This HEXFET® Power MOSFET utilizes the latest ID = 75A processing techniques to achieve extremely low on-resistance per silicon area. This design are a 175°C junction operating temperature, fast switching speed and improved repetitive avalanche rating.
The 2SK2003, 2SK-2003, 2003 is a 600V 4A 40W N-Channel Power MOSFET, TO-220F Package, High Speed Switching Low On-Resistance No Secondary Breakdown Low Driving Power High Voltage - VGS = ± 30V
The LTC3780 is a DC-DC-Auto-Up & Down-Voltage-Regulator-5-32V-to-1-24V-DC-Adjustable-Converter. My interest in this DC-DC switcher is to operate 19VDC laptops/notebooks and LCD TVs from 12V batteries/solar.
The DS3231SN is a low-cost, extremely accurate I²C real-time clock (RTC) with an integrated temperature-compensated crystal oscillator (TCXO) and crystal. The device incorporates a battery input, and maintains accurate timekeeping.