KLC S4.5

Pins not connected on the footprint may be omitted from the symbol

Often a component has pins that are not physically connected, and in such cases, unconnected pins may be omitted from the schematic symbol.

  1. Pins may only be omitted if they are never to be connected under any circumstances

  2. If pins are designated NC but the datasheet specifies that these must be pulled to ground or otherwise connected to a specific net, then these must be shown on the schematic symbol

  3. If the pin-count in the schematic does not match the pad-count on the footprint, the footprint filter must include the pad-count of the footprint (see also requirements for footprint filters)

    • SOT?23?5

    • SOIC?8