BSS138LT3G by Onsemi is a N-CHANNEL FET with a min DS breakdown voltage of 50V. It is used for switching applications and has a max drain current of 0.2A and max drain-source on resistance of 3.5 ohm.
ADJUSTABLE POSITIVE SINGLE OUTPUT STANDARD REGULATOR; No. of Terminals: 3; Terminal Form: THROUGH-HOLE; Operating Temperature (TJ-Min): 0 Cel; No. of Functions: 1; JESD-609 Code: e0;
1N4148WT-7 by Diodes Inc. is a fast recovery rectifier diode with a max reverse recovery time of 0.004 us and a max forward voltage of 1.25 V. It has a package style of small outline, making it suitable for surface mount applications where high-speed switching is required at temperatures ranging from -65 to 150 °C.
DS18B20U+ by Analog Devices is a 12-bit temperature sensor with 1-Wire interface. It operates b/w -55 to 125°C, offering ±0.5°C accuracy. Suitable for applications requiring digital output and surface mounting feature.