SFT37T100K475B-F

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Film capacitors, also known as plastic film capacitors, refer to capacitors in which the dielectric medium is a plastic film (or multiple plastic films). Compared with other types of capacitors, the film capacitor has good stability, and its temperature coefficient is small and can be used in high temperature and humidity environment. One of the most widely used film capacitors is SFT37T100K475B-F, which belongs to the SFT series of small transistors.

Application Field of SFT37T100K475B-F

SFT37T100K475B-F is widely used in medical and aerospace devices, as well as in audio and video equipment such as TV, computer sound cards, and DVD players. Its small size, high reliability, high capacitance value, wide operating temperature range, low impedance, and high insulation resistance are more beneficial to these applications. It is also common in televisions, tape recorders, sound equipment, satellite receivers, computers, audio amplifiers, automotive audio systems, and digital and mobile communication products.

Working Principle of SFT37T100K475B-F

The working principle of film capacitor is basically the same as an ordinary capacitor. It uses two layers of metal film covered with two layers of plastic, separated by a certain gap, and then sealed and fixed in the container. When connected to the power supply, the metal film can transfer some of the electronic lines to the other side, and form an electric field that corresponds to the positive and negative poles. This electric field allows current to pass through, and when the voltage across the capacitor is changed, the electric field and current changes correspondingly. In other words, when the power is cut off, the electric field disappears, and the capacitor will discharge.

Conclusion

In short, SFT37T100K475B-F film capacitor is a specialized type of film capacitor used in many applications, and its small size and high reliability make it popular for use in a variety of devices, including medical and aerospace devices, TV, computer sound cards, and audio and video equipment. The working principle is the same as common capacitors, in which the electric field is generated by two layers of metal film and separated by a plastic layer, and this electric field allows current to pass through.

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