Ceramic capacitor is necessary to have a temperature that is greater than -25°C for stable operation.A substance's temperature coefficient of resistance is generally defined as how its electrical resistance changes with per degree change in temperature.In a capacitor, the lead pitch is just the distance (spacing) between adjacent threads.
CK45-R3DD331K-NRA Features
with -30/+15% ppm/°C being the highest temperature coefficient
CK45-R3DD331K-NRA Applications
There are a lot of TDK Corporation CK45-R3DD331K-NRA applications of ceramic capacitors.