ECAD-type PCB objects accurately model the traces and vias in the PCB by importing ECAD files. Since the precise geometry of the traces and vias are imported from the ECAD database, ECAD-type PCBs are the most detailed and accurate of the four types of PCBs in Ansys Icepak. However the actual geometry of the traces and vias is not meshed along with the rest of the CFD model. Instead, the effect of the traces and vias is modeled in each of the CFD mesh cells by computing orthotropic conductivities from the imported trace and via geometries. Each of the metal and dielectric layers is modeled separately, thereby maintaining a high degree of accuracy.