Specifying Terminals

PartQuest Portal Subscription: Essential or Professional

You use the Terminals page of the Footprint Creator wizard to choose the terminal (pin) type of a custom footprint you are create for a PartQuest Portal part.

The Terminals page is organized into subsections of package terminal characteristics. As you specify options, other options or new subsections may appear in the Terminals page.

The Terminals page enables you to create one or more terminal groups to organize multiple terminals that have a common shape, position, and size.

As you build a package, the right panel displays a top-down, two-dimensional (2D) preview of the package terminals.

Tip

Datasheets vary in how they provide terminal position and dimension information. For example, some datasheets provide nominal values with minimum and maximum values. Other datasheets provide a nominal position with a positive and negative tolerance. You can specify the position and dimensions of terminals using either approach. Nominal is sometimes referred to as typical by some datasheets.

Tip

For more information about a terminal option, click the information icon () to display a cross reference to the section of the JEDEC standard that defines a terminal characteristic or dimension.

Prerequisites

  • You have logged into the PartQuest Portal website with your Siemens account. See Signing In to the PartQuest Portal Application.

  • You have successfully defined the package outline of the footprint in the Package Outline page of the Footprint Creator wizard.

  • You have detailed package information from the part manufacturer.

    Tip

    If a terminal dimension is not found in the datasheet, there is no need for you to provide that dimension in the Footprint Creator wizard. The wizard extrapolates unspecified dimensions from known dimensions.

Procedure

  1. (Optional) From the Terminal Groups Options section of the left panel, specify options for terminal groups.
  2. From the Terminal section of the left panel, choose a terminal type.

    The wizard displays terminal types appropriate for the package outline you selected in the Footprint Creator wizard Package Outline page. For example, the ball terminal appears if you have selected a grid-array package outline.

    If the Additional Terminal Information section appears, choose an option from this section too.

  3. From the Terminal Position section of the left panel, choose a position.

    The wizard displays terminal position options appropriate for the terminal form you selected.

    Depending on the terminal form you selected, the additional terminal position options may appear. For example, a ball terminal provides options for the ball matrix, and number and row/columns. Select the options and enter values from the datasheet.

  4. (Optional) If the Additional Terminal Position Information section appears in the left panel, choose an option from this section.
  5. (Optional) If you selected a C-bend, gull-wing, or J-bend terminal type, the Coplanarity section appears in the left panel. Type the dimension of the coplanarity tolerance zone in the coplanarity field.
  6. From the Terminal Shape section of the left panel, choose a shape.

    The wizard displays terminal shape options appropriate for the terminal form you selected.

    Depending on the terminal shape you selected, the additional terminal shape options may appear. For example, a ball terminal shape provides options for X/Y offset references. You can either skip this step if the terminals are not offset or select the options provided by datasheet.

  7. (Optional) If the Terminal Contact Positions section appears in the left panel, type the minimum, nominal (typical), and maximum contact position values provided in the datasheet.
  8. From the Terminal Dimension (T. Dim) section of the left panel, type dimension values provided in the datasheet.
  9. (Optional) Use terminal groups to organize multiple terminals. Some package designs require you to create multiple terminal groups.

    Perform any of the following:

    If you want to...

    Do the following...

    Create a terminal group

    From the top of the terminal options panel, click the + icon.

    If the current terminal group is complete, the wizard creates a new terminal group. If the current terminal group is incomplete, a popup error message appears that indicates the mandatory options or dimensions that are missing

    Delete a terminal group

    From the top of the terminal options panel, click the down arrow icon () next to the terminal group name, and then select the Delete list item.

    Rename a terminal group

    From the top of the terminal options panel, click the down arrow icon () next to the terminal group name, select the Rename list item, and then type the new name.

    Allow terminal group selections

    If selected, allow terminals of the current terminal group to be selected from the 2D package preview.

    Tip

    You select terminals in the 2D package preview when you choose a package numbering pattern from the wizard Details page.

  10. Click Continue to Details.

    Either the Footprint Creator wizard Details page appears or a popup error message appears that indicates the mandatory terminal dimensions that are missing or have conflicting values. Terminal options with errors appear in red on the Terminals page.

Results

The wizard generates terminals with the characteristics and terminal dimensions that you specified. You are ready to specify the terminal (pin) numbering pattern and manufacturing details of the package