A Compact Thermal Model material is assigned to a part. Upon startup, one or more of the following errors is issued:
(Error 1): Theta JB is less than or equal to 0
(Error 2): Theta JC is less than or equal to 0
(Error 3): The surface part conductivity between the board and the CTM is less than or equal to 0
All of these issues are material property settings. Modify them using the Material Editor. (Click Edit on the Material task).
(Error 1) Theta JB is the conductivity between the junction and the board. The value must be greater than 0 to make physical sense. To resolve, assign a value greater than 0 for Theta JB.
(Error 2) Theta JC is the conductivity between the junction and the case. Its value must be greater than 0 to make physical sense. To resolve, assign a value greater than 0 for Theta JC, the resistance between the junction and the case
(Error 3) A surface part is placed between the PCB and the Compact Thermal Model. The thermal conductivity assigned to this part must be greater or equal to zero. To resolve, adjust the thermal conductivity of the surface part to be greater than 0.
This page has been translated for your convenience using a machine translation service. This does not serve as an official translation and may contain errors and inaccurate translations. Autodesk makes no warranty, express or implied, as to accuracy, reliability or completeness of any information translated by the machine translation service and shall not be liable for any damages or loss from your reliance on the translation service.