

Overview
The CH412K is an interface Specialized made by WCH (Nanjing Qinheng Microelectronics) in a SOT-363-6 package with 6 pins. -40℃~+125℃ 100nA 100nA 1V~5.5V SOT-363-6 Interface - Specialized ROHS.
PCBKit's library has its KiCad symbol (EasyEDA_Cloud:PRTR5V0U4D,125, from EasyEDA) and its footprint (Package_TO_SOT_SMD:SOT-363_SC-70-6, from KiCad's library), ready for a KiCad board. 2,979 are in stock at JLCPCB (part C89184). 5 open-source boards in 4 repositories on GitHub use it.
Symbol
Footprint
Parameters
4- Operating Temperature
- -40℃~+125℃
- Quiescent Supply Current
- 100nA
- Supply Current
- 100nA
- Voltage - Supply
- 1V~5V
Order codes
1- CH412KLCSC C89184
Pinout
6| Pin | Name | Type |
|---|---|---|
| 1 | IO1 | Unspecified |
| 2 | GND | Unspecified |
| 3 | IO2 | Unspecified |
| 4 | IO3 | Unspecified |
| 5 | VCC | Unspecified |
| 6 | IO4 | Unspecified |
Open-source boards using it
All 5- 4 layers57.4 × 23.9 mm

- 4 layers33 × 11 mm

- 2 layers90 × 55 mm

- 2 layers61 × 52 mm

- 2 layers47 × 45 mm

Show this part on your page
<iframe src="https://pcbkit.io/embed/parts/wch/CH412K" title="CH412K in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe><img src="https://pcbkit.io/embed/parts/wch/CH412K.jpg" alt="CH412K" width="1200" height="900">[](https://pcbkit.io/parts/wch/CH412K)Questions
Is there a KiCad symbol and footprint for the CH412K?
Yes. The symbol is EasyEDA_Cloud:PRTR5V0U4D,125 and the footprint Package_TO_SOT_SMD:SOT-363_SC-70-6, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the CH412K?
SOT-363-6, with 6 pins. Its footprint is drawn on this page.
Where is the CH412K datasheet?
WCH (Nanjing Qinheng Microelectronics) publishes it: the Datasheet link on this page opens it.
Where can I order the CH412K?
JLCPCB lists it as part C89184, with 2,979 in stock; the sellers' links on this page open their listings.
What can replace the CH412K?
Parts like it in the library: the SP7612AEC6-L by SIPEX, the SP7612AEC6-L/TR by SIPEX and the SP7614EC6-L/TR by SIPEX. Check their datasheets: a part that fits the footprint may still differ in its ratings.
Which open-source boards use the CH412K?
5 boards in 4 repositories on GitHub; the most starred are listed on this page, with their KiCad files.