
Ecvt main board v3
NU-Baja-SAE/hardware
Hardware: KiCad schematics/PCBs, wiring harness, BOM tooling
SMCExtended
-55℃~+125℃ 1 1A 200uA 3.3V 300W 3pF 4V 8V TVS Unidirectional SOT-23-3 ESD and Surge Protection (TVS/ESD) ROHS
The S23LC03 is an ESD And Surge Protection made by SMC in a SOT-23-3 package with 3 pins. -55℃~+125℃ 1 1A 200uA 3.3V 300W 3pF 4V 8V TVS Unidirectional SOT-23-3 ESD and Surge Protection (TVS/ESD) ROHS.
PCBKit's library has its footprint (Package_TO_SOT_SMD:SOT-23-3, from KiCad's library), ready for a KiCad board. JLCPCB lists it (part C3706128). 1 open-source board in 1 repository on GitHub use it.
The library has no symbol for this part yet.

NU-Baja-SAE/hardware
Hardware: KiCad schematics/PCBs, wiring harness, BOM tooling
Yes. the footprint Package_TO_SOT_SMD:SOT-23-3, both drawn on this page. PCBKit places them on a board for you when you design with it.
SOT-23-3, with 3 pins. Its footprint is drawn on this page.
SMC publishes it: the Datasheet link on this page opens it.
JLCPCB lists it as part C3706128, with 0 in stock; the sellers' links on this page open their listings.
Parts like it in the library: the CDSOT23-SM712 by Bourns, the ESDA14V2L by BORN, the AQ05-02HTG by Littelfuse and the ESDA14V2LY by STMicroelectronics. Check their datasheets: a part that fits the footprint may still differ in its ratings.
1 board in 1 repository on GitHub; the most starred are listed on this page, with their KiCad files.