8.6.2020
Sensata Technologies thermostats 3BT & 4BT
In very small sizes and weight from 0.2g.
Because of this low mass the response time is also very fast.
Physical dimensions from Ø5.5 mm and the height from 8 mm.
https://www.scnnordic.com/automation/components/thermostats/o7mm-probes/3bt_4bt