This part is a kind of semiconductor called T40C6J.
Function of this product has TMG40C60J.
Manufacturers : SanRex Corporation
Image and pinout :
Some of the text within the PDF file :
TRIAC(Through Hole / Isolated) TMG40C60J Typical Applications Triac TMG40C60J is designed for full wave AC control applications. It can be used as an ON/OFF function or for phase control operation. TO-3PF ¡Home Appliances : Washing Machines, Vacuum Cleaners, Rice Cookers, Micro Wave Ovens, Hair Dryers, other control applications ¡Industrial Use : SMPS, Copier Machines, Motor Controls, Dimmer, SSR, Heater Controls, Vending Machines, other control applications Features ¡IT(RMS)=40A ¡High Surge Current ¡Lead-Free Package Identifying Code T40C6J Unit mm Maximum Ratings Symbol VDRM IT RMS Tj=25 unless otherwise Item Repetitive Peak Off-State Voltage R.M.S. On-State Current Surge On-State Current I2t for fusing Peak Gate Power Dissipation Average Gate Power Dis [ ... ]