Definition

Design Rule Check (DRC) is an automated process in PCB CAD software that verifies the design against manufacturing constraints. DRC checks include minimum trace width/spacing, annular ring size, drill-to-copper clearance, solder mask openings, and silkscreen clearance. Running DRC before releasing Gerbers catches design errors early. Fabricators also run DRC during CAM review and may flag violations not caught by the designer's rules.