The 2SK1794, 2SK-1794, K1794, 1794 is a 900V 6A 100W TO-3P Package, N-Channel Power MOSFET Switching Transistors With Freewheeling Diode And High Power MOSFET.
The HA17339A is comparators designed for use in power or control systems. Its operate from a single power-supply voltage over a wide range of voltages, and feature a reduced power-supply current since the power-supply voltage is determined independently.
This relay module is 5V active low. It is a single channel relay interface board, which can be controlled directly by a wide range of microcontrollers such as Arduino, AVR, PIC, ARM, PLC, etc.
The 2SK2837, 2SK-2837, K2837, 2837 is a 500V 20A N Channel Silicon Field Effect Transistor Or MOFET TO-3PN-3 Package. Chopper Regulator, DC−DC Converter and Motor Drive.