if you need it for specific model printer , pls write a comment for your order ,
need A30T hotend thermistor instead ( if your printer is A30T).
This 100K NTC thermsitor MF58 is recommended as temperature sensor to use with Geeetech(JIETAI) hotend.
50MΩ or over by DC500V megger (between glass and lead wire)
Thermal time constant (τ)
τ≤Sec(in still air)
Thermal dissipation constant (δ)
δ=2.1mW/°C (in still air)
Operating temperature range