
NMEA0183Adapter-7.1
rolandvs/ais_transponder
A real, functioning low-power AIS transponder (class B)
E-SwitchExtended
The LC1258EENP is a keylock Switche made by E-Switch in a 插件 package with 5 pins.
PCBKit's library has its footprint (EasyEDA_Cloud:SW-TH_L22.0-W5.0-P2.50_LC1258EENP, from EasyEDA), ready for a KiCad board. JLCPCB lists it (part C5750508). 1 open-source board in 1 repository on GitHub use it.
The library has no symbol for this part yet.

rolandvs/ais_transponder
A real, functioning low-power AIS transponder (class B)
Yes. the footprint EasyEDA_Cloud:SW-TH_L22.0-W5.0-P2.50_LC1258EENP, both drawn on this page. PCBKit places them on a board for you when you design with it.
插件, with 5 pins. Its footprint is drawn on this page.
E-Switch publishes it: the Datasheet link on this page opens it.
JLCPCB lists it as part C5750508, 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.