
Linear supply
anshu-patra/pcb_design
a linear voltage power supply which takes in 220v and 50hz ac as input and converts it into a linera voltage power supply of 5V and 2A stable supply and also contains a foldback short circuit protection
STMicroelectronicsExtended
-65℃~+150℃ 1 NPN 1.2V 10 100V 300uA 3A 40W 5V NPN TO-220 Bipolar (BJT) ROHS
The TIP31C is a bipolar made by STMicroelectronics in a TO-220 package with 3 pins. -65℃~+150℃ 1 NPN 1.2V 10 100V 300uA 3A 40W 5V NPN TO-220 Bipolar (BJT) ROHS.
PCBKit's library has its KiCad symbol (Transistors:NPN B1 C2 E3, from CERN's library) and its footprint (ICs And Semiconductors THD:TO-220-HFLIP, from CERN's library), ready for a KiCad board. 7,463 are in stock at JLCPCB (part C13506). 7 open-source boards in 7 repositories on GitHub use it.
| Pin | Name | Type |
|---|---|---|
| 1 | B | Passive |
| 2 | C | Passive |
| 3 | E | Passive |

anshu-patra/pcb_design
a linear voltage power supply which takes in 220v and 50hz ac as input and converts it into a linera voltage power supply of 5V and 2A stable supply and also contains a foldback short circuit protection

cesar191/diseno_PCB
diseño de una pcb de control el cual puede tener diferentes estructuras

jodhsinghnahal/piezo_matlab
Simulation, circuit and PCB design repository for investigating piezoelectric energy harvesting (PEH) interfaces under conventional vibration excitation and underwater acoustic excitation.

norisionut12/12V-Class-AB-Audio-Amplifier
Discrete 12V single-supply Class AB audio amplifier with active-low relay speaker protection and linear voltage regulator.

nxvxr14/control-celda-fts-mecatronica-UNAB
IMPLEMENTACIÓN DE UN SISTEMA PARA CONTROL DE SUPERVISIÓN Y ADQUISICIÓN DE DATOS DE LA CELDA MECATRÓNICA DE FISCHERTECHNIK DEL LABORATORIO DE AUTOMATIZACIÓN UTILIZANDO HARDWARE Y SOFTWARE LIBRE

settinger/LED-command-center
KiCad repo for my first ever panel-mount project

Yes. The symbol is Transistors:NPN B1 C2 E3 and the footprint ICs And Semiconductors THD:TO-220-HFLIP, both drawn on this page. PCBKit places them on a board for you when you design with it.
TO-220, with 3 pins. Its footprint is drawn on this page.
STMicroelectronics publishes it: the Datasheet link on this page opens it.
JLCPCB lists it as part C13506, with 7,463 in stock; the sellers' links on this page open their listings.
Parts like it in the library: the TIP31C by JSMSEMI, the TIP31C by onsemi and the TIP31C by SPTECH. Check their datasheets: a part that fits the footprint may still differ in its ratings.
7 boards in 7 repositories on GitHub; the most starred are listed on this page, with their KiCad files.