Working with Backdrilling in Allegro PCB Designer: Best Practices
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Prior to executing Backdrill
The final step is to ensure that all of your padstacks contain the backdrill information
that can be used at each backdrill location.
Padstack Parameters tab of the Backdrill Setup and
Analysis form
Padstacks which do not have backdrill data will be automatically updated based on the
criteria in this tab. Padstacks with user-defined backdrill data, from the Library or
manually entered in the design padstacks, will be used during the backdrill process and
will not be updated based on this criteria.
Tool Tip – Selecting the ? button next to each of the fill-in fields will describe and assist
in value entry to achieve the desired result.
The Details button will generate a list of all the padstacks in the design and identify the
padstacks which have user-defined backdrill information.
