NPN; Configuration: SINGLE; Surface Mount: NO; Nominal Transition Frequency (fT): 300 MHz; Maximum Power Dissipation (Abs): .5 W; Maximum Collector Current (IC): .6 A;
SBAV99LT1G by Onsemi is a rectifier diode with a max repetitive peak reverse voltage of 100V. It has a small outline package style and a fast max reverse recovery time of 0.006 us. It is commonly used in applications requiring low power dissipation and high operating temperatures.
NE555DR by Texas Instruments is an Analog Waveform Generation IC with 8 terminals, operating voltage of 5V, and power supplies ranging from 5-15V. It is a versatile component for pulse generation applications due to its small outline package and commercial temperature grade suitability.