The package Bead, Glass includes it for convenience. As a result, the resistance tolerance for NTC thermistors is ±5%. If you wish to ensure reliable performance, you should set the temperature of NTC thermistors to -55°C~300°C.
GL502F9J Features
GL Series Operating Temperature: -55°C~300°C Mounting Type: Through Hole
GL502F9J Applications
There are a lot of Littelfuse Inc. GL502F9J NTC Thermistors applications.