Parent page: PCB Design Objects
A pad is a primitive design object. Pads are used for fixing the component to the board and for creating the interconnection points from the component pins to the routing on the board. Pads can exist on a single layer, for example, as a Surface Mount Device pad, or they can be a three-dimensional through-hole pad, having a barrel-shaped body in the Z-plane (vertical) with a flat area on each (horizontal) copper layer. The barrel-shaped body of the pad is formed when the board is drilled and through-plated during fabrication. In the X and Y planes, pads can have a circular, rectangular, octagonal, or rounded rectangular shape. Pads can be used individually as free pads in a design, or more typically, they are used in the PCB Library editor, where they are incorporated with other primitives into component footprints.
Pads are available for placement in both the PCB and the PCB Library editors in one of the following ways:
After launching the command, the cursor will change to a crosshair and you will enter pad placement mode.
Additional actions that can be performed during placement are:
Pads cannot have their properties modified graphically other than their location.
The following methods of non-graphical editing are available.
Properties page: Pad Properties
This method of editing uses the associated Pad dialog mode and Properties panel to modify the properties of a Pad object.
During placement, the Pad mode of the Properties panel can be accessed by pressing the Tab key. Once the Pad is placed, all options appear.
After placement, the Pad dialog can be accessed by:
After placement, the Pad mode of the Properties panel can be accessed in one of the following ways:
The Properties panel supports multiple object editing, where the property settings that are identical in all currently selected objects may be modified. When multiples of the same object type are selected manually, via the Find Similar Objects dialog or through a Filter or List panel, a Properties panel field entry that is not shown as an asterisk (
*) may be edited for all selected objects.
A PCB List panel allows you to display design objects from one or more documents in tabular format, enabling quick inspection and modification of object attributes. Used in conjunction with appropriate filtering, by using the PCB Filter panel, or the Find Similar Objects dialog, it enables the display of just those objects falling under the scope of the active filter – allowing you to target and edit multiple design objects with greater accuracy and efficiency.