2 layers49 × 49 mm

Texas Instruments
The LMT87 is an uncategorised made by Texas Instruments with 5 pins.
PCBKit's library has its KiCad symbol (Celestial_Sensor_Temperature:TI LMT87, from Altium's library), ready for a KiCad board. 1 open-source board in 1 repository on GitHub use it.
The library has no footprint for this part yet.
| Pin | Name | Type |
|---|---|---|
| 1 | VDD | Passive |
| 2 | GND | Passive |
| 3 | OUT | Passive |
| 4 | VDD | Passive |
| 5 | VDD | Passive |

Yes. The symbol is Celestial_Sensor_Temperature:TI LMT87, both drawn on this page. PCBKit places them on a board for you when you design with it.
1 board in 1 repository on GitHub; the most starred are listed on this page, with their KiCad files.