
OpenPSU
mrkindustries/openPSU
An open source linear power supply unit for hobbyists and professionals

The BCP54 is a bipolar made by Shikues in a SOT-223 package with 4 pins. -65℃~+150℃ 1 NPN 1.33W 100nA 130MHz 1A 45V 500mV 5V 63 NPN SOT-223 Bipolar (BJT) ROHS.
PCBKit's library has its KiCad symbol (Pinmap_Generic:Q_NPN_1B_2C_3E_4C, from PCBKit's generic symbols) and its footprint (Package_TO_SOT_SMD:SOT-223, from KiCad's library), ready for a KiCad board. 13,327 are in stock at JLCPCB (part C193030). 1 open-source board in 1 repository on GitHub use it.
| Pin | Name | Type |
|---|---|---|
| 1 | B | Input |
| 2 | C | Passive |
| 3 | E | Passive |
| 4 | C | Passive |

mrkindustries/openPSU
An open source linear power supply unit for hobbyists and professionals
<iframe src="https://pcbkit.io/embed/parts/shikues/BCP54" title="BCP54 in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe><img src="https://pcbkit.io/embed/parts/shikues/BCP54.jpg" alt="BCP54" width="1200" height="900">[](https://pcbkit.io/parts/shikues/BCP54)Yes. The symbol is Pinmap_Generic:Q_NPN_1B_2C_3E_4C and the footprint Package_TO_SOT_SMD:SOT-223, both drawn on this page. PCBKit places them on a board for you when you design with it.
SOT-223, with 4 pins. Its footprint is drawn on this page.
Shikues publishes it: the Datasheet link on this page opens it.
JLCPCB lists it as part C193030, with 13,327 in stock; the sellers' links on this page open their listings.
Parts like it in the library: the BCP56 by HXY MOSFET, the BCP56-16,115 by Nexperia, the BCP53-16 by Jiangsu Changjing Electronics Technology (CJ) and the BCP56 by Jiangsu Changjing Electronics Technology (CJ). Check their datasheets: a part that fits the footprint may still differ in its ratings.
1 board in 1 repository on GitHub; the most starred are listed on this page, with their KiCad files.