Comparison page

CH340G vs CH343P

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.

CH343P

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

Specification Matrix

DimensionCH340G CH343P

CategoryCommunicationCommunication

MakerWCHWCH

CoreNot specifiedNot specified

ClockNot specifiedNot specified

WirelessNot specifiedNot specified

Voltage3.3V3.3V

LibrariesNeeds verificationNeeds verification

Price$0.20 - $0.60$0.30 - $0.90

Known Tradeoffs

CH340G

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

CH343P

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

CH343P

WCH

Newer WCH USB-to-UART bridge used in compact modern development boards.

China-madeCommunication78% confidence