Bsm100 Gb120 dn2kbsm-IGBT module with anti-parallel freewheeling diode (f.w.d) Bym- diode module100-TC = 80 c rated current GA- one unit module GB. GD- Six-Cell Module GT- Three-Cell Module GP- Seven-Cell Module (Power Integration Module) GAL- Chopper Module (Chopper Diode Close to Collector) GAR- 120- Rated Voltage×10 DL-Low Saturation Voltage Drop DN2-Low Saturation Voltage Drop of High Frequency DLC-Band (EmCon) Diode is similar to other manufacturers. You can send me the specific model and I'll take a look at it for you.