Skip to the content
PCBKitNew board
CH9141, in 3D

CH9141

WCH (Nanjing Qinheng Microelectronics)

-20dBm -40℃~+85℃ 1Mbps 2.4GHz 2.5V~3.6V Bluetooth Supports software reset、Supports RSSI function UART、ADC、GPIO transceiver QFN-28-EP(4x4) RF Transceiver ICs ROHS

Extended
DatasheetJLCPCBLCSCwch/CH9141
Category
RF Transceiver ICs
Package
QFN-28-EP(4x4)
Pins
29

Overview

The CH9141 is a RF Transceiver IC made by WCH (Nanjing Qinheng Microelectronics) in a QFN-28-EP(4x4) package with 29 pins. -20dBm -40℃~+85℃ 1Mbps 2.4GHz 2.5V~3.6V Bluetooth Supports software reset、Supports RSSI function UART、ADC、GPIO transceiver QFN-28-EP(4x4) RF Transceiver ICs ROHS.

PCBKit's library has its KiCad symbol (EasyEDA_Cloud:CH9141, from EasyEDA) and its footprint (EasyEDA_Cloud:QFN-28_L4.0-W4.0-P0.40-BL-EP2.7, from EasyEDA), ready for a KiCad board. JLCPCB lists it (part C2693433).

Symbol

GND29GPIO028GPIO127GPIO226GPIO325SLEEP24RELOAD/LED23VDD_A22ANT21VINTA20X32MI19X32MO18NC17RST#16RXD15TXD14CTS#13RTS#/TNOW12DTR#/BLESTA/GPIO411RI#/GPIO510DSR#/GPIO69DCD#/GPIO78ADC7AT6VCC5VSW4VDD_D3X32KI2X32KO1
EasyEDA_Cloud:CH9141From EasyEDA

Footprint

29
EasyEDA_Cloud:QFN-28_L4.0-W4.0-P0.40-BL-EP2.7From EasyEDA

Parameters

9
Applications
Bluetooth
Data Rate
1Mbps
Features
Supports RSSI function；Supports software reset
Interface
GPIO；ADC；UART
Operating Temperature
-40℃~+85℃
Output Power
-20dBm
Type
transceiver
Typical Application Frequency
2.4GHz
Voltage - Supply
2.5V~3.6V

Order codes

1

Pinout

29
The pins of the CH9141
PinNameType
1X32KOUnspecified
2X32KIUnspecified
3VDD_DUnspecified
4VSWUnspecified
5VCCUnspecified
6ATUnspecified
7ADCUnspecified
8DCD#/GPIO7Unspecified
9DSR#/GPIO6Unspecified
10RI#/GPIO5Unspecified
11DTR#/BLESTA/GPIO4Unspecified
12RTS#/TNOWUnspecified
13CTS#Unspecified
14TXDUnspecified
15RXDUnspecified
16RST#Unspecified
17NCUnspecified
18X32MOUnspecified
19X32MIUnspecified
20VINTAUnspecified
21ANTUnspecified
22VDD_AUnspecified
23RELOAD/LEDUnspecified
24SLEEPUnspecified
25GPIO3Unspecified
26GPIO2Unspecified
27GPIO1Unspecified
28GPIO0Unspecified
29GNDUnspecified

Show this part on your page

A live frame, for any web page
<iframe src="https://pcbkit.io/embed/parts/wch/CH9141" title="CH9141 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/CH9141.jpg" alt="CH9141" width="1200" height="900">
A picture that opens the part, for a README
[![CH9141](https://pcbkit.io/embed/parts/wch/CH9141.jpg?size=s)](https://pcbkit.io/parts/wch/CH9141)

Questions

Is there a KiCad symbol and footprint for the CH9141?

Yes. The symbol is EasyEDA_Cloud:CH9141 and the footprint EasyEDA_Cloud:QFN-28_L4.0-W4.0-P0.40-BL-EP2.7, both drawn on this page. PCBKit places them on a board for you when you design with it.

What package is the CH9141?

QFN-28-EP(4x4), with 29 pins. Its footprint is drawn on this page.

Where is the CH9141 datasheet?

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

Where can I order the CH9141?

JLCPCB lists it as part C2693433, with 0 in stock; the sellers' links on this page open their listings.

What can replace the CH9141?

Parts like it in the library: the CH9140 by WCH (Nanjing Qinheng Microelectronics). Check their datasheets: a part that fits the footprint may still differ in its ratings.

Parts like it

1