
Thermostat
sensei-hacker/open-smart-thermostat
A 24 VAC HVAC thermostat board. A Seeed XIAO RP2040 handles temperature control and switches the HVAC wires through optically isolated triacs. An M5Stack Dial provides the user interface.

The P6KE47CA is an ESD And Surge Protection made by RUILON in a DO-15 package with 2 pins. -55℃~+150℃ 1uA 40.2V 49.4V 600W@10/1000us 64.8V 9.3A@10/1000us Bidirectional TVS DO-15 ESD and Surge Protection (TVS/ESD) ROHS.
PCBKit's library has its KiCad symbol (Device:D_TVS, from KiCad's library) and its footprint (ICs And Semiconductors THD:DO-15, from CERN's library), ready for a KiCad board. 277 are in stock at JLCPCB (part C8929). 1 open-source board in 1 repository on GitHub use it.
| Pin | Name | Type |
|---|---|---|
| 1 | A1 | Passive |
| 2 | A2 | Passive |

sensei-hacker/open-smart-thermostat
A 24 VAC HVAC thermostat board. A Seeed XIAO RP2040 handles temperature control and switches the HVAC wires through optically isolated triacs. An M5Stack Dial provides the user interface.
<iframe src="https://pcbkit.io/embed/parts/ruilon/P6KE47CA" title="P6KE47CA in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe><img src="https://pcbkit.io/embed/parts/ruilon/P6KE47CA.jpg" alt="P6KE47CA" width="1200" height="900">[](https://pcbkit.io/parts/ruilon/P6KE47CA)Yes. The symbol is Device:D_TVS and the footprint ICs And Semiconductors THD:DO-15, both drawn on this page. PCBKit places them on a board for you when you design with it.
DO-15, with 2 pins. Its footprint is drawn on this page.
RUILON publishes it: the Datasheet link on this page opens it.
JLCPCB lists it as part C8929, with 277 in stock; the sellers' links on this page open their listings.
Parts like it in the library: the P6KE47CA by DOWO, the P6KE47CA by LGE, the P6KE47CA by Littelfuse and the P6KE47CA by Liown. 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.