405QPC400KB8A5L

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Film Capacitors

Film capacitors are one of the most common types of capacitors in the market and are used in a wide variety of electronic circuits. The 405QPC400KB8A5L is a polypropylene film capacitor that is especially popular due to its higher capacitance, lower loss, and higher insulation resistance than other types. In this article, we\'ll discuss 405QPC400KB8A5L capacitor\'s application field and working principle.

Application Field

The 405QPC400KB8A5L polypropylene film capacitor is ideal for a range of applications, including:

• Coupling capacitors – The 405QPC400KB8A5L is often used as a coupling capacitor in AC applications, which can help to block the DC current but pass the AC current.
• Smoothing capacitors – The 405QPC400KB8A5L is used as a smoothing capacitor to reduce the ripple in the power supply.
• High-frequency application – The high insulation resistance and low loss characteristics of the 405QPC400KB8A5L makes it ideal for high-frequency applications, such as video circuits, radio-frequency (RF) circuits, etc.

Working Principle

The 405QPC400KB8A5L is made up of two metal plates (anode and cathode) separated by a film dielectric material. When a voltage is applied to the capacitor, an electric field is created between the two plates, allowing an electric charge to be stored. The amount of electric charge that can be stored on a capacitor is directly related to the capacitance of the capacitor. The 405QPC400KB8A5L has a capacitance of 400KB8A5L, meaning it can store a large amount of charge.

Film capacitors also have an insulation resistance, which is the measure of a material\'s resistance to electric currents. The 405QPC400KB8A5L has an insulation resistance of 500 megaohms (MΩ), making it highly resistant to electric currents. This is especially important for applications such as RF circuits, where a high insulation resistance is essential to preventing unwanted interference or noise from passing through the circuit.

The low loss (<0.1% at 1kHz) also makes the 405QPC400KB8A5L suitable for AC applications, as the little amount of energy lost is almost negligible.

Conclusion

The 405QPC400KB8A5L is a polypropylene film capacitor that is widely used for its versatile applications, higher capacitance, and low loss properties. With its 500 MΩ insulation resistance and low loss characteristics, the 405QPC400KB8A5L is especially ideal for high frequency applications, such as video circuits and RF circuits.

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