Defining a Two-Resistor Component

You can apply properties to a 3D part that model the behavior of two resistors in parallel.

When you define a two-resistor component in one finite element model (FEM) representation, the app defines it in all FEM representation instances.

Before you begin:
  1. Create the geometry of the actual electronics package.
  2. From the product structure, select a simple block to replace this geometry.
  3. Mesh the simple block.
  4. Add the simple block to the simulation.
See Also
About Two-Resistor Components
  1. From the E-Cooling section of the action bar, click Two-Resistor Component .
  2. Optional: Enter a descriptive Name.
  3. In the 3D area, select a simple block.
  4. In the 3D area, select a board surface.

    A board surface typically refers to the surface of a chip or printed circuit board.

  5. In the 3D area, select a case surface.
  6. Enter a value for the Junction power, which is the center of the package where power is applied.
  7. Enter a value for the JC resistance, which is the resistance between the junction node and the case node.
  8. Enter a value for the JB resistance, which is the resistance between the junction node and the board node.
  9. Enter a value for the Emissivity, which is a measure of the thermal energy emitted by the surface of the component.

    The emissivity is a value between 0 and 1, inclusive.

  10. Click OK.
    You can now create a history output request for the junction temperature.