Why are there two temperature categories for safety ceramic capacitors

What is a safety ceramic capacitor? There is a type of blue circular capacitor, small and translucent, which is called a safety ceramic capacitor.
Safe ceramic capacitors refer to safe capacitors, which are used in situations where the failure of the capacitor will not cause electric shock and will not endanger personal safety. Safe ceramic capacitors are divided into Y1 capacitors and Y2 capacitors, which are safe ceramic capacitors. Safe ceramic capacitors are used for AC and require safety certification.

Safe ceramic capacitors are used in various electronic products to safeguard the safety of our users. When selecting safety ceramic capacitors, there will definitely be many parameters for reference. For example, capacity; Voltage; Error; Voltage resistance; Regarding humidity categories, we can see from the safety regulations for ceramic capacitors that there are two temperature categories: -40 ℃~+85 ℃ and -40 ℃~+125 ℃. What would be the difference between the two?

-40 ℃~+85 ℃, -40 ℃~+125 ℃ are the working temperatures of the product, which are also consistent with the temperature applied for safety certification of safety products. The Y capacitor product has passed a certification for the highest temperature of 125 ℃. Some customers previously reported 85 ℃, but now the highest temperature of 125 ℃ includes this temperature. The meaning is that safety ceramic capacitors can operate at two extreme temperatures. Not affected