Civilian DC high voltage ceramic capacitors are mainly used in mechanical equipment testing instruments. Such as X-RAY, CT machine, DC high-voltage generator, mainly for voltage doubling, voltage division, coupling, carrier and other functions. The selection of DC high voltage ceramic capacitors is different due to different usage occasions. Generally, low-frequency dielectric ceramic capacitors such as Y5V and Y5U can only be used in occasions within 1KHZ, mainly in a power frequency 50HZ environment. Class II ceramic capacitors such as Y5T and Y5P can be used in high frequency (30KHZ~100KHZ) environments. N4700 can be used in high frequency environments above 550KHZ. The higher the material grade, the higher the frequency range, such as NP0, N150, N750, etc., which can be used above 1GHZ.
The civil DC high voltage ceramic capacitors mainly include the following parameters:
1. Voltage level;
2. Capacity grade;
3. Temperature coefficient;
4. Appearance size;
5. Frequency characteristics;
6. Loss factor;
7. Insulation resistance;
8. Leakage current;
9. Internal resistance