Application of Film Capacitors
1 DC voltage application characteristics
1.1 Rated voltage (Rated Voltage-VR)
Rated voltage is defined as: within the rated operating temperature range (Tmin ~ TR), the capacitor can withstand the maximum continuous DC voltage. It is related to the dielectric material and the thickness of the diaphragm.
1.2 The relationship between the maximum DC voltage and temperature
The temperature range category of the capacitor is given—the upper and lower limit ambient temperature values (Tmin ~ Tmax) that the capacitor can work normally continuously. Within this range, it defines the rated temperature ( rated temperature TR ) at which the capacitor can continue to work normally under a VR condition. The value of this voltage depends on the capacitor's dielectric material. In general, for film capacitors:
0.1μF/275V D2 High DF Cause Analysis Capacitor is one of the most used components in electronic equipment, and DF value is one of the four parameters to measure capacitor performance (capacity, DF, insulation, withstand voltage), which directly leads to capacitor Fever during use. When the heat generated inside the capacitor is greater than the heat radiated to the outside, the temperature inside the capacitor is getting higher and higher, and finally the thermal breakdown of the capacitor is caused.