LM358DR2G by Onsemi is a dual operational amplifier with 7000uV max input offset voltage and 70dB nominal CMRR. Ideal for applications requiring low bias current such as sensor interfaces, signal conditioning circuits, and audio amplifiers. Package style: Small Outline, Technology: Bipolar, Unity Gain Bandwidth: 1000 kHz.
2N2222A by Texas Instruments is a small signal NPN bipolar junction transistor (BJT) with a max collector-emitter voltage of 40V and a max collector current of 0.8A. It is commonly used for switching applications due to its fast turn on/off times (35ns/285ns) and high transition frequency (300MHz).