EPD (Core Engine for use with AutoCAD) Tool Set

Electronics Packaging Designer or EPD is the core engine for all EPD Design Suites. This design system of LISP and ARX routines was developed in-house at CAD Design Software and was developed and used in our in-house design bureau. Over the next 25+ years of experience and interaction with our customers, we have received experience in all types of packaging and layout designs that have driven the industry.

CAD Design Software is an Authorized Developer of Autodesk®. CDS has been creating software for over 20 years using the AutoCAD® engine as the base graphics engine. Using LISP and ARX routines we call this intelligent design engine, Electronics Packaging Designer or EPD. This core design engine (EPD) is tailored for specific technologies and industries. The result is faster, more accurate designs than are possible with other "Design Automation" tools. Electronics Packaging Designer (EPD) is the best environment for all types of designs and layouts.


When launched, CAD Design Software allows the user to create an intelligent drawing environment. It loads standard design layers, design measurement units, clearance rules, and other default settings to use during the design process. These settings are saved with the drawing along with netlists and other embedded settings. This design standard was built to aid the user in automatically creating layouts using a parametric-driven design practice and offer dynamic manipulation of design components.

All of the Host-Platform (AutoCAD) commands and features are available to use in conjunction with EPD commands. Commands such as drawing polylines (PLINE) on EPD layers to be recognized when running electrical checks. Create unique or irregular shapes for Traces, Cavities and Boundaries to be used in the design. Using the built-in autosnap and grid functions allows precise placement of parts, nodes and routing with different angles. Routing features include real-time DRC for trace, terminal and via clearances.

Use EPD to create components parametrically and then place them into your designs. Parts are created by parameter input though dialog boxes, the part is placed, blocked, and saved to a library. You can also import parametric parts from our vast libraries of commonly used components. Parametrically created parts are easy to manipulate and modify as your design specifications change.

See the Software Product Suites that are built using the EPD Core

See the EPD Viewer package if required to view EPD-Made designs

EPD contains many parametric and visual component libraries, and a highly automated design process that uses interactive routing utilities, Automatic Plane Control, LVS, and DRC. A technology system stores the material stack up, all DRC, LVS, Gerber output and all other settings made in any program that is part of the core or part of any suite. These files may be saved and reloaded for use in a future design. It includes many utility commands for use in solder mask generation, via creation, interactive routing, highlighting of nets, layer control and many other functions, etc. 

Read About the PCB Technology


  • Customized parts list generated from the schematic or layout may be automatically placed in the drawing as a table.

  • Complete ANSI standard drafting and global editing utilities are built in

  • Any number of layers possible and Unlimited pin count

  • All unit systems are supported: inches, mils, millimeters and microns

  • Eight digits of accuracy with floating decimal point (1/100,000,000 of one unit) is standard

  • Parts are placed after an automatic search of all libraries for footprints in the netlist

  • Dynamically moves parts including rats while optimizing the rats dynamically

  • Automatic creation of drill tables and hole symbols, plus storage of hole symbol selections for future reruns

  • Automatically create / read-in fabrication and assembly notes.