1N5819HW-7-F by Diodes Inc. is a Schottky rectifier diode with 40V reverse test voltage, 1A output current, and 0.75V forward voltage. It's a surface mount device in a small outline package ideal for efficiency applications at temperatures ranging from -65 to 125°C.
ATMEGA328P-AU by Microchip: 8-bit RISC CPU, 20 MHz clock, 23 I/O lines. Ideal for industrial applications with SPI, TWI, USART connectivity and low power mode. Features include 2048 RAM bytes, 1024 EEPROM size, and 16384 ROM words.
Diodes Inc. BSS84-7-F is a P-channel FET with 50V DS breakdown voltage, 0.13A max drain current, and 10 ohm RDS(on). Ideal for switching applications, it features a single configuration with built-in diode in a small outline package. Operating in enhancement mode at up to 150°C, it has Gull Wing terminals and matte tin finish.