The package 0402 includes it for convenience. A maximum operating temperature of 125°C is required for the reliable operation of NTC thermistors. For reliability, NTC thermistors may be operated at a temperature of -55°C.
B57999V2999J099 Features
B57999V2999J099 Applications
There are a lot of EPCOS B57999V2999J099 NTC Thermistors applications.