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Working with Backdrilling in Allegro PCB Designer: Best Practices
Licensing
Backdrilling is available using the base Allegro PCB Designer license.
Prerequisites
Cross section contains material thickness for both the conductor and dielectric layers.
Backdrill Application Information
Menu Location Manufacture > NC > Backdrill Setup and Analysis
Command
BACKDRILL SETUP
Relevant Properties
BACKDRILL_MAX_PTH_STUB (Net)
BACKDRILL_MIN_PIN_PTH (Symbol, Pin)
BACKDRILL_PRESSFIT_CONNECTOR (Symbol)
BACKDRILL_COMP_SIDE_ALLOWED (Symbol, Pin, Via)
BACKDRILL_EXCLUDE (Symbol, Pin, Via)
BACKDRILL_OVERRIDE (Symbol, Pin, Via)
Relevant Parameters
Drill Legend (Include Backdrill)
NC Drill (Include Backdrill)
Cross Section Chart (Backdrill Span)
IPC-D-356 (Ignore Backdrill)
Associative
MANUFACTURING
Subclasses
BACKDRILL-FLAG-TOP (Top side violation flags)
BACKDRILL-FLAG-BOT (Bottom side violation flags)
BACKDRILL-FLAG-ANY (Internal layer violation flags)
NCBACKDRILL-- (Backdrill legends)
