The MJ802G MJ802 802 is a 100V 30A 200W transistor, Use for as an output device in complementary audio amplifiers to 100−Watts music power per channel.
The ESP32-S is a wireless module based on ESP32, supports Wi-Fi and Bluetooth 4.2, with built-in 32Mbit Flash, in the SMD38 package. There are also on board PCB antenna and metal shield.
The 2SC3209 is a NPN Maximum Collector 2W Maximum Collector Base Voltage 300 V Maximum Collector Current 0.2 A Max. Operating Junction Temperature 125 °C Transition Frequency 80 MHz Forward Current Transfer Ratio 60.
The Darlington Bipolar Power Transistor is designed for general-purpose amplifier and low speed switching applications. TIP120, TIP121, TIP122 (NPN); TIP125, TIP126, TIP127 (PNP) are complementary devices.