First Pin Mark

Check the existence of the components first pin mark and overlapping with other objects.

Generally, the components first pin mark is designed with silkscreen. You can use a different type of first pin mark.

The First Pin Mark dialog contains the following sections:
  • Target Component Definition
    • Component Group: Select the target component from the group list.
    • Exclude Checking for Components which do not have Mark: After searching the first pin mark for specified component group, if PollEx DFM fails to find first pin mark, PollEx DFM will skip checking for those components.
    • First Pin Mark Layer Definition: To get the first mark, define the top and bottom layer where the first pin mark should be designed.
      • Top Mark Layer: Select the top first pin mark layer.
      • Bottom Mark Layer: Select the bottom first pin mark layer.
    • First Pin Mark Shape Definition: Select the shape of the First Pin Mark.

      Allowable polarity mark types in PollEx DFM are as follows: If the following types of polarity marks are detected in the searching area, PollEx DFM recognizes that the component has a polarity mark.



      Figure 1.
  • First Pin Mark Checking
    • Check First Pin Mark with Character String: Upon selecting this option, PollEx DFM searches the first pin mark with a given character string near the first pin mark.
    • Check First Pin Mark within First Pin Area for Board Figure Geometry: If first pin mark is designed with board figure geometry, PollEx DFM searches for the first pin mark within the area near first pin.
      • Searching Distance from First Pin: Set the distance from the first pin.


        Figure 2.
  • First Pin Mark Overlapping Check
    • Overlapping with Silkscreen: Check if the first pin mark is overlapping with another silkscreen.
    • Overlapping with Pad: Check if the first pin mark is overlapping with another component pad.
    • Overlapping with Via Hole: Check if the first pin mark is overlapping with the via hole.
    • Overlapping with Board Figure Hole: Check if the first pin mark is overlapping with the board figure hole.