Why do manufacturers now choose film capacitors (II)?

3, high rated voltage, no need for series and balancing resistors

In order to increase the output power, the bus voltage of hybrid vehicles and fuel cell vehicles is constantly increasing. The typical battery voltages available on the market today are 280V, 330V and 480V. The matching capacitors are not the same, but generally choose 450V, 600V, 800V, and the capacity is from 0.32mF to 2mF.

4, strong ability to withstand surge current

Capable of withstanding large currents, the use of wave cutting technology and capacitor coating thickening technology can improve the product's inrush current temperature and mechanical impact.

5, product safety is good, strong overpressure resistance

Since the film capacitor has a self-healing phenomenon, and the film capacitor is designed according to the standard of 1EC61071, the capacitor anti-surge voltage capability is greater than 1.5 rated voltage, and the capacitor adopts the split film technology, the capacitor theoretically does not cause short-circuit breakdown. Phenomenon, which greatly improves the safety of this type of capacitor, the typical failure mode is open circuit. The peak voltage capability of the capacitor in a particular application is also an important indicator of capacitance. In fact, for electrolytic capacitors, the maximum surge voltage allowed to withstand is 1.2 times, which forces the user to have to consider the peak voltage instead of the nominal voltage.