This document describes the features and characteristics of the MITSUBISHI fast recovery diode module RM100CA/C1A-XXF, produced in February 1999. It is suitable for high-speed switching and insulated applications, primarily used for free wheeling and welding machines. The module features include: DC current of 100A, repetitive peak reverse voltage of 600/800/1000/1200V, reverse recovery time of 0.8µs, insulated design, and UL recognition.