The Yageo RC0402FR-071KL is a fixed resistor with a resistance of 1000 ohm and a tolerance of 1%. It is suitable for surface mount applications and has a max operating temperature of 155 °C.
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.