This document provides a device modeling report for a Motorola MCR225-8FP thyristor. It includes: 1) Details of the thyristor components and manufacturer. 2) Descriptions of the diode, IG-VT, ITM-VTM, holding, and switching time characteristics along with the simulation circuits and comparison of simulated results to measurements. 3) Percent error calculations show good agreement between simulation and measurement across all characteristics within 2.5% error.