For this device, the size/dimension of the program is 0.224Lx0.197W 5.70mmx5.00mm.As a general rule, temperature coefficient of resistance is simply the change in electrical resistance of a substance per degree change in temperature, and its value is X7R.
CAS21C181JARFC Features
a size/dimension of 0.224Lx0.197W 5.70mmx5.00mm with X7R being the highest temperature coefficient
CAS21C181JARFC Applications
There are a lot of KEMET CAS21C181JARFC applications of ceramic capacitors.