Component Spacing

Check the clearance between component classes.

Depending on the component class combinations, PollEx DFM can assign different clearance values.

The Component Spacing dialog contains the following sections:
  • Target Components’ Placed Layer: Select the target components placed layer.
  • Class Division: At the table, set the component class combination and their clearances.
    • Default Reset: Reset all set statuses.
    • Set All Clearance To: Set all class combinations clearance values as the given value.
    • Keep other Values While Adding new Classes Combination: Even if adding new class combinations, keep previous setup clearance values.
    • Hide Unselected Item on Display: At the table, hide all unselected class combinations.
    • Recognize as pass when the clearance between objects is zero, unless they are overlapped.
  • Exception Option: Here, PollEx DFM provides some void-checking options.
    • Except for SMD pins, not having Metal Mask: For a SMD components pin that doesn’t have metal mask data, PollEx DFM skips checking it.
    • Except for components, having same properties: This is also a void-checking option. PollEx DFM doesn’t check for components having the same specified properties.
      • Property: Use the button to select property.
      • Value: Selected property contents.
    • Except for components, having different Property Values: This is also a void-checking option. PollEx DFM doesn’t check for components that have different specified properties.
      • Property: Use the button to select property.
    • Except for overlapped components with selected at reverse side: This is another void-checking option. PollEx DFM doesn’t check for components that have different specified properties.
      Figure 1.


      • Select: Select a component group from the list.
      • Area: Select a measurement base that will be used when PollEx DFM is used to calculate the component occupying area.