The SMMBT2222ALT1G is an NPN bipolar junction transistor (BJT) manufactured by ON Semiconductor. Here is a detailed introduction to the SMMBT2222ALT1G transistor:
The B240A-13-F is a Schottky diode manufactured by Diodes Inc. This specific diode has a voltage rating of 40V and a current rating of 2A. It is packaged in an SMA (DO-214AC) package