Chapter 1: Analog Parts Library The Analog Parts Library consists of nonlinear models representing 4,186devices supplied for use in linear and nonlinear simulations up to 10MHz. Developed using standard SPICE models, the Analog Parts Library is well suited for use in lower-frequency RF and IC design applications. The devices include diodes, low and medium power BJTs and JFETs, as well as power MOSFETs from many popular vendors. At higher frequencies where model accurate is more critical, the use of HP EEsof’s measurement-based BJT, MOSFET, or MESFET models and libraries or measured device data is recommended.