ECQ-E4474RJF

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Film capacitors, also known as plastic film capacitors, are a type of capacitor, typically a polarized capacitor, constructed with a dielectric film. It is one of the main types of capacitor and is used in a wide variety of consumer products, including filtering out low-frequency signals in audio applications, blocking or coupling of DC signals, and energy storage for pulse applications. The ECQ-E4474RJF is a metalized polyphenylene sulfide film (PPS) capacitor with excellent performance for a wide range of applications. This article will discuss the ECQ-E4474RJF application field and working principle.

The ECQ-E4474RJF features a low equivalent series resistance (ESR) of 0.13 ohms. This makes it ideal for applications requiring high-frequency ripple current capacity, noise reduction, and improved efficiency. The capacitor also has a long lifespan, with a rated lifetime of up to 5000 hours at 65°C temperature rise. The maximum operating voltage is 1600VAC and the rated temperature range is -40°C to 85°C. Its capacitance range is 30μF to 40μF.

The ECQ-E4474RJF is designed to meet the EMC requirements for power factor correction capacitors in high-frequency inverters. It offers low ESR, high ripple current capacity, and excellent high-frequency resonance characteristics. These features make it ideal for high-power and high-frequency applications such as motor drives, solar controllers, UPS, and general-purpose SMPS circuits. The characteristics also make them suitable for damping and snubbing applications used in high-frequency noise suppression and interference reduction.

The ECQ-E4474RJF is made of epoxy-coated or "oil-slick" metallized polyphenylene sulfide (PPS) film. The metalized PPS film has excellent high-frequency characteristics, and its low temperature coefficient ensures stable capacitance over varying temperatures. The film also provides superior dielectric strength and insulation resistance. Its low direct current electrical isolation ensures the safe and reliable operation of the capacitor.

The ECQ-E4474RJF has an internal construction that combines wound and stacked metallized PPS film elements. The film has a stack-up pattern that allows for a very low equivalent series inductance (ESL) of 5nH. This low ESL increases the capacitor\'s high-frequency ripple current capability and reduces noise levels. The low ESL also provides improved stability for inductive loads.

The ECQ-E4474RJF working principle centers on its construction. The capacitor contains two electrodes, each covered by metalized PPS films. When connecting the device to a power source, the positive and negative charges of the source flow through the capacitor\'s plates, creating equal and opposite static charges on each one. This electric field between the plates stores energy, forming an electric field between them. As the charge on the capacitor plates changes, the electric field also changes, which induces a current flow within the two electrode plates. This process is what allows the capacitor to store electrical energy.

Overall, the ECQ-E4474RJF is an ideal choice for a wide range of applications. Its excellent performance and durability make it suitable for high-frequency ripple current capacity, noise reduction, and energy storage for pulse applications. Its low ESL and temperature coefficient make it ideal for damping and snubbing applications. And its internal construction results in a device with low equivalent series resistance and improved stability and circuit protection for a range of power-related applications.

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