Other Parts Discussed in Thread: TMP117
Tool/software:
I have some questions regarding the component "TMP119 - Digital Temperature Sensor"
1.
I am interested in using the TMP119 to measure the temperature of a solid surface.
The data sheet (and other referenced documents) indicates that the measured surface should be connected to the PCB at the side opposite to the TMP119, this implies that the TMP has a "good" thermal connection to its bottom side.
However, the data sheet also indicates that the thermal resistance from the junction to the top of the case is 1 °C/W while the resistance from the junction to the board is 40.9 °C/W, this implies that the TMP has a "good" thermal connection to its top side.
How do these two pieces of information coexist?
Is it possible, and even more accurate, to measure the solid surface by connecting it to the top side of the TMP?
2.
In the case of connecting the measured surface to the PCB you recommend leaving exposed copper at the contact area.
What do you recommend in order to prevent oxidation of the copper?
