Overview
The 120N03 is a MOSFET made by GOODWORK in a TO-252 package with 3 pins.
PCBKit's library has its footprint (EasyEDA_Cloud:TO-252-3_L6.5-W5.9-P4.60-LS10.0-BL, from EasyEDA), ready for a KiCad board. 546 are in stock at JLCPCB (part C22470952).
Symbol
The library has no symbol for this part yet.
Footprint
Questions
Is there a KiCad symbol and footprint for the 120N03?
Yes. the footprint EasyEDA_Cloud:TO-252-3_L6.5-W5.9-P4.60-LS10.0-BL, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the 120N03?
TO-252, with 3 pins. Its footprint is drawn on this page.
Where is the 120N03 datasheet?
GOODWORK publishes it: the Datasheet link on this page opens it.
Where can I order the 120N03?
JLCPCB lists it as part C22470952, with 546 in stock; the sellers' links on this page open their listings.