SFT66S20K391B-F

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Film capacitors are widely adopted in a variety of electronic products today, owing to their unique functions in everyday applications. The SFT66S20K391B-F is a Film Capacitor developed by the company Guangdong SFT Capacitor Co., Ltd. Capable of providing the user with dependable performance and reliability, this capacitor series is suitable for a variety of usage scenarios. Taking a closer look at the SFT66S20K391B-F, here’s its application field and working principle.

Application Fields

The SFT66S20K391B-F had a substantial voltage resistance of up to 5000VAC (maximum) and is highly dependable in its performance across selected scenarios. This makes it suitable for high-purity audio applications, such as condenser microphones, condenser audio cards, instrument amplifiers, and studio microphones. It is also applicable in various professional audio, such as musical instrument amplifiers, music synthesizers, and ultra-low frequency seismic and computer seismic information analysis systems.

Apart from audio applications, the SFT66S20K391B-F is also suited for high current applications as the use of low-loss materials helps to provide superior current performance even in high frequencies and low temperatures. Its use can be seen in power supplies for TVs and PCs, commercial LED lightning products, and switch power supplies.In addition, it can be used in the inverter motor drive, household appliances, stage audio amplifiers, power switching amplifiers, and radio frequency power amplifiers.

Working Principle

The working principle of the SFT66S20K391B-F lies in its solid dielectrics. It is mainly composed of two electrodes - a vanadium pentoxide film and tin-plated copper electrodes. The use of these materials accounts for the superior insulation properties, such as large capacitance values and high electrical characteristics.

In a nutshell, the SFT66S20K391B-F capacitors are reliable in that their design allows for high current applications, as well as improved electric field characteristics over conventional film capacitors. The fact that it is highly reliable and suitable for a wide range of audio applications makes it one of the best products in its class.

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