Working with Backdrilling in Allegro PCB Designer: Best Practices
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Tool Tip – It is recommended to generate the Backdrill layer pairs based on Backdrill
Analysis of the design to ensure that all the necessary backdrill layer pairs are
generated. The layers pairs based on analysis will attempt to completely remove the
entire stub, regardless of the value assigned to the BACKDRILL_MAX_PTH_STUB as
long as a layer pair exists to do so.
Once Analysis runs, the number of Plunges (backdrill candidates) will be generated.
