Breaking the size barrier in CO2 sensing

The SCD4x is Sensirion’s next generation miniature CO2 sensor that offers an unmatched price-to-performance ratio. Tape and reel packaging combined with its SMD assembly processing make the SCD4x ideal for high-volume applications.

This sensor builds on the photoacoustic sensing principle and Sensirion’s patented PASens® and CMOSens® Technology to enable unmatched small sensor size combined with high performance. SMD compatibility and the small footprint allow cost- and space-effective integration to boost freedom of design for customers. The integrated best-in class humidity and temperature sensor enables superior on-chip signal compensation and addition RH and T outputs. Finally, the large supply voltage (2.4 V – 5.5 V), the robustness towards external stresses and the adjustable power consumption make the SCD4x the perfect fit for varying customer needs.


  • Size: 10.1 x 10.1 x 6.5 mm3
  • Mounting type: SMD
  • Interface: I2C
  • Supply voltage range: 2.4 to 5.5 V
  • Current consumption: 17 mA (meas. rate = 5 s); 0.5 mA (meas. rate = 5 min)
  • On-chip RH and T compensation: yes
  • Output range: 0 to 40'000 ppm
  • Applications: Demand-controlled Ventilation, Indoor air quality Monitoring, CO2 ventilation Alarm, IoT / Smart Home, Agriculture / Green housing, Industrial

SCD4x Resources

SCD4x Products

Loading ...

Previously Viewed Products