BUY STR2012 https://www.utsource.net/itm/p/1163825.html
Switching TypeChopper * Self Oscillation Type
STR2012 is a SIP-5 package power transistor manufactured by Sanken. It is a NPN transistor with a maximum collector-emitter voltage of 600V and a maximum collector current of 12A. It is designed for use in switching applications such as motor control, power supplies, and lighting control. It has a high breakdown voltage and low saturation voltage, making it suitable for high-power applications. It also has a high frequency operation capability, making it suitable for high-speed switching applications. (For reference only)