I found datasheets that contain only: 20N40CL · B20N40 · 20N40C · 0N40CL · MGB20 · B20N4 · 20N40 · 0N40C · N40CL · MGB2 · GB20 · B20N · 20N4 · 0N40 · N40C ...
This Logic Level Insulated Gate Bipolar Transistor (IGBT) features Gate–Emitter ESD protection, Gate–Collector overvoltage.