Comparison page

CH340G vs CP2102

Side-by-side selection notes for specs, ecosystem readiness, known issues, and data confidence. This page is generated from structured component fields instead of a hand-written article.

CH340G

Projects needing USB UART and Low cost with a commonly available communication part.

CP2102

Projects needing USB UART and Reliable with a commonly available communication part.

Specification Matrix

DimensionCH340G CP2102

CategoryCommunicationCommunication

MakerWCHSilicon Labs

CoreNot specifiedNot specified

ClockNot specifiedNot specified

WirelessNot specifiedNot specified

Voltage3.3V3.3V

LibrariesNeeds verificationNeeds verification

Price$0.20 - $0.60$0.80 - $2.00

Known Tradeoffs

CH340G

Breakout boards may use different pin labels or regulator choices
Clone modules can differ from the original datasheet part

CP2102

Breakout boards may use different pin labels or regulator choices
Clone modules can differ from the original datasheet part

Open Individual Model Pages

CH340G

WCH

USB-to-UART bridge chip used on many low-cost Arduino-compatible and ESP development boards.

China-madeCommunication86% confidence

CP2102

Silicon Labs

USB-to-UART bridge widely used in development boards and debug adapters.

China-madeCommunication86% confidence