BFC2370GH242

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Film capacitors or class X2 or “safe for 2 X” capacitors are a type of AC line-bypass or surge-protective capacitor designed for connection within the Longwell AC mains circuit. Film capacitors were developed as a better alternative to electrolytic capacitors. They use a thin film of dielectric material, usually polyester plastic, which is coated on both sides with metalized foil. The metalized foils create two separate electrical contacts, while the plastic film forms the dielectric between them.

BFC2370GH242 is a film capacitor series developed specifically for power supply and lighting systems. This series of capacitors has a large capacitance range (from 3.3 to 200 µF) and a low ESR (Equivalent Series Resistance), making them more reliable in high-current, high-voltage applications. In addition, this series has a wide temperature range. It has a maximum operating temperature range of -20°C to +85°C.

Because film capacitors are non-polarized they are much better suited for transient voltage applications. They can also be used in EMI/RFI filters on power supplies, providing a low-profile and cost-effective solution to interference in the power line. They can also be used in motor run applications, where their low ESR values ensure more consistent current flow.

The working principle of a film capacitor is similar to a standard capacitor. It consists of two conductive plates that are separated by a dielectric layer. When an AC voltage is applied to the capacitor, the plates store electrical energy in the form of charge. The dielectric material between the plates acts to reduce the capacitance, thus increasing the reactance of the capacitor. This combination of capacitance and reactance allows the capacitor to maintain a steady voltage level.

Film capacitors are becoming increasingly popular due to their wide array of applications and their reliable performance. They provide highly accurate and consistent voltage levels, making them perfect for use in medical, industrial, and commercial applications. While they may cost more than electrolytic capacitors, they are much more reliable and offer superior performance in a variety of uses, making them well worth the cost.

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