I'm trying to determine the maximum non-operational limits of my system. The operational limits are easy to determine as they are provided in all of the datasheets for each of my components. However, a lot of my passive components do not provide non-operational or storage temperature limits. Currently my approach is to use the operational limits when no non-operational limits are provided. This means that my system is limited by ceramic capacitors (rated to +85ºC), which seems intuitively incorrect.
- Ceramics are usually quite resilient to high temperatures
- They have to survive soldering, which includes very high temperatures (lowest pre-heat temp I could find is 100ºC)
- From what I can see in the datasheets, heat affects capacitance which I don't care about while it's off
There are a lot of capacitors in my system but the ones in question are all ceramic caps rated to +85ºC operational. The following is a datasheet for an actual cap from the system which should be representative: cl03a104kp3nnnc capacitor datasheet
The best answers will be supported with facts and provide a method to determine the maximum non-operational temperature based on known factors (use the provided datasheet for knowns). That said, I would also appreciate a rule of thumb as a bonus. My gut feel is that as long as the solder doesn't melt the cap will be fine but I'd be happy to hear how others feel.
Follow-up: Just to be clear, when I say "non-operational" I mean that the system is assembled and in a real environment but the system is off. This is not shelf storage.