
Nc1
nietamten/VoltageConverterForSolar
NCP1034 buck with regulated output voltage, output current, minimum input voltage

The BD911 is a bipolar made by SPTECH in a TO-220C package with 3 pins. -65℃~+150℃ 1 NPN 100V 15A 250 3MHz 3V 500uA 5V 90W NPN Standalone TO-220C Bipolar (BJT) ROHS.
PCBKit's library has its KiCad symbol (Transistor_BJT:BD911, from KiCad's library) and its footprint (Package_TO_SOT_THT:TO-220-3_Vertical, from KiCad's library), ready for a KiCad board. 80 are in stock at JLCPCB (part C2907609). 5 open-source boards in 5 repositories on GitHub use it.
| Pin | Name | Type |
|---|---|---|
| 1 | B | Input |
| 2 | C | Passive |
| 3 | E | Passive |

nietamten/VoltageConverterForSolar
NCP1034 buck with regulated output voltage, output current, minimum input voltage




<iframe src="https://pcbkit.io/embed/parts/sptech/BD911" title="BD911 in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe><img src="https://pcbkit.io/embed/parts/sptech/BD911.jpg" alt="BD911" width="1200" height="900">[](https://pcbkit.io/parts/sptech/BD911)Yes. The symbol is Transistor_BJT:BD911 and the footprint Package_TO_SOT_THT:TO-220-3_Vertical, both drawn on this page. PCBKit places them on a board for you when you design with it.
TO-220C, with 3 pins. Its footprint is drawn on this page.
SPTECH publishes it: the Datasheet link on this page opens it.
JLCPCB lists it as part C2907609, with 80 in stock; the sellers' links on this page open their listings.
Parts like it in the library: the JMSH1509AC-U by Jiangsu JieJie Microelectronics, the BD912 by SPTECH, the BD911 by STMicroelectronics and the BD912 by STMicroelectronics. Check their datasheets: a part that fits the footprint may still differ in its ratings.
5 boards in 5 repositories on GitHub; the most starred are listed on this page, with their KiCad files.