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CH331A on a board, in 3D

CH331A

WCH (Nanjing Qinheng Microelectronics)

3.3V、5V USB 2.0 SSOP-20-208mil USB Converters ROHS

Extended
DatasheetJLCPCBLCSCwch/CH331A
Category
USB Converters
Package
SSOP-20-208mil
Pins
20

Overview

The CH331A is a USB Converter made by WCH (Nanjing Qinheng Microelectronics) in a SSOP-20-208mil package with 20 pins. 3.3V、5V USB 2.0 SSOP-20-208mil USB Converters ROHS.

PCBKit's library has its KiCad symbol (EasyEDA_Cloud:CH331A, from EasyEDA) and its footprint (Package_SO:SSOP-20_5.3x7.2mm_P0.65mm, from KiCad's library), ready for a KiCad board. 29 are in stock at JLCPCB (part C111670).

Symbol

SOUT1SCLK2NC3RDY4WP#5V36UD+7UD-8GND9XI10XO11VCC12ID113SIN14H4L215SDA16SCL17CS#18ID019LED#20
EasyEDA_Cloud:CH331AFrom EasyEDA

Footprint

1234567891011121314151617181920
Package_SO:SSOP-20_5.3x7.2mm_P0.65mmFrom KiCad's library

Parameters

2
USB Protocol
USB 2.0
Voltage - Supply
3.3V

Order codes

1

Pinout

20
The pins of the CH331A
PinNameType
1SOUTUnspecified
2SCLKUnspecified
3NCUnspecified
4RDYUnspecified
5WP#Unspecified
6V3Unspecified
7UD+Unspecified
8UD-Unspecified
9GNDUnspecified
10XIUnspecified
11XOUnspecified
12VCCUnspecified
13ID1Unspecified
14SINUnspecified
15H4L2Unspecified
16SDAUnspecified
17SCLUnspecified
18CS#Unspecified
19ID0Unspecified
20LED#Unspecified

Show this part on your page

A live frame, for any web page
<iframe src="https://pcbkit.io/embed/parts/wch/CH331A" title="CH331A in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe>
A picture
<img src="https://pcbkit.io/embed/parts/wch/CH331A.jpg" alt="CH331A" width="1200" height="900">
A picture that opens the part, for a README
[![CH331A](https://pcbkit.io/embed/parts/wch/CH331A.jpg?size=s)](https://pcbkit.io/parts/wch/CH331A)

Questions

Is there a KiCad symbol and footprint for the CH331A?

Yes. The symbol is EasyEDA_Cloud:CH331A and the footprint Package_SO:SSOP-20_5.3x7.2mm_P0.65mm, both drawn on this page. PCBKit places them on a board for you when you design with it.

What package is the CH331A?

SSOP-20-208mil, with 20 pins. Its footprint is drawn on this page.

Where is the CH331A datasheet?

WCH (Nanjing Qinheng Microelectronics) publishes it: the Datasheet link on this page opens it.

Where can I order the CH331A?

JLCPCB lists it as part C111670, with 29 in stock; the sellers' links on this page open their listings.

What can replace the CH331A?

Parts like it in the library: the CH376T by WCH (Nanjing Qinheng Microelectronics), the CH341T by WCH (Nanjing Qinheng Microelectronics), the MCP2200-I/SS by Microchip Technology and the CH345T by WCH (Nanjing Qinheng Microelectronics). Check their datasheets: a part that fits the footprint may still differ in its ratings.

Parts like it

8