using dielectric film as the medium for electrical insulation. The electrons from each electrode will be stored on the dielectric film, forming a capacitor. The dielectric film used for the 685MWR250K is made of high-grade polyester and is laser-etched at a thickness of 50μm for higher precision and improved performance.

When a voltage is applied across the electrodes, the electrons in the capacitor will migrate from the negative electrode to the positive electrode. This forms the electric field which is a measure of the amount of electric charge stored in the capacitor at any given time. The electric field created is proportional to the magnitude of the voltage applied. The electric field strength is also affected by other factors such as temperature and frequency.

The 685MWR250K is designed to maintain excellent performance in high-voltage and frequency applications under extreme environmental conditions. It is highly reliable and offers optimum performance, high breakdown strength, low losses, and excellent surge endurance. With its superior design and performance, the 685MWR250K can provide many years of reliable operation.

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