Conditioning: plastic tube. Conditioning unit: 50. Function: Phase Control SCR, SAFEIR Series. Igt (max): 45mA. Igt (Type): 20mA. Ih (max): 100mA. Ih (Type): 100mA. IT(AV): 16A. IT(RSM) (TC=85°C): 25A. It's M: 300A. Marking on the case: 25TTS12. Number of terminals: 3. RoHS: yes. Assembly/installation: PCB through-hole mounting. Tgt: 0.9us. Housing: TO-220. Housing (according to data sheet): TO-220AB. Tq: 110us. Operating temperature: -40...+125°C. VDRM: 1200V. Spec info: ITSM--300Ap/10ms