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Film Capacitors

Film capacitors, also known as PTFE capacitors, are capacitors whose electrodes are metallic film and non-metallic film. It is mainly used for frequency compensation, harmonic filtering, time delay, energy storage, impulsive energy storage, etc. Film capacitors can handle higher working voltage and temperature than other capacitors, so they can work 2-3 times longer compared to other capacitors.

QXK2E473JTPTZH application field and working principle

The QXK2E473JTPTZH is a type of film capacitor designed with high frequency and high capacitance. It is mainly used in DC/AC inverter equipment, high-frequency circuit, high-frequency welding machine, high-frequency motor control, and high-voltage motor control. This type of film capacitor is mainly composed of metallized film, PTFE insulation layer, aluminum shell, etc.

The working principle of this type of film capacitor is based on the fact that when the aluminum shell is filled with PTFE insulation oil, the two electrodes on the metallize film are subject to an equivalent series resistance, thus forming an arrangement for resonance, so that the capacitance value changes with the change of frequency. With the contact between the aluminum shell and the lead wire of the capacitor, the connection of the capacitor can be achieved. At the same time, the constructed capacitor can introduce a certain amount of noise inductance into the system, so as to prevent the impact of phantom current on the device.

The structure of this type of film capacitor is relatively compact, which is beneficial to their production and installation. Additionally, due to the high dielectric strength, burst resistance and tolerance of temperature, this type of capacitor is more reliable in long term operation. It also has strong anti-interference and anti-humidity, and is resistant to chemical action of various kinds of high frequency oil.

Conclusion

Film capacitors, such as the QXK2E473JTPTZH, are becoming increasingly popular in various industries due to their ability to withstand high temperature, high voltage, and high frequency. With its strong anti-interference and anti-humidity, thus it is an ideal choice for any applications involving DC/AC inverter equipment, high-frequency circuit, high-frequency welding machine, high-frequency motor control, and high-voltage motor control.

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