For a stable 5V supply, a ground plane is essential.
A schematic symbol represents electrical logic, while a PCB footprint represents the physical dimensions of the component on the board.
Constraints control your manufacturing tolerances, track widths, and clearings. Go to .
Every component needs a unique reference designator (e.g., R1, R2, C1).
Click . Review the generated .drc text file for warnings, unconnected pins, or short circuits. Fix any errors before proceeding. Assigning PCB Footprints orcad 16.6 tutorial
Right-click on film options to add your necessary layout layers (e.g., TOP , BOTTOM , SOLDERMASK_TOP , SILKSCREEN_TOP ). Set your formats to Gerber RS274X. Select all active film layers and click Create Artwork . Generating Drill Files
Once all ratsnest connection lines disappear, your board is fully routed. The final step involves validating the artwork and outputting files for production. Running Layout DRC Navigate to .
Under , dictate the minimum allowable air gap clearance between traces, vias, and pads (e.g., an 8-mil spacing rule). Routing Traces
Simulation is an essential step in electronic design. OrCAD 16.6 provides a range of simulation tools, including , to simulate and analyze electronic circuits. For a stable 5V supply, a ground plane is essential
With your netlist prepared, launch OrCAD PCB Editor to begin constructing the physical board. Setting Up Layout Parameters Open OrCAD PCB Editor and create a new layout file ( .brd ). Navigate to .
For new users, the interface can appear daunting. Unlike modern consumer software, OrCAD is a dense engineering tool packed with decades of legacy features. This tutorial will guide you through the essential workflow: setting up a project, creating a schematic, and preparing for the PCB layout.
You will now see the window on the left side of the screen. This is your command center, showing the hierarchical structure of your design.
A logical resistor needs a physical footprint (the copper pattern) to be soldered to the PCB. Review the generated
The physical layout environment where you place components on a virtual board, route copper tracks, and define board layers. Setting Up Your Environment
A standard schematic symbol often lacks simulation data. You must use specific PSpice libraries for simulation to work:
Each schematic symbol needs a corresponding physical footprint (e.g., 0805 , TO220 , LQFP48 ). Select the design file in the project manager.
Point to the netlist directory folder you generated in Step 3.
If the libraries are empty, click the (configured as a green plus icon). Browse to the OrCAD installation directory (usually C:\Cadence\SPB_16.6\tools\capture\library ) and add core libraries like Discrete , Amplifier , and Connector . Search for your component (e.g., RESISTOR , CAPACITOR ).