STEP
STEP (Standard for the Exchange of Product Data) is an ISO standard (ISO 10303) for 3D CAD data exchange. LinkCAD exports 2D layout data as extruded 3D solids in STEP format, making it possible to bring IC mask geometry into mechanical CAD environments.
Format Summary
| Property | Value |
|---|---|
| Extensions | .stp, .step |
| Encoding | ASCII |
| Import | — |
| Export | ✓ |
| License | 3D Modeler |
| Layers | Each layer maps to a 3D body at a specified Z-height |
Export Options
| Option | Description | Default |
|---|---|---|
| Extrusion height | Z-height for extruding 2D polygons to 3D | 1.0 |
| Units | Output coordinate units | Micron |
How It Works
LinkCAD takes each 2D polygon in the layout and extrudes it along the Z-axis by the specified height, producing a 3D solid representation. Each layer can be assigned a different extrusion height, allowing multi-layer stacks to be represented with physically meaningful geometry.
Common Workflows
GDSII → STEP
Convert IC mask layout to 3D STEP geometry for mechanical integration, package design, or visualization.
DXF → STEP
Extrude 2D mechanical drawings to 3D for use in MCAD systems.
Technical Notes
- STEP is export-only in LinkCAD; to import 3D geometry and extract 2D cross-sections, use ACIS SAT import instead
- The 3D Modeler license bundle is required
- Output is compatible with any MCAD application supporting STEP AP203/AP214
CLI / Command-File Options
These option keys can be used on the command line or in command files.
Export
| Key | Type | Description |
|---|---|---|
StepOutUnits | int | Output coordinate units |