Parent page: PCB Objects
The component footprint defines the space and connection points needed to mount the physical component on the printed circuit board. It is a group object made up of a collection of simple primitive objects, which could include pads, lines and arcs, as well as other design objects. The pads provide the mounting and connection points for the component pins. Additional design primitives, such as lines and arcs, are often included to define the outline of the component shape on the component overlay (silkscreen) layer.
The component footprint can also include optional 3D body objects, which define the physical space or envelope of the actual component that is mounted on the board. If the physical component has been defined using 3D body objects or imported STEP models, three-dimensional component clearance checking can be performed.
Component footprints are created in the PCB Library Editor by placing suitable design objects to create the shape required to mount and connect the component. The component reference point is the origin of the Library Editor workspace, which can be set in the Library editor to: pin 1, the geometric center, or a user-defined location on the component.
To learn more about footprint creation, refer to Creating the PCB Footprint.
Component footprints are created in the PCB Library editor and placed in the PCB editor. To place a component in the PCB editor:
The process used to locate the required component footprint will depend on the method chosen to perform placement. Once the required footprint has been chosen for placement and is floating on the cursor:
To place from the Libraries panel:
Spirit_Level_Project.PcbLibhas been chosen.
With the part selected in the panel, placement of the component can be made in the following ways:
Graphical component editing is limited to moving, rotating and flipping. When a component is selected in the workspace it is highlighted in the current selection color, as shown in the image below. To graphically manipulate a selected component:
The following methods of non-graphical editing are available:
Properties page: Component Properties Panel
The properties of a Component can be edited in the PCB editor's Properties panel, which allows editing of all item(s) currently selected in the workspace.
During placement, the panel can be accessed by pressing the Tab key.
To access the properties of a placed Component:
If the Properties panel is already active:
The 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.
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