
Regenerative braking
venatarch/regenerative_braking
Recover braking energy from a BLDC motor using bidirectional MOSFET switching.

The LM339DT is a comparator made by STMicroelectronics in a SOIC-14 package with 14 pins. 0℃~+70℃ 1.1mA 1.3us 1.3us 1V~18V、1V~18V 1mV 25nA 2V~36V 36V 5nA DTL、TTL、CMOS、ECL、MOS Four channels SOIC-14 Comparators ROHS.
PCBKit's library has its KiCad symbol (Comparator:LM339, from KiCad's library) and its footprint (Package_SO:SOIC-14_3.9x8.7mm_P1.27mm, from KiCad's library), ready for a KiCad board. 86,385 are in stock at JLCPCB (part C71036). 2 open-source boards in 2 repositories on GitHub use it.
| Pin | Name | Type |
|---|---|---|
| 1 | — | Open collector |
| 2 | — | Open collector |
| 3 | V+ | Power in |
| 4 | - | Input |
| 5 | + | Input |
| 6 | - | Input |
| 7 | + | Input |
| 8 | - | Input |
| 9 | + | Input |
| 10 | - | Input |
| 11 | + | Input |
| 12 | V- | Power in |
| 13 | — | Open collector |
| 14 | — | Open collector |

venatarch/regenerative_braking
Recover braking energy from a BLDC motor using bidirectional MOSFET switching.

misko/prompt2device
The separate vNext PCB skill and orchestrator package is available alongside the reference workflow below; existing projects keep their accepted toolchain until an explicit migration.
<iframe src="https://pcbkit.io/embed/parts/st/LM339DT" title="LM339DT in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe><img src="https://pcbkit.io/embed/parts/st/LM339DT.jpg" alt="LM339DT" width="1200" height="900">[](https://pcbkit.io/parts/st/LM339DT)Yes. The symbol is Comparator:LM339 and the footprint Package_SO:SOIC-14_3.9x8.7mm_P1.27mm, both drawn on this page. PCBKit places them on a board for you when you design with it.
SOIC-14, with 14 pins. Its footprint is drawn on this page.
STMicroelectronics publishes it: the Datasheet link on this page opens it.
JLCPCB lists it as part C71036, with 86,385 in stock; the sellers' links on this page open their listings.
Parts like it in the library: the LM339D by Texas Instruments, the LM239D by Texas Instruments, the LM339 by Jiangsu Changjing Electronics Technology (CJ) and the LM339 by JSMSEMI. Check their datasheets: a part that fits the footprint may still differ in its ratings.
2 boards in 2 repositories on GitHub; the most starred are listed on this page, with their KiCad files.