The HA17555 is a designed for accurate time delays or oscillations. It provides both of trigger terminal and reset terminal in order to enable a wide scope of application including Mono Multi Vibrator and Astable Multi Vibrator.
The S8050 is a low voltage high current small signal NPN transistor, designed for Class B push-pull audio amplifier and general purpose applications. S8050 0.5A/40V NPN Transistor TO-92.
The FS10KM-06 is 60V 10A TO-220F Package High-speed Switching Power MOSFET. Drive Voltage 4V VDSS 100V rDS(ON) (max) 10A Integrated Fast Recovery Diode.