Working with Backdrilling in Allegro PCB Designer: Best Practices
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Padstack Editor Backdrill Data Support
Padstacks now support the definition of backdrill specific data, which will be used at
backdrill locations. No need to generate special padstacks or keepouts to maintain
design integrity. Your fabrication vendor can provide backdrill requirements to assist in
padstack updates.
• Backdrill diameter size and special drill legend figure
• Backdrill start layer copper pad, clearance anti-pad and route keepouts
