ChipScout

Comparison page

INA219 vs MH-Z19B

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.

INA219

Projects needing Current and Voltage with a commonly available sensors part.

MH-Z19B

Projects needing CO2 and NDIR with a commonly available sensors part.

Specification Matrix

DimensionINA219MH-Z19B
CategorySensorsSensors
MakerTexas InstrumentsWinsen
CoreNot specifiedNot specified
ClockNot specifiedNot specified
WirelessNot specifiedNot specified
Voltage3.3V3.3V
LibrariesArduino, MicroPythonArduino
Price$1.50 - $4.00$15.00 - $30.00

Known Tradeoffs

INA219

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

MH-Z19B

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

Open Individual Model Pages

INA219

Texas Instruments

I2C current and bus voltage monitor widely used for power measurement modules.

China-madeSensors86% confidence

MH-Z19B

Winsen

NDIR CO2 sensor module commonly used in indoor air quality projects.

China-madeSensors80% confidence