I have been studying the derating effects of temperature on voltage rating of capacitors (ceramic). Something like the image shown below:
The image is the derating curve for a tantalum capacitor. This means that the voltage rating of the tantalum capacitor varies w.r.t temperature. But, does this behaviour also happen in ceramic capacitors?
I had a discussion on the same topic (Capacitor derating).
There I was told that such a behaviour does not affect ceramic capacitors as it does tantalum. But, I just saw a European Space Agency (ESA) document stating the derating curve for ceramic capacitors. The document is in the ESA documents database, and the document is ECSS-Q-ST-30-11C-Rev1.
So in this document a similar derating curve (similar to the tantalum) is shown on page 22.
Now, I have looked at quite a few space-grade ceramic capacitors, but none have such a derating information. So, what is this paramenter that is being shown in the ESA document?