I have a device that contains this capacitor: https://search.murata.co.jp/Ceramy/image/img/A01X/G101/ENG/GRM21BR71H104JA01-01.pdf
The rated temperature range was listed as -55°C to 125°C. However, in the section "Storage and Operation condition", it states "The performance of chip monolithic ceramic capacitors may be affected by the storage conditions. Store the capacitors in the following conditions: Room Temperature of +5℃ to +40℃ and a Relative Humidity of 20% to 70%."
I'm wondering why there is such a huge discrepancy. Does this mean that if I needed to keep the capacitor in a 80℃ environment, I need to keep the capacitor powered at all times? Or maybe the +5℃ to +40℃ values are specific to the pre-soldered state?