Altium NEXUS Documentation


Created: August 2, 2022 | Updated: August 2, 2022
This documentation page references Altium NEXUS/NEXUS Client (part of the deployed NEXUS solution), which has been discontinued. All your PCB design, data management and collaboration needs can now be delivered by Altium Designer (with Altium Designer Enterprise Subscription) and a connected Altium 365 Workspace. Check out the FAQs page for more information.

Parent page: PCB Query Functions - Membership Checks


Returns all component objects that are members of the specified Component Class.


InComponentClass(ClassName : String) : Boolean/Boolean_String

As you define the Query expression, a pop-up list of all existing user-defined component classes, by name, is presented.

Example Usage

InComponentClass('TopSideSMD') = True
InComponentClass('TopSideSMD') = 'True'

Returns all component objects that are members of the TopSideSMD Component Class.

Not InComponentClass('BottomSideSMD')
InComponentClass('BottomSideSMD') = False
InComponentClass('BottomSideSMD') = 'False'

Returns all objects except component objects that are members of the BottomSideSMD Component Class.


  1. The single quote characters (') at the start and end of the ClassName string are mandatory.
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