How to add plating on PCB.

- March 8, 2023 at 11:32 pm
  
  Yang Li
  Subscriber
  
  I want use SI Wave DCIR simulate PCB trace DC Resistance. On the PCB, some layers conductive meterial is 1 Oz copper. And at top/bottom layer, there will be 2um gold plating. At Layer stackup editor, I only can assign one material each layer. How to add gold plating to simulation?
  Second question: I also need calcualte trace capacitance reference to GND(Let's say if I can ignore the other traces factors). Under DC tap-there is compute inductance, but I couldn't find compute capacitance option. If I want compute capacitance, what is the best way?
  The last question: Does SI Wave use 2.5D solver DCIR simulation?
- May 5, 2023 at 6:01 am
  
  Mrinmoy Bharadwaj
  Ansys Employee
  
  Question1, Response: You can use "overlapping" instead of "Laminate" stack-up option inside HFSS 3D Layout to construct a plating on your top and bottom layers.
  Question2, Response: For extracting RLGC you can use the CPA solver inside SIwave and use the Q3D solver.
  Question3, Resposne: SIwave uses both 2D solvers and 3D solvers as per requirement.