ECQ-B1391JF

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Film Capacitors

Film capacitors are passive components that store electric energy and are used in many different applications. They offer a wide range of capacitance values due to their wide range of dielectric constants. The ECQ-B1391JF is a film capacitor that has a very specific application field and working principle.

The ECQ-B1391JF is a film capacitor with Metallized Polypropylene Film (Mylar) dielectric to provide high-speed operation. It is designed for use in demanding applications such as power supplies where high ripple current and large transient events are typical. It is also well suited for electrolytic capacitor replacement or where a film capacitor can be used to improve system performance.

The ECQ-B1391JF offers high-speed operation—capacitors with this dielectric can rapidly charge and discharge current pulses with minimal distortion or losses. The ECQ-B1391JF has a rated voltage of 250VDC/275VAC and its maximum operating voltage is 420VDC/450VAC. The capacitance range is 0.47uF up to 20uF. The self-inductance is 0.3uH. The capacitance tolerance is ±10% and the AC insulation resistance is 5000Mohm.

These film capacitors are used in various applications that range from motor drives to lighting, AC/DC smps, DC/DC, and HV/LV converters. It is also used in class X capacitors, power conditioning systems, relay power supplies, UPS, and in Industrial and process automation systems.

The ECQ-B1391JF film capacitor works by accumulating charge and storing it until it is released. When a current is introduced into the capacitor, it creates a voltage across the capacitor plates. This voltage is stored and accumulates until the capacitor is discharged. Thus, the entire operation process is a form of charge and discharge.

The capacitor is typically used in circuits where high levels of current are required. It has a low inherent inductance that is effective in reducing peak current and voltage variations, thus allowing for smooth, continuous power flow. Additionally, its high current and ripple current capability will protect other sensitive elements in the circuit and can help ensure that the entire system will remain functional for a long period of time.

The ECQ-B1391JF film capacitor is an important element in many electronic systems due its capability of high-speed operation, low-inductance, and very good capacitance stability. It is an important component in many applications, ranging from motor drives to lighting, AC/DC smps, DC/DC, and HV/LV converters. With its wide range of capacitance values, it offers a very specific application field and working principle that make it often preferred over other types of capacitors.

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