Ceramic Capacitor Power Rating

Power ceramic capacitors can be made to withstand voltages in the range of 2kv up to 100 kv with a power specified at much higher than 200 volt amperes.

Ceramic capacitor power rating.

Either the maximum voltage rating or the maximum power dissipation of the part limits the maximum current through a capacitor. Historically the dv dt rating of multi layer ceramic capacitors mlcc s is not a parameter that has generally been requested by customers or provided by manufacturers. This note discusses the relationship of current handling power dissipation applied voltage and the maximum rated voltage of a multi layer ceramic capacitor. They can actually fit an x7r decoupling cap in this tiny form factor.

Class 2 power ceramic capacitors are used for circuit breakers for power distribution lines for high voltage power supplies in laser applications for induction furnaces and in voltage doubling circuits. Power ceramic capacitors can be supplied with high rated voltages in the range of 2 kv up to 100 kv. Dv dt ratings for multi layer ceramic capacitors. In recent years however as the maximum capacitance values of mlcc s has increased in any given case size many customers have looked to mlcc s as replacements for metalised film capacitors mfc s which have suffered from supply difficulties and shortages.

The dimensions of these power ceramic capacitors can be very large. Smaller mlccs used in printed circuit boards are rated to voltages from only a few volts up to several hundreds of volts depending on the application. At high power applications the losses of these capacitors can generate a lot of heat.