NPTH to Copper (Drill)

Reports NPTHs closer than pp_d2c or touching copper.

Internal ERF Name

<Area>:npth2c

Measurement Shape

Measurement ID

Segment

Drill and clearance (in negative layer) or none (in positive layer)

Layers Displayed

Power and ground layer

Drill layer piercing it

Graphic

Purpose

A non-plated through hole should be kept away from copper surfaces since it is used for mounting and tooling by metal objects.

Function

Reports NPTHs closer than pp_d2c or touching copper.

In negative power and ground layers, a violation is an NPTH whose clearance is not large enough. In positive power and ground layers, a violation is an NPTH too close to copper features.

ERF Parameters

pp_d2c

ERF Variables

take_npth_range

Constraint

Non-plated Hole Spacing

Limitations