2 layers137.2 × 83.8 mm
PWA REV2
PubInv/krake
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215 parts9AGPL-3.0
CH340B
WCH (Nanjing Qinheng Microelectronics)Extended
15mA 200uA 2Mbps 3.3V、5V Transceiver USB 2.0 SOP-16 USB Converters ROHS
- Part id
- wch/CH340B
- Category
- USB Converters
- Package
- SOP-16
- Pins
- 16
- In stock
- 4,363 at JLCPCB (C81010)
- Used on
- 13 open-source boards
Overview
The CH340B is a USB Converter made by WCH (Nanjing Qinheng Microelectronics) in a SOP-16 package with 16 pins. 15mA 200uA 2Mbps 3.3V、5V Transceiver USB 2.0 SOP-16 USB Converters ROHS.
PCBKit's library has its KiCad symbol (EasyEDA_Pro:CH340B, from EasyEDA Pro) and its footprint (Package_SO:SOIC-16_3.9x9.9mm_P1.27mm, from KiCad's library), ready for a KiCad board. 4,363 are in stock at JLCPCB (part C81010). 13 open-source boards in 11 repositories on GitHub use it.
Symbol
Footprint
Pinout
16| Pin | Name | Type |
|---|---|---|
| 1 | GND | Unspecified |
| 2 | TXD | Unspecified |
| 3 | RXD | Unspecified |
| 4 | V3 | Unspecified |
| 5 | UD+ | Unspecified |
| 6 | UD- | Unspecified |
| 7 | RST# | Unspecified |
| 8 | NC. | Unspecified |
| 9 | CTS# | Unspecified |
| 10 | DSR# | Unspecified |
| 11 | RI# | Unspecified |
| 12 | DCD# | Unspecified |
| 13 | DTR# | Unspecified |
| 14 | RTS# | Unspecified |
| 15 | TNOW | Unspecified |
| 16 | VCC | Unspecified |
- 4 layers56 × 56 mm
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116 parts5Apache-2.0 - 2 layers18 × 11 mm
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- 2 layers60 × 60 mm
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51 parts - 2 layers50 × 76.2 mm
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Kicad templates that I use regularly
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brainsmoke/leddriver3d
Renamed from esp32leddriver because it also contains code and PCBs for other MCUs
36 parts11 - 2 layers29 × 29 mm
Module CH340B USB C
Squantor/various_PCB
Various little boards are added here like level shifters, oscillator breakouts and other simple PCB's. Most of these boards are breadboard plugin friendly.
31 parts4MIT
Parts like it
8
CH340C
SOP-16-20℃~+70℃ 2Mbps 3.3V、5V 50uA 7mA Transceiver USB 2.0 SOP-16 USB Converters ROHSWCH (Nanjing Qinheng Microelectronics)USB ConvertersCH340G
SOP-16-40℃~+85℃ 2Mbps 3.3V、5V USB 2.0 USB to UART SOP-16 USB Converters ROHSWCH (Nanjing Qinheng Microelectronics)USB ConvertersSL2.1A
SOP-160℃~+70℃ 120mA 2.5mA 4 4V~5.25V USB 2.0 USB Hub SOP-16 USB HUB Controllers ROHSCoreChipsUSB ConvertersCH343G
SOP-16-40℃~+85℃ 15mA 160uA 3.3V、5V 6Mbps USB 2.0 USB to UART SOP-16 USB Converters ROHSWCH (Nanjing Qinheng Microelectronics)USB ConvertersCH9329
SOP-16-40℃~+85℃ 11mA 12Mbps 3.3V、5V USB 2.0 USB to HID SOP-16 USB Converters ROHSWCH (Nanjing Qinheng Microelectronics)USB ConvertersCH9343G
SOP-1612Mbps 3.3V、5V USB 2.0 SOP-16 USB Converters ROHSWCH (Nanjing Qinheng Microelectronics)USB ConvertersCY7C63310-SXC
SOIC-16SOIC-16-300mil USB Converters ROHSInfineon TechnologiesUSB ConvertersCY7C63801-SXC
SOIC-160℃~+70℃ 4V~5.5V Controller SOIC-16 USB Converters ROHSInfineon TechnologiesUSB Converters
Questions
Is there a KiCad symbol and footprint for the CH340B?
Yes. The symbol is EasyEDA_Pro:CH340B and the footprint Package_SO:SOIC-16_3.9x9.9mm_P1.27mm, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the CH340B?
SOP-16, with 16 pins. Its footprint is drawn on this page.
Where is the CH340B datasheet?
WCH (Nanjing Qinheng Microelectronics) publishes it: the Datasheet link on this page opens it.
Where can I order the CH340B?
JLCPCB lists it as part C81010, with 4,363 in stock; the sellers' links on this page open their listings.
What can replace the CH340B?
Parts like it in the library: the CH340C by WCH (Nanjing Qinheng Microelectronics), the CH340G by WCH (Nanjing Qinheng Microelectronics), the SL2.1A by CoreChips and the CH343G by WCH (Nanjing Qinheng Microelectronics). Check their datasheets: a part that fits the footprint may still differ in its ratings.
Which open-source boards use the CH340B?
13 boards in 11 repositories on GitHub; the most starred are listed on this page, with their KiCad files.