You can find the necessary files on specialized electronics communities and library repositories: SnapMagic (formerly SnapEDA): Provides the SG3524N Symbol, Footprint, and 3D Model specifically for Proteus and other CAD tools. The Engineering Projects (TEP):
Q: Why is the SG3524 library not included in Proteus? A: The SG3524 library is not included in Proteus by default because Proteus has a limited library of components, and the SG3524 IC is not a widely used component. sg3524 proteus library download
Since some user-created libraries do not include a datasheet diagram or have non-standard pin numbering, here is the pinout for the SG3524 (DIP-16 package) to help you wire the simulation: You can find the necessary files on specialized