QXK2E225JTP7FT

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Film Capacitors

Film capacitors, also known as plastic film capacitors, are passive electronic components consisting of two conductors separated by a thin insulating film. They are widely used in a variety of industrial applications, including power supplies, converters, amplifiers, and high-frequency circuits. In this article, we will discuss the application field and working principle of the QXK2E225JTP7FT film capacitor.

The QXK2E225JTP7FT film capacitor from Marzano is a multi-layer aluminium foil capacitor designed for high-frequency applications. It has a rated capacitance of 225pF and a rated voltage of 12kV. It is manufactured with a high-precision multi-layer technology and has excellent heat resistance, low self-inductance, and low dielectric absorption. Its properties make it perfect for use in high-frequency circuits, such as radio frequency transmitters and receivers, LCD television displays, telecom equipment, computers and other digital equipment.

Film capacitors, including the QXK2E225JTP7FT, work by replenishing electric charge in a circuit. This can be explained using the current–voltage curves, which show how the terminal voltage of a capacitor changes as a function of the current or charge flowing through it. As the capacitor is connected to a power source, charge is deposited on its conductors until the voltage across the capacitor reaches the power source voltage. The charge stored in the capacitor increases as the current passes through it.

When a capacitor is connected to a circuit, it can act as a power source itself, supplying charge to the circuit. The voltage across the capacitor slowly decreases as the current passes through it, and the rate of decrease depends on the external load on the circuit. This process continues until the voltage across the capacitor reaches zero, which occurs when all the charge stored in it is completely depleted. The energy stored in a capacitor is proportional to the capacitance, and therefore, increasing the capacitance of the capacitor increases its charge storage capacity and its ability to act as an energy source.

In addition to providing power to a circuit, capacitors can also be used for noise filtering. Capacitors can act as a kind of “noise absorber”, as the capacitor\'s terminal voltage blurs the alternating current (AC) noise from the power source and reduces the effect of the noise on the circuit. Furthermore, due to their ability to block DC electric current, capacitors can be used as coupling capacitors in audio circuits to prevent DC bias from passing through the circuit.

Capacitors are also used as part of an energy storage system because of their ability to store and release energy. When used in this manner, capacitors can function as a buffer between the power source and the load, allowing the power source to be shut off and the load to remain powered. As the system is powered down, the charge stored in the capacitors is slowly depleted and a steady signal is maintained for a certain amount of time.

The QXK2E225JTP7FT film capacitor from Marzano is an ideal choice for high-frequency applications, providing excellent heat resistance, low self-inductance, and low dielectric absorption. In addition, its high capacitance and low voltage make it perfect for use in noise-filtering, energy storage, and power-supplying applications.

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