F1778333K2FLB0

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Film Capacitors

F1778333K2FLB0 is a kind of film capacitor manufactured by EPCOS. It is mainly used in AC circuits, with a voltage derating of 2.5% per 1000ft at 2.7 kHz, or about 3V per 1000ft. It has a temperature coefficient of 0.5%/°C and a frequency range of up to 100 kHz. This capacitor is also capable of withstanding high voltages.

Application Field

F1778333K2FLB0 is typically used in AC applications that require a low self-inductance, low impedance, and good surge current protection. It is mainly used as a motor running capacitor in automotive, motor controllers, power supplies, solar inverters, and PFC (Power Factor Correction) applications. It can also be used for other applications such as audio power supplies, high current filters, and snubber circuits. This capacitor is also very useful for current limiting circuit designs.

Working Principle

A film capacitor is generally constructed of two conducting surfaces isolated by a dielectric material. Typically, the two conducting surfaces are formed from coils of metal film, typically copper or aluminum. The dielectric material used can be plastic film, paper, etc. When a voltage is applied across the conducting surfaces, an electric field is created, which generates an attractive force between the two conducting surfaces, thus allowing the capacitor to store energy or electrons in this electric field.

The amount of energy stored depends on the capacitance of the capacitor, which is a function of the dielectric material used. The larger the dielectric constant of the dielectric material, the higher the capacitance and thus the greater the energy stored in the electric field. In addition, the size of the capacitor also affects the energy storage capacity. The larger the capacitor, the more the energy it can store.

F1778333K2FLB0 is a film capacitor with a low ESR (Equivalent Series Resistance) and a high temperature coefficient. It is very useful in high-current AC applications as it can safely handle high transient voltage peaks and provide good surge current protection. It is a cost-effective solution for many applications, including motor running capacitor and PFC.

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