It is common to find NTC thermistors packaged in the form of a Bulk. In order to make it more convenient, it has been included in the package Radial. NTC thermistors are designed to operate reliably at temperatures below 170°C. In order to preserve reliability, NTC thermistors should not be operated at temperatures below -55°C. The NTC thermistors must have the 2 pins connected for them to work properly. Fuse elements can withstand currents as low as 6.4A without suffering much damage.
B57238S509M51 Features
2 Pins Package/Case: Bulk 5Ohm Resistance Current Rating of 6.4A 20% Tolerance
B57238S509M51 Applications
There are a lot of TDK Corporation B57238S509M51 NTC Thermistors applications.