transistor-models

# Transistor Models Skill — Complete PTM Library > **Important — do not modify skill files during normal use.** > When using models, **copy** the required `.lib` files into the user's project > directory (outside `.claude/`). Do not modify or delete files inside the > skill's `assets/models/` directory. Only update the skill's internal files > when the user explicitly asks to refresh the model library. **Source:** All model files are from [PTM — Arizona State University (ptm.asu.edu)](https://ptm.asu.edu), free for academic research. **Citations:** - Bulk CMOS nodes: W. Zhao and Y. Cao, "New Generation of Predictive Technology Model for Sub-45 nm Early Design Exploration," *IEEE Trans. Electron Devices*, vol. 53, no. 11, pp. 2816–2823, Nov. 2006. doi: 10.1109/TED.2006.884077 - PTM-MG FinFET nodes: S. Sinha, G. Yeric, V. Chandra, B. Cline and Y. Cao, "Exploring sub-20nm FinFET design with Predictive Technology Models," *DAC 2012*, pp. 283–288. doi: 10.1145/2228360.2228414 --- ## Directory Structure ``` assets/models/ ├── bulk_cmos/ — Bulk CMOS (BSIM3v3 / BSIM4) │ ├── ptm180.lib — 180nm conventional │ ├── ptm130.lib — 130nm conventional │ ├── ptm90.lib — 90nm conventional │ ├── ptm65.lib — 65nm conventional │ ├── ptm45hp.lib — 45nm HP │ ├── ptm45lp.lib — 45nm LP │ ├── ptm32hp.lib — 32nm HP │ ├── ptm32lp.lib — 32nm LP │ ├── ptm22hp.lib — 22nm HP │ └── ptm22lp.li...