B25838L8186K4

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Film capacitors are one of the most common variants of capacitors and are widely used in a number of applications, such as power supplies, inverters, and electronic circuits. B25838L8186K4 is a type of film capacitor that is especially designed for high temperature requirements, with a maximum allowed operating temperature up to +125 degrees Celsius.

The B25838L8186K4 film capacitor contains a high-temperature insulation substrate and aluminum foil electrodes. The insulation substrate is usually made of polypropylene film, mica, PTFE tape or other dielectric material; these materials are very stable with low dielectric loss and high insulation strength. The core is wrapped in a polypropylene film which increases the mechanical strength of the capacitor and gives it its capacitance value. The aluminum foil electrodes are normally plated with a layer of Sn-Pb which increases the current carrying capacity of the capacitor.

The B25838L8186K4 film capacitor has a maximum capacitance of 4.7uF and a voltage rating of 400VDC. It also has a low ESR, which makes it suitable for use in high-frequency applications such as switching power supplies. The B25838L8186K4 film capacitor is also RoHS complaint, meaning it is safe to use in environments with dangerous levels of electrical shock and has a flame retardant rating of UL 94V-0.

The B25838L8186K4 film capacitor has several advantages over other types of capacitors, most notably its high temperature capability and long lifespan. The maximum tolerable operating temperature of the B25838L8186K4 film capacitor is much higher than other non-film capacitors; this makes it suitable for use in more demanding applications where higher temperatures are present. Furthermore, its polypropylene insulation and Sn-Pb plated aluminum electrodes provide superior insulation strength and current carrying capacity, resulting in an exceptionally long life expectancy of more than 20,000 hours.

The working principle of the B25838L8186K4 film capacitor is based on the same principles of operation as other types of capacitors. When it is connected to a power source, it stores an electric charge and creates a potential difference. This electric potential difference is stored as electric energy and is released when the capacitor is disconnected from the power source. The capacitance of the capacitor is determined by its geometry, shape, and dielectric constant of the material it is constructed with. The dielectric constant is a measure of the electrical resistivity of the material, and it determines the amount of electrical energy that can be stored for a given voltage.

The B25838L8186K4 film capacitor is an extremely reliable and versatile capacitor that can be used in a wide variety of applications. Due to its excellent electrical insulation properties, high temperature tolerance, low ESR, and low self-heating it is an ideal choice for use in circuits where reliability and high performance are important. Furthermore, its UL 94V-0 flame retardant rating makes it suitable for use in many high-temperature, safety-critical applications.

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