
Ultra DB X51 v1
ExploreEmbedded/8051_DevelopmentBoard
Design files and sample code for 8051 development Ultra Boards

The BC548 is a bipolar made by DDF in a TO-92 package with 3 pins. TO-92 Bipolar (BJT) ROHS.
PCBKit's library has its KiCad symbol (Transistor_BJT:BC548, from KiCad's library) and its footprint (Package_TO_SOT_THT:TO-92_Inline, from KiCad's library), ready for a KiCad board. JLCPCB lists it (part C50229580). 295 open-source boards in 196 repositories on GitHub use it.
| Pin | Name | Type |
|---|---|---|
| 1 | C | Passive |
| 2 | B | Input |
| 3 | E | Passive |

ExploreEmbedded/8051_DevelopmentBoard
Design files and sample code for 8051 development Ultra Boards



DarcyJProjects/touchtone555
An open-source DIY, NE555-based analogue synthesizer - play notes with a stylus


clemarfolly/Microdigital-TK2000
Reprodução da PCB do TK-2000 da Microdigital, clone do Micro-Professor MPF-II

Danjovic/Soda-IDE
8 bit Compact Flash Interface for MSX computers

alvaroalea/all-spectrum-clones
Schematic of a 8bit computer, clone of Sinclair ZX Spectrum
<iframe src="https://pcbkit.io/embed/parts/ddf/BC548" title="BC548 in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe><img src="https://pcbkit.io/embed/parts/ddf/BC548.jpg" alt="BC548" width="1200" height="900">[](https://pcbkit.io/parts/ddf/BC548)Yes. The symbol is Transistor_BJT:BC548 and the footprint Package_TO_SOT_THT:TO-92_Inline, both drawn on this page. PCBKit places them on a board for you when you design with it.
TO-92, with 3 pins. Its footprint is drawn on this page.
DDF publishes it: the Datasheet link on this page opens it.
JLCPCB lists it as part C50229580, with 0 in stock; the sellers' links on this page open their listings.
Parts like it in the library: the 2N3904 by JSMSEMI, the 2N3904BU by onsemi, the PN2222ABU by onsemi and the BC547B by LGE. Check their datasheets: a part that fits the footprint may still differ in its ratings.
295 boards in 196 repositories on GitHub; the most starred are listed on this page, with their KiCad files.