Do you have its proteus library?

Hello Talha

Thank you for reaching out. :)

You can download the Proteus library for IL300 directly from SnapMagic.
https://www.snapeda.com/parts/IL300/Vishay+Semiconductor+Opto+Division/view-part/

After downloading, you can import it into Proteus using these guides:
https://support.snapmagic.com/en/articles/2651514-how-to-import-into-proteus
https://support.snapmagic.com/en/articles/3758194-how-to-import-a-3d-model-in-proteus

At the moment, our Proteus models are intended for schematic and PCB design and are not guaranteed to support simulation. If you would like to try, you can open the component properties and enable Attach Hierarchy Module. This works in some cases, but it may still show minor errors and may not work for every application.
https://support.snapmagic.com/en/articles/8217196-how-to-fix-proteus-simulation-error-of-no-model-specified

Please let me know if this helps. If you have any other questions, feel free to reach out anytime and I will be happy to assist.

Best Regards
Amina