: Texas Instruments offers a fully featured version of PSpice at no cost. It includes a massive library of TI models and has no circuit size or complexity limitations when using the supplied library.
: While an older "legacy" version, the 9.1 Student Version is a classic free tool often used for educational purposes. It is a smaller download (approx. 28 MB) but may have stability issues on modern Windows systems past XP. Top Free Alternatives PSpice-Free-Download-Full-Version-Crack
If you need high-performance circuit simulation without professional licensing fees, consider these widely-used alternatives: : Texas Instruments offers a fully featured version