2 layers81.3 × 35.6 mm

The MD-30 is a circular Connectors & Cable Connector made by CUI with 1 pins.
JLCPCB lists it (part C6300363). 1 open-source board in 1 repository on GitHub use it.
The library has no symbol for this part yet.
The library has no footprint for this part yet.

CUI publishes it: the Datasheet link on this page opens it.
JLCPCB lists it as part C6300363, with 0 in stock; the sellers' links on this page open their listings.
1 board in 1 repository on GitHub; the most starred are listed on this page, with their KiCad files.