ECQ-U2A394MLA

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Film capacitors, based on their technology of production, are divided into two primary types: polyester and polypropylene. In the manufacture of film capacitors, an insulating film made of polyethylene terephthalate (PET) or polypropylene (PP) is coated with metal electrodes to construct the capacitor. Each material has its own pros and cons, and this material difference determines the different application field and working mechanism of the film capacitor.

ECQ-U2A394MLA application field and working principle

ECQ-U2A394MLA, produced by Panasonic, is a type of Metallized Polyester Film Capacitor. Its application field and working principle can be divided into two aspects: temperature and capacitance.

Temperature

One of the significant features of the ECQ-U2A394MLA capacitor is its temperature range. It is a temperature-compensated capacitor, which enables it to remain stable over a wide temperature range, from -55°C to +105°C. This feature makes it suitable for a wide variety of application scenarios, from automotive, industrial, and aerospace applications, to medical applications. The working process of the capacitor is relatively simple: when the temperature rises, the capacitance of the film capacitor\'s insulation increases; when the temperature drops, the capacitance decreases.

Capacitance

The main feature of the ECQ-U2A394MLA is its high capacitance. It has a maximum value of 394 µF. This value is reached at 20°C and a frequency of 1 kHz. At high frequencies, the value may decrease. In addition, the capacitor has a very low equivalent series resistance (ESR). This feature increases the capacitor’s efficiency and reduces the risk of failure due to heat generated by the capacitor.

The working principle of a film capacitor is based on the accumulation of charges onto opposite surfaces. When a voltage is applied to the capacitor, the electric field across the two electrodes causes electrons to be collected on the metal sheets, thus creating an electric field inside the capacitor’s casing. This electric field affects the capacitance of the capacitor, thereby allowing electric current to flow through it.

The ECQ-U2A394MLA film capacitor is a suitable choice for a wide range of applications due to its wide temperature range and high capacitance. It has a low ESR value, which increases the capacitor’s efficiency and reduces the risk of failure due to heat generated by the capacitor. Moreover, its working principle is based on the accumulation of charges onto opposite surfaces, allowing electric current to flow through it.

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