This device's program size/dimension is 0.063Lx0.031W 1.60mmx0.80mm.A substance's temperature coefficient of resistance is generally defined as how its electrical resistance changes with per degree change in temperature.
0603J0500391KXT Features
a size/dimension of 0.063Lx0.031W 1.60mmx0.80mm with X7R 2R1 being the highest temperature coefficient
0603J0500391KXT Applications
There are a lot of Knowles Syfer 0603J0500391KXT applications of ceramic capacitors.