ECW-FD2J394J

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Introduction to Film Capacitors

Film capacitors are passive components used in many electronic devices. They provide a relatively large amount of electrical storage due to their low equivalent series resistance (ESR). They are often used to decouple or filter out electrical noise in power supplies or other circuits. Film capacitors are also used in high frequency circuits, DC-DC converters, and pulse power supplies for their superior frequency response, higher stability, and greater tolerance to temperature.

ECW-FD2J394J Application Field and Working Principle

The ECW-FD2J394J is a type of film capacitor from the ECW family. It is constructed from a polypropylene film dielectric, which provides excellent stability and low losses. It is designed for DC-link applications and has a voltage rating of 400 V. The capacitor has a non-inductive construction, which helps reduce in-rush current and reduces its ESR.

The ECW-FD2J394J has an operating temperature range of -40°C to 85°C and is available in metalized film construction. The metalized film construction offers excellent mechanical and electrical stability, making it ideal for use in power supplies and other applications with frequent voltage transients. The ECW-FD2J394J also offers high ripple current and voltage capabilities, as well as high dV/dt and di/dt.

The ECW-FD2J394J works by storing electrical charge on its dielectric material. It is designed to be used in applications where high ripple current and high dV/dt are needed. When the applied voltage reaches the rated voltage, the capacitor blocks the current from passing through. As the rate of voltage increase (dV/dt) increases, the charge stored on the capacitor begins to discharge through the application, reducing the ESR and providing the desired electrical noise filtering effect.

In addition to its excellent ripple current and high dV/dt capabilities, the ECW-FD2J394J also has a higher tolerance to temperature and humidity than other film capacitors. This makes it suitable for use in applications where environmental factors such as temperature, humidity, and vibration can significantly affect the performance of the device.

Conclusion

The ECW-FD2J394J is a moulded film capacitor suitable for DC-link applications. It is constructed with a polypropylene dielectric and features excellent mechanical and electrical stability, making it ideal for applications with frequent voltage transients. Additionally, the ECW-FD2J394J has a relatively high ripple current and dV/dt capability, making it suitable for use in noise-sensitive applications.

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