Our Mechanical team is doing a thermal study on the 65W project.
We are working on and they need Rjc(junction-to-top case) and Rjc (junction-to-bottom case) for CYPD3121-40LQXIT.
As these data are not indicated top or bottom case on your published datasheet of Tjc parameter.
Please help to check for this data.
Tjc in CCG3 datasheet represents for junction-to-top case thermal resistance. And we do not have data for junction-to-bottom thermal resistance. The device power consumption is a relatively a small number compared to Tjc number, which makes minor difference between top and bottom temperature.