The 2SK2462, 2SK-2462, K2462, 2462 is a 100V 15A 30W N-Channel Field Effect Transistor TO-220NIS Package MOSFET, Its designed for high speed switching applications. Low On-Resistance RDS(on)1 = 80 mΩ MAX. (@ VGS = 10 V, ID = 10A).
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.