AutoCAD Tutorial – A Quick Explanation of Layers for Printed Circuit Boards

This AutoCAD Tutorial will make clear how to established up levels in AutoCAD for the digital field.

Although creating in AutoCAD, the drafting schematics, structure PCB artwork, specific fabrication listing and assembly drawings are all drawn on various levels.

In this article is an rationalization of levels that are generally developed for an Digital PCB structure:

one. The silkscreen on the leading aspect of the PCB

The silkscreen incorporates part outlines and legends etched with white ink on the leading aspect of the PCB. The producing of PCBs requirements a legend silkscreen made up of the reference designators (parts).

two. The circuit traces on the solder aspect of the PCB

Digital schematics consisting of symbols that characterize the personal digital areas that are essential to make an AutoCAD drawing. These digital symbols are interconnected with strains that characterize the true electrical connections and are annotated with textual content made up of the technical specs of the parts employed. The essential schematic symbols are standardized and also accessible as a library for use in AutoCAD which simplifies the procedure of making schematics.

three. The pads for by means of gap parts.

Libraries of endpoint symbols are accessible which, with numerous gap styles and dimensions, will need to be integrated into the drawing.

four. Any unique solder mark designs on the parts aspect of the PCB.

The reference designators are employed to decide the locale of parts on the PCB, and employed throughout producing, as perfectly as troubleshooting the PCB at a late time.

five. Drill symbols and characteristics affiliated with the pads of thro gap parts.

The drill characteristics in the drawings give the drilling aspects employed by computerized devices for drilling holes.

six. Drawing border, title & other aspects employed in documentation essential for producing.

A specific listing of parts essential for producing the PCBs can be extracted from the AutoCAD drawing. After the format is full the AutoCAD drawing is transformed to Gerber and Excellon file formats, which is field conventional for picture plotting PCB artwork. These file formats are essential for producing PCB’s when utilizing 3rd bash incorporate-on software package.

The next industries can advantage from placing up their levels the way it is instructed in this AutoCAD Tutorial:

one. Analysis and academic establishments for creating digital programs.
two. Digital products corporations for structure and producing of circuits, PCBs and prototypes.
three. Digital engineers for creating and producing circuits, PCB’s and prototypes.
four. Suppliers for extracting details out of the drawings and utilizing it for creation.

Source by Lily Lucas