ECW-F2685JAQ

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Introduction to Film Capacitors and ECW-F2685JAQ Application

Film capacitors are capacitors made with thin dielectric films such as polypropylene, polycarbonate, polyester, and other dielectric polymer films. Film capacitors are used in a wide variety of applications due to their superior electrical properties, which include high stability, high reliability, low equivalent series resistance (ESR), and high insulation resistance, among other attributes. Film capacitors have a wide range of applications, from audio equipment to medical devices, and from power electronics to telecommunication systems.

The ECW-F2685JAQ is a film capacitor specifically designed for high frequency, high ripple and high voltage applications such as AC motors, AC adapters and LEDs. This capacitor is a polypropylene-based film capacitor featuring a glass tube internal construction. It offers high volumetric efficiency and excellent electrical performance. As such, it is well-suited for use in motor drives, high power supplies, servo motors, switching power supplies, inverters and other DC-DC converters.

Working Principle of Film Capacitors

Film capacitors, or film foil capacitors, are composed of thin dielectric films sandwiched between two layers of metal film electrodes. The electrodes provide the charge carriers for the electric field inside the device. As the electrodes are made of metal, they are generally connected together and electrically shielded. The outer shield provides stopping power to reduce surface current leakage. The physical structure of the capacitor creates an electric field in which electric charges are stored and stored energy is released when needed.

The electrical and physical structure of the film capacitor allowed the manufacturing of capacitors able to handle up to 6-8 KV with a capacitance range from 0.01μF to over 9.99μF. High voltage film capacitors are made with layers of film with specific inner structures that provide breakdown voltages that go as high as 8KV. These layers are also equipped with PTFE layers that provide insulation for the metal electrodes, protecting them from high electric fields.

Transient Response of Film Capacitors

In high frequency applications, film capacitors also possess superior transient response, e.g., they respond faster to a step stimulus applied to the circuit. This is mainly due to the low self-inductance of the film capacitor. As the storing of energy in the film capacitor occurs very quickly, the energy supply from the capacitor is also very fast. The capacitors are also able to maintain their charge for longer periods of time, which allows for good stability and repeatability of operation.

Performance of ECW-F2685JAQ

The ECW-F2685JAQ is an excellent choice for a host of AC motor, AC adapter, LED and other high frequency, high ripple and high voltage applications. This capacitor is a polypropylene-based film capacitor featuring a glass tube internal construction. Its features include:

• High volumetric efficiency
• Low equivalent series resistance
• High voltage transients capability
• High insulation resistance
• High frequency operation up to 1 MHz
• Excellent mechanical properties
• Excellent reliability

The capacitance range for this capacitor is 0.1 μF to 15 μF and the operating temperature range is -40ºC to 85ºC. The operating voltage is 500 Vrms (1000 Vrms max) The mounting type is radial. The ECW-F2685JAQ is UL recognized and RoHS compliant.

Conclusion

The ECW-F2685JAQ is a highly specialized film capacitor designed to handle high frequency, high ripple and high voltage applications such as AC motors, AC adapters and LEDs. It offers superior electrical performance, with low ESR, high insulation resistance, high-frequency operation up to 1MHz and good mechanical properties. Its wide capacitance range, UL recognized and RoHS compliant makes the ECW-F2685JAQ a reliable choice for a variety of applications.

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