QXK2E475JTP

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Film capacitors, also known as Polyester or Plastic Film Capacitors, are widely used as electronic components. The QXK2E475JTP is a type of film capacitor that is designed for use in professional audio and video applications, as well as in high-frequency fixed-frequency filtering circuits. It has high accuracy, low equivalent series resistance (ESR), and a wide temperature range. In this article, we will discuss the application field and working principle of the QXK2E475JTP.

The QXK2E475JTP is an oil-resistant, high-capacitance, high-voltage polyethylene film capacitor that has been designed for use in professional audio and video systems, such as film production, broadcast, and video editing. It can also be used in power conditioning circuits and filtration applications. Due to its excellent performance characteristics, it is frequently used in home theater systems and commercial audio systems. It can also be used in filtering applications in high-frequency systems such as radios, modems, and satellite receivers.

The QXK2E475JTP has a capacitance of 475pF (picoFarads) with a maximum rated voltage of 250Vdc. It has an operating temperature range of -40°C to +105°C and a stability factor of 2000 hours at +105°C. It also has a high dPCR (dC tolerance) rating of +15%.

Film capacitors are constructed with two thin layers of metal film separated by an insulating dielectric material. The metal film layers, typically aluminum or zinc, are deposited directly on the insulating film material to form the electrodes. The insulating dielectric material used in the QXK2E475JTP is polyethylene (PE) film. It is known for its excellent dielectric properties, including high dielectric strength and low dielectric losses. The PE film capacitor is also quite resistant to temperature extremes, moisture, and other environmental conditions.

The way a film capacitor operates can be best understood by looking at its equivalent circuit. This circuit consists of a series combination of a resistor, an inductor, and a capacitor. The resistance and inductance components both impact the performance of the capacitor, and can be kept low by using a PE film with a low dielectric dissipation factor or “DF.” The QXK2E475JTP has a DF of 0.002.

The capacitance of the QXK2E475JTP is determined by the thickness and area of the two metal films and the dielectric material that separates them. The thicker the materials, the higher the capacitance. The capacitance of the QXK2E475JTP also has a tolerance of ±5%

The dielectric breakdown strength of the QXK2E475JTP is rated at 250Vdc. This means that the voltage across the capacitor cannot exceed this level, or it will fail. Consequently, the QXK2E475JTP should not be used in circuits where the voltage exceeds this value.

The QXK2E475JTP also has a surge current rating of 1,000mA. This is the peak current that can be safely applied to the capacitor without causing damage. This rating should not be exceeded.

In conclusion, the QXK2E475JTP is a high-capacitance, high-voltage polyethylene film capacitor that is designed for use in professional audio and video applications, as well as in high-frequency fixed-frequency filtering circuits. It has a capacitance of 475pF, a maximum rated voltage of 250Vdc, an operating temperature range of -40°C to +105°C, and a stability factor of 2000 hours at +105°C. It has a high dPCR rating of +15%, and a surge current rating of 1,000mA. It is specified by its capacitance, voltage rating, and tolerance. Due to its excellent performance characteristics, the QXK2E475JTP is an ideal choice for use in film production, broadcast, and video editing applications.

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