Film capacitors are capacitors constructed with thin film as the dielectric which facilitate miniaturization and higher capacitance. The BFC233927222 is a series of film capacitors developed for high pulse current load applications in the field of motor control, power supplies and power systems. It features a wide voltage range of 50VDC to 500VDC and vibration and shock resistance capabilities. Such components are designed to securely capture sudden voltage surges and current changes resulting from the frequent starting or stopping of large appliances, motors and other electrical loads.

In terms of working principles, the BFC233927222 utilizes an aluminum foil as the positive electrode with a polypentene film as the dielectric and a tin-plated copper foil for the negative electrode. These films carry easily controlled amount of electric charges and vibrations which cause the capacitors to distrubute and evently conduct electricity. This special manufacturing result in higher breakdown voltage and a higher thermal and pulse current capacities. Other features standard of the BFC233927222 includes low equivalent series resistance and dielectric loss factor, superior heat resistance, high reliability, and low noise and size.

The BFC233927222 is usually employed at a pulse current of up to 2200 A, a rated voltage of 250VDC and an operating temperature range of -25 to 85°C. They are widely renowned for their robust and reliable performance across the power industry, in particular motor control and the automotive industries. The devices are suitable for various uses such as to supply power for home appliances, digital audio systems, inverter AC/DC motor, industrial lighting, and medical equipment. Apart from electrical systems, the components are also found integral parts for hydropower projects.