BUY 2N3004 https://www.utsource.net/itm/p/1913931.html
Silicon Controlled Rectifier
2N3004 is a NPN silicon transistor manufactured by Boca Semiconductor Inc. It is a general-purpose transistor that can be used for switching and amplifier applications. Description: The 2N3004 is a NPN silicon transistor with a maximum collector current of 500mA and a maximum collector-emitter voltage of 40V. It has a maximum power dissipation of 625mW and a maximum transition frequency of 100MHz. Features: Low collector-emitter saturation voltage High current gain Low noise High frequency operation Applications: Audio amplifiers Switching circuits Motor control circuits High frequency amplifiers (For reference only)