DPM4P33K-F

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Film Capacitors

Film capacitors are capacitors with a dielectric made from a thin film of plastic (polyester, polypropylene, etc). Film capacitors are used in a wide variety of applications including audio, power supply, decoupling, filtering, and timing. The specific capacitor type, DPM4P33K-F, is a high-voltage, high-energy device made with a four-layer polypropylene film dielectric. It is designed for use in extreme operating conditions, particularly power distribution applications.

DPM4P33K-F Application Fields and Working Principle

The DPM4P33K-F film capacitor is designed primarily for isolated high-voltage power supply applications such as power factor correction (PFC) circuits, smoothing circuits, switching power supplies, and isolated DC/DC converters. It is suitable for use in home appliances, industrial equipment, and consumer electronic devices. The capacitor is designed for use in extreme operating conditions, and it is capable of withstanding high voltage and heat for extended periods of time. It has a temperature-compensated linear current rating that varies with temperature, making it suitable for use in applications that require high-current operation and accurate monitoring.

The DPM4P33K-F film capacitor utilizes a four-layer polymer dielectric with an equivalent permittivity of 2.5. The four-layer dielectric structure provides increased capacitance and improved voltage endurance up to 450V. The capacitor also features enhanced electrical endurance, allowing it to handle up to 5,000 charge/discharge cycles. The capacitor’s optimized construction helps to reduce the size and cost of the power electronic application. The capacitor is rated for operation over a temperature range of -40°C to +125°C.

The working principle of the film capacitor is the same as any other capacitor. When a voltage is applied to the two electrodes of the capacitor, an electric field is created across its dielectric material, allowing electrons to travel from one electrode to the other. The movement of these electrons creates an electric charge on each electrode, resulting in a potential difference between them. The capacitor stores this electric charge until the voltage is removed. This stored energy can then be used for various applications.

The DPM4P33K-F film capacitor offers superior reliability and performance in applications that require high voltage and energy. Its four-layer construction provides increased capacitance, improved voltage endurance, and improved electrical and thermal properties, making it ideal for use in extreme applications. The capacitor\'s temperature-compensation feature helps to ensure accurate current ratings, making it suitable for applications that require high current operation and accurate monitoring.

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