Monday, January 25, 2016

MiCS-5524 SMD sensor for Carbon Monoxide, Ethanol, Hydrogen, Ammonia & Methane.

The MiCS-5524 is a sensor whose resistance varies in the presence of small concentrations of a variety of gases, such as Carbon Monoxide (CO), Hydrocarbons and Volatile Organic Compounds (VOCs). This value varies between 2kΩ and 2MΩ approximately, providing high accuracy throughout the output range. The sensor's resistance in air, as well as its sensitivity, can vary between different units, so it is recommended to calibrate the sensor before including it in your application.


  • Gases: Gases: CO, Hydrocarbons, Volatile Organic Compounds such as chlorinated hydrocarbons, aromatic hydrocarbons, aromatic alcohols, aliphatic alcohols, terpenes, glycols, aldehydes, esters and acids
  • Measurement range: 30 to 400 ppm
  • Resistance in air: 100 to 1500 kΩ
  • Sensitivity: 1.8 to 6 (typically 3; ratio between the resistance at 60ppm and 300ppm of CO)
  • Supply voltage: 2.1V to 5V DC
  • Operating temperature: -30 to +85 °C
  • Response time: 30 seconds
  • Average consumption: 32mA