There is a Bulk package for NTC thermistors. The package LL-31, MICRO-MELF includes it for convenience. As a result, the resistance tolerance for NTC thermistors is ±1%. If you wish to ensure reliable performance, you should set the temperature of NTC thermistors to -55°C~220°C.
MM203J1F Features
Package/Case: Bulk MM Series Operating Temperature: -55°C~220°C Mounting Type: Surface Mount
MM203J1F Applications
There are a lot of Littelfuse Inc. MM203J1F NTC Thermistors applications.