1206 includes it as a convenience. NTC thermistors are reliable when operating at 125°C. NTC thermistors can operate at -55°C for relability. The 2 pins of the NTC thermistors must be connected to make the thermistors work correctly.
B57621C5103J62 Features
2 Pins 10kOhm Resistance 5% Tolerance
B57621C5103J62 Applications
There are a lot of EPCOS B57621C5103J62 NTC Thermistors applications.
Temperature compensation of display contrast
Temperature compensation of display backlighting (CCFL)