
TP Integrador
Amalia-O/TDCE
FIUBA - Electrónica - Taller de Diseño de Circuitos Electrónicos - Trabajo Integrador

The 2SB631 is a bipolar made by ISC in a TO-126 package with 3 pins. TO-126 Bipolar (BJT) ROHS.
PCBKit's library has its KiCad symbol (Transistor_BJT:2SB631, from KiCad's library) and its footprint (Package_TO_SOT_THT:TO-126-3_Vertical, from KiCad's library), ready for a KiCad board. JLCPCB lists it (part C2983956). 1 open-source board in 1 repository on GitHub use it.
| Pin | Name | Type |
|---|---|---|
| 1 | E | Passive |
| 2 | C | Passive |
| 3 | B | Input |

Amalia-O/TDCE
FIUBA - Electrónica - Taller de Diseño de Circuitos Electrónicos - Trabajo Integrador
<iframe src="https://pcbkit.io/embed/parts/isc/2SB631" title="2SB631 in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe><img src="https://pcbkit.io/embed/parts/isc/2SB631.jpg" alt="2SB631" width="1200" height="900">[](https://pcbkit.io/parts/isc/2SB631)Yes. The symbol is Transistor_BJT:2SB631 and the footprint Package_TO_SOT_THT:TO-126-3_Vertical, both drawn on this page. PCBKit places them on a board for you when you design with it.
TO-126, with 3 pins. Its footprint is drawn on this page.
JLCPCB lists it as part C2983956, with 0 in stock; the sellers' links on this page open their listings.
Parts like it in the library: the BD139 by STMicroelectronics, the BD140 by STMicroelectronics, the BD139-16 by STMicroelectronics and the BD139(RANGE:100-250) 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.