PME271Y447MR30

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Film capacitors are a broad category of capacitors that contain a dielectric material between two conductive elements. These capacitors are ideal for applications in high-frequency power conditioning, energy storage/transmission, and AC line filtering as due to their low ESR, low inductance, excellent voltage-proofing, low temperature coefficient, and high stability. In this article, the particular film capacitor model PME271Y447MR30 will be discussed in terms of its applications, as well as its working principles.

Applications: The PME271Y447MR30 is a polypropylene film capacitor with a temperature range of -55°C to +125°C. It is ideal for applications that require high voltage and high frequency capabilities, such as radio frequency circuits, automotive electronics, and power supplies. It has excellent capacitance stability under temperature changes. The PME271Y447MR30 is rated for 250V AC working voltage, and can handle voltage shocks up to 1100V AC. Its ripple current rating is 20mA, making it suitable for avoiding input power noises and maintaining stable current supply to the load.

Due to its low ESR, the PME271Y447MR30 is ideal for applications that require high AC line filtering with reduced noise. In many modern day electronic appliances and power supplies, the power signal goes through a filtering process before it is sent to the electronic device. The PME271Y447MR30 is well-suited for this type of job by providing noise reduction with good di/dt stability and low insertion loss. It can also be used in audio systems in order to reduce noises from the power signal.

Working Principles: The PME271Y447MR30 is a two-terminal capacitor, with terminals as electrodes. These electrodes are separated by a dielectric material, which is a film of polypropylene in the case of this capacitor. When a voltage is applied across the two electrodes, electric charge accumulates on their surface due to the attraction and repulsion between charges of a similar polarity. The accumulation of charge creates a capacitor, with the dielectric material stored between the two electrodes acting as an insulator between them. This capacitor can store energy, as the electric field between the two poles results in a particular capacitance (i.e. the capacitance of the capacitor is dependent on the permittivity of the dielectric material, the area of the electrode, and the distance between the two).

The PME271Y447MR30 is a particularly good capacitor in terms of AC line filtering due to its low voltage coefficient and fast rise time. The voltage coefficient of a capacitor is the amount of capacitance value change as the voltage between the two poles changes. In the PME271Y447MR30, the voltage coefficient is very low, allowing for greater stability in terms of capacitance. Its fast rise time further adds to its stability, as it can respond quickly to changes in voltage. This makes it ideal for applications that require fast response times and low voltage coefficient, such as high frequency radio signaling.

Overall, the PME271Y447MR30 is a great film capacitor for various applications, ranging from filtering AC power signals to audio systems. Its flexible working voltage and temperature range allow for a wide range of use cases, while its high capacitance stability and fast response time make it ideal for applications that require low ESR and quick response times.

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