10pcs WCH IC Chips – CH32V003 CH340 CH343 CH395 Microcontrollers

10-Pack WCH Microcontroller & USB Bridge ICs — CH32V003, CH340, CH343, CH334, CH395 Series

Stock up on essential WCH integrated circuits with this convenient 10-piece pack. Whether you're prototyping a new embedded system, repairing a USB interface board, or building out a production run, this assortment covers the most popular WCH MCU and USB-serial bridge chips in one order. Made in Mainland China.

Chips Available in This Listing

• CH32V003F4U6 — RISC-V general-purpose microcontroller, QFN-20 package
• CH32V003F4P6 — RISC-V general-purpose microcontroller, SOP-16 package
• CH32X035F8U6 — RISC-V MCU with USB PD support, QFN-20 package
• CH334P — USB 2.0 Hi-Speed 4-port hub controller
• CH334R — USB 2.0 Hi-Speed 4-port hub controller (alternate package)
• CH340C — USB-to-serial UART bridge with built-in crystal
• CH340E — Ultra-compact USB-to-serial UART bridge, MSOP-10
• CH340T — USB-to-serial/IrDA bridge, SSOP-20
• CH343P — USB high-speed serial UART bridge, up to 6 Mbps
• CH343K — USB high-speed serial UART bridge, QFN package
• CH395Q — SPI/UART Ethernet controller with TCP/IP stack

Why Choose This IC Assortment?

• Broad Compatibility: WCH chips are widely supported by open-source toolchains, Arduino-compatible frameworks, and standard OS drivers (Windows, Linux, macOS).
• Cost-Effective Bulk Pricing: Buy 10 pieces at once and reduce per-unit cost — ideal for makers, engineers, and small-batch manufacturers.
• Genuine WCH Silicon: Authentic components with standard operating parameters for reliable performance in your designs.
• General-Purpose Use: Suitable for USB communication, IoT edge nodes, USB hub designs, and Ethernet-connected embedded projects.
• Low Voltage Operation: All chips operate below 50 Vac / 75 Vdc, compliant with EU LVD requirements.

Typical Applications

• USB-to-serial adapters and programmer dongles
• RISC-V embedded development boards
• USB hub expansion hardware
• Ethernet-enabled IoT modules using CH395Q
• DIY electronics prototyping and repair

Specifications

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Frequently Asked Questions

Q: What is the difference between CH340C, CH340E, and CH340T USB-to-serial bridge chips?

A: All three are USB-to-serial UART bridge ICs from WCH, but they differ in package and features. The CH340C (SOP-16) includes a built-in crystal oscillator, eliminating the need for an external crystal. The CH340E (MSOP-10) is the most compact option, ideal for space-constrained PCB designs. The CH340T (SSOP-20) adds IrDA infrared serial support in addition to standard UART, making it suited for legacy IR communication projects.

Q: Are the CH32V003 microcontrollers compatible with Arduino or open-source toolchains?

A: Yes. The CH32V003 series is based on the RISC-V architecture and is supported by the MounRiver Studio IDE as well as community-developed Arduino cores. You can program them using a WCH-LinkE debugger/programmer, making them an accessible and affordable alternative for embedded development projects.

Q: Can I order a mixed pack of different chip models?

A: Yes — this listing offers multiple model options so you can select the specific chip you need in a 10-piece quantity. If you require a customized mixed assortment of different models in one order, please contact us directly and we will be happy to assist.

Q: What operating system drivers are available for CH340 and CH343 chips?

A: WCH provides official drivers for Windows, Linux, and macOS on their website. On Linux, the CH340 series is often supported natively by the kernel without any additional driver installation, making these chips a popular choice for cross-platform USB serial designs.