QYX1H683JTP1FD

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The film capacitors, also known as the plastic film capacitors, typically have three digit codes assigned to them, such as QYX1H683JTP1FD. The codes denote their application area and the working principle. The first two digits refer to the category of film capacitors, in this case, QYX stands for metallized plastic film capacitors. The following digit indicates the environmental standard which the capacitor complies with, and in this case, it is 1H, signifying that the capacitor is compliant with industrial standard EIA-198-F, indicating working temperature range greater than -40C and up to +105C.

The next three digits refer to the nominal capacitance of the device in picofarads or nanofarads. In this case, 683 indicates that it is a 6.83 nanofarad capacitor. The final two digits denote the operating voltage of the device. In this case, TP stands for the voltage of 400 Volts. Altogether, the code QYX1H683JTP1FD denotes what is known as a metallized polypropylene film capacitor with a capacitance of 6.83 nanofarads and operating voltage of 400V.

METALLIZED PLASTIC FILM CAPACITOR is a type of film capacitor. The film is impregnated with various types of resins, such as polyester or polypropylene. Then, a thin layer of metal (such as aluminum) is evaporated onto the film. This creates a number of tiny capacitors that are connected in parallel to each other, increasing the capacitance and making it ideal for high voltage applications. Metallized plastic film capacitors are used in applications such as DC-DC converters, filtering, and energy recovery circuits, as well as any other application which needs a high-density capacitor.

The working principle of a metallized plastic film capacitor is simple. The capacitor consists of two metal electrodes, separated by an insulating material, usually a polypropylene dielectric. The electric field between the electrodes results in an electric charge separation. When an alternating current is applied, a current flows and the capacitor charges and discharges. The capacitance of a metallized plastic film capacitor is determined by its geometry and the relative permittivity (dielectric constant) of the insulating material.

In summary, the code QYX1H683JTP1FD denotes a metallized plastic film capacitor with a capacitance of 6.83 nanofarads and operating voltage of 400V. It is used in applications such as DC-DC converters and energy recovery circuits, and it works by creating an electric field between two metal electrodes, separated by an insulating material.

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