Searching for an can be frustrating because, while LTspice provides the schematic symbol, it does not include a built-in simulation model for Silicon Controlled Rectifiers (SCRs) or thyristors. To simulate these components, you must find a third-party model file—usually a .lib or .sub file—and link it to your schematic.
Since LTspice doesn't provide them natively, you can source models from manufacturer websites or community repositories: scr ltspice model download
This guide outlines where to find reliable SCR models and the exact steps to integrate them into your LTspice simulations. Where to Download SCR LTspice Models Searching for an can be frustrating because, while
Check their product pages for specific SCR part numbers (e.g., 2N6504 or C106) to find downloadable .lib files. while LTspice provides the schematic symbol