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Feed Through Capacitors

Feed through capacitors are a type of capacitor that is used to couple signals from a source to a load. These capacitors are also known as coupling or blocking capacitors and are commonly used in radio, audio and video applications. The W3F45C4718AT1A is a feed through capacitor developed by KEMET. This application note discusses the application field and working principle of the W3F45C4718AT1A.

Application Field

The W3F45C4718AT1A is a high voltage feed through capacitor with a dielectric strength of 450V DC working voltage. It is suitable for use in power electronics applications, such as inverters, DC-DC converters, AC-DC converters and high-power motor drives. It is also suitable for use in harsh environments, such as high temperatures and high vibration environments. The capacitor is also suitable for use in automotive and aerospace applications.

Working Principle

The W3F45C4718AT1A is a 3-terminal, non-polar, feed through capacitor. The W3F45C4718AT1A is designed to couple high-frequency signals from a source to a load. Its operation is based on the capacitive reactance that is formed between its terminals when a voltage is applied across them. The capacitor’s dielectric material ensures that the capacitance remains stable over a wide frequency range and over a wide temperature range. The dielectric material also enhances the capacitor’s insulation strength. The resulting capacitance is independent of the voltage applied to the capacitor and is therefore suitable for high-voltage applications.

The W3F45C4718AT1A capacitor can be used in a number of applications. It can be used for filtering purposes, for coupling RF signals from a source to a load, or for blocking DC currents while allowing AC signals to pass through. The capacitor can also be used in the resonator circuits of inverters, DC-DC converters and AC-DC converters. The capacitor can also be used in circuits that require high-frequency isolation, such as audio or video circuits.

Conclusion

The W3F45C4718AT1A capacitor is a high voltage feed through capacitor developed by KEMET. It is suitable for use in power electronics applications, such as inverters, DC-DC converters, AC-DC converters and high-power motor drives. It is also suitable for use in automotive and aerospace applications. The capacitor can also be used for filtering purposes, for coupling RF signals from a source to a load, or for blocking DC currents while allowing AC signals to pass through.

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