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CH2003K on a board, in 3D

CH2003K

WCH (Nanjing Qinheng Microelectronics)

SOT-23-6 DC-DC Converters ROHS

Extended
JLCPCBLCSCwch/CH2003K
Category
DC DC Converters
Package
SOT-23-6
Pins
6

Overview

The CH2003K is a DC DC Converter made by WCH (Nanjing Qinheng Microelectronics) in a SOT-23-6 package with 6 pins. SOT-23-6 DC-DC Converters ROHS.

PCBKit's library has its footprint (Package_TO_SOT_SMD:SOT-23-6, from KiCad's library), ready for a KiCad board. 3,647 are in stock at JLCPCB (part C55031569). 3 open-source boards in 2 repositories on GitHub use it.

Symbol

The library has no symbol for this part yet.

Footprint

123456
Package_TO_SOT_SMD:SOT-23-6From KiCad's library

Parameters

11
Frequency - Switching
1.5MHz
Function
Step-down type
Number of Outputs
1
Operating Temperature
-40℃~+85℃
Output Current
800mA
Output Type
Adjustable
Quiescent Current
280uA
Switch tube (built-in/external)
Built-in
Synchronous Rectifier
Yes
Topology
Buck
Voltage - Supply
2.5V~5.5V

Order codes

1

Open-source boards using it

All 3
  • 2 layers58 × 56 mmCH32L103C8T6-R0, the printed circuit board in 3D

    CH32L103C8T6-R0

    ch32-riscv-ug/CH32L103

    Choose a part Documents Pin maps Pin viewer Errata Examples Address map

    55 parts2
  • 2 layers61 × 52 mmCH32X035C R0, the printed circuit board in 3D

    CH32X035C R0

    openwch/ch32x035

    32-bit RISC-V MCU CH32X035 built-in USB PD PHY

    40 parts86
  • 2 layers47 × 45 mmCH32X035F8U R0, the printed circuit board in 3D

    CH32X035F8U R0

    openwch/ch32x035

    32-bit RISC-V MCU CH32X035 built-in USB PD PHY

    39 parts86

Show this part on your page

A live frame, for any web page
<iframe src="https://pcbkit.io/embed/parts/wch/CH2003K" title="CH2003K 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/CH2003K.jpg" alt="CH2003K" width="1200" height="900">
A picture that opens the part, for a README
[![CH2003K](https://pcbkit.io/embed/parts/wch/CH2003K.jpg?size=s)](https://pcbkit.io/parts/wch/CH2003K)

Questions

Is there a KiCad symbol and footprint for the CH2003K?

Yes. the footprint Package_TO_SOT_SMD:SOT-23-6, both drawn on this page. PCBKit places them on a board for you when you design with it.

What package is the CH2003K?

SOT-23-6, with 6 pins. Its footprint is drawn on this page.

Where can I order the CH2003K?

JLCPCB lists it as part C55031569, with 3,647 in stock; the sellers' links on this page open their listings.

What can replace the CH2003K?

Parts like it in the library: the MT3608 by 西安航天民芯, the ETA1039S2G by etasolution, the RY9121E by RYCHIP Semiconductor Inc. and the TMI3255S by TMI. Check their datasheets: a part that fits the footprint may still differ in its ratings.

Which open-source boards use the CH2003K?

3 boards in 2 repositories on GitHub; the most starred are listed on this page, with their KiCad files.

Parts like it

8