If the CAD part you need is not yet available on SnapEDA, you can request it using our InstaPart service where you can get any 2D or 3D model made within 24-hours for $29.
Additionally, if available, you can use our InstaBuild tool to generate the symbol instantly. Simply follow the instructions in the InstaBuild Wizard to automatically build the symbol. The symbol will be connected to an IPC-compliant footprint and will be ready to download for all formats we support. InstaBuild is currently available on selected parts.
For more information about the InstaBuild tool, check this article.