IT(RSM) (TC=85°C): 10A. It's M: 100A. Housing: TO-220. Housing (according to data sheet): TO-220AB. VDRM: 600V. Function: TRIAC, Snubberless Gate. Production date: 8X201331, 42X201442. Igt (max): 50mA. Igt (Type): 50mA. Ih (max): 50mA. Ih (Type): 50mA. Note: 2500V insulation. Number of terminals: 3. RoHS: yes. Spec info: Itsm--t=20ms 100A, t=16.7ms 105A. Assembly/installation: PCB through-hole mounting. Operating temperature: -40...+125°C