BFC233926105

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Film Capacitors

Film capacitors, also known as polyester or polypropylene capacitors, are made of plastic films instead of the paper used in traditional capacitor designs. These type of capacitors are less susceptible to temperature and humidity variations and are commonly used in a wide variety of electrical applications. The BFC233926105 is a popular example of such a capacitor, and here we discuss its application field and working principle.

Application Field

Produced by BI Technologies and Cornell Dubilier, the BFC233926105 is a radial-lead multilayer film capacitor designed with a high capacitance to voltage ratio. This makes it suitable for use in applications that require high capacitance at low working voltages, such as audio and video equipment, high-definition television/LCD monitors, medical/dental equipment, telecom systems and power supplies. The capacitor also has excellent AC and pulse energy performance. It is rated for up to 2.5A, with a maximum operating temperature of 125°C. The capacitor is UL rated and meets the requirements of IEC 60384-14.

Working Principle

The BFC233926105 is a multilayer film capacitor constructed from a variety of plastic films and epoxy-impregnated paper. The nature of the plastic wrapped layers creates a dielectric barrier that allows for a higher capacitance than traditional paper capacitors. The dielectric strength of the material is also very high, allowing for a greater working voltage. The capacitor also features a pressure-sensitive adhesive material on both sides of the device, ensuring a tight electrical bond with pair terminals.

The underlying principle of the device is that it stores charge by the accumulation of electrons on a pair of dielectrics. This is done by exchanging charges between the negatively-charged dielectric and the positively-charged electrodes. As electrons accumulate around one electrode, they repel electrons from the other and with this, electric current is conducted. This phenomenon allows the capacitor to store electrical energy.

The device also utilises a construction called ‘self-healing’, which involves a specialised arrangement of individual polarised layers. For every layer in the device, a positive layer is precisely matched and offset to a negative layer. This arrangement creates two polarities allowing the capacitor to automatically heal itself if one of the layers is punctured. This makes the capacitor extremely reliable, even in the presence of harsh electrical and environmental conditions.

Conclusion

The BFC233926105 is a popular multilayer film capacitor designed for a wide variety of applications in areas such as audio and video equipment, medical/dental equipment and telecom systems. Its unique construction allows for a high capacitance and working voltage, as well as a high dielectric strength, making it an excellent choice for a range of applications. The device’s self-healing construction also makes it extremely reliable and robust in electrically demanding circumstances. All in all, the BFC233926105 is a quality film capacitor, designed to meet the requirements of even the most rigorous applications.

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