ERF Variable

Description

v_shave_pth_for_smd_bridge

v_shave_via_for_smd_bridge


 

Enables you to shave PTH or via clearances, even if the pad is covered partially with solder mask, in order to solve the SMD Clearance vs. Bridge Compromise. This Compromise is required because there is not enough room for a minimal clearance between the pad and its annular ring, and to also create a minimum bridge.between the clearances.
The screen parameters Bridge Location %: SMD Vs PTH or Bridge Location %: SMD Vs Via must be set to 100% to enable these ERF variables. Normally, these two screen parameters enable you to place the bridge between an SMD and a PTH (or via) closer to one feature or the other. However, the entire pad had to remain covered in soldermask for this adjustment to be made. By using these “v_shave...” ERF variables, you can move the bridge even if you expose some part of the pad.
Examples:

v_shave_pth_for_smd_bridge = Yes       v_shave_pth_for_smd_bridge = No