Overview
The BU211 is a bipolar made by SPTECH in a TO-3 package with 4 pins. 12A 300V NPN TO-3 Bipolar (BJT) ROHS.
PCBKit's library has its KiCad symbol (Pinmap_Generic:Q_NPN_1B_2E_3C_4C, from PCBKit's generic symbols) and its footprint (EasyEDA_Cloud:TO-3_L40.0-W26.7-P11.00-TL, from EasyEDA), ready for a KiCad board. JLCPCB lists it (part C2907794).
Symbol
Footprint
Order codes
1- BU211LCSC C2907794
Pinout
4| Pin | Name | Type |
|---|---|---|
| 1 | B | Input |
| 2 | E | Passive |
| 3 | C | Passive |
| 4 | C | Passive |
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<iframe src="https://pcbkit.io/embed/parts/sptech/BU211" title="BU211 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/BU211.jpg" alt="BU211" width="1200" height="900">[](https://pcbkit.io/parts/sptech/BU211)Questions
Is there a KiCad symbol and footprint for the BU211?
Yes. The symbol is Pinmap_Generic:Q_NPN_1B_2E_3C_4C and the footprint EasyEDA_Cloud:TO-3_L40.0-W26.7-P11.00-TL, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the BU211?
TO-3, with 4 pins. Its footprint is drawn on this page.
Where can I order the BU211?
JLCPCB lists it as part C2907794, with 0 in stock; the sellers' links on this page open their listings.
What can replace the BU211?
Parts like it in the library: the 2N5239 by Microchip Technology. Check their datasheets: a part that fits the footprint may still differ in its ratings.
