Purpose

A hole that is supposed to be isolated from power or ground planes must be kept apart from copper. The distance which is required is typically larger than regular spacing due to the higher than usual current.

Function

For drills that do not touch copper, reports the distance from the edge of the drill to the nearest copper when less than the pp_d2c action parameter.

Activation

 

Known Limitations

In Positive P&G layers no associated copper feature is reported.

This category may also be considered as the spacing of the hole from the copper or its laminate annular ring; normally it shows how well holes are embedded in laminate.