Sensirion

SCD5x Next-Generation High-Performance Carbon Dioxide Sensor — Coming Soon!

The Sensirion SCD5x sensor combines NDIR sensing with advanced laser technology for dependable accuracy in environments with infrequent fresh air cycles

Image of Sensirion SCD5x Carbon Dioxide SensorThe SCD5x series (headlined by the SCD53) represents the latest leap in environmental sensing from Sensirion. The series is engineered to solve the most persistent challenge in air quality monitoring: long-term sensor drift. While traditional CO2 sensors often require regular exposure to outdoor fresh air to enable costly manual recalibration or complicated automatic baseline calibration algorithms for maintaining sensor accuracy, the SCD5x is designed with intrinsic stability. By combining photoacoustic non-dispersive infrared (NDIR) sensing expertise from Sensirion with the advanced laser technology, the SCD5x delivers outstanding accuracy that remains dependable even in demanding environments where fresh air cycles are infrequent.

This sensor is not just stable; it is remarkably robust. It features high resistance to dust, vibrations, and mechanical stress, making it a fit-and-forget solution for industrial and commercial applications. The module is fully integrated, providing calibrated CO2 readings alongside on-chip humidity and temperature compensation. Its compact form factor and reflow-solderable LGA package ensure that it can be integrated into space-constrained designs with minimal manufacturing overhead. Whether utilized for high-precision HVAC control or indoor air quality monitors, the SCD5x ensures that energy efficiency and human comfort are never compromised by declining sensor performance.

Features
  • High intrinsic stability: Maintains accuracy without relying on automatic baseline calibration (ABC) or fresh air exposure
  • Standards and regulation compatibility: Fully compatible with the latest and strictest HVAC standards on the market
  • Advanced laser technology: Utilizes a laser-based photoacoustic principle for superior long-term reliability
  • Outstanding accuracy: Precision of ±(30 ppm + 3% m.v.) for critical monitoring tasks
  • Integrated RH and T sensing: On-board humidity and temperature compensation for environmental performance
  • Robust design: High resistance to external mechanical forces, vibrations, and dust exposure
  • Reflow solderable: LGA package designed for cost-effective, high-volume SMD assembly
  • Compact form factor: Small footprint allows for seamless integration into slim devices
  • Optional pressure correction: Capability to integrate pressure data for even higher measurement precision
  • Digital interface: Simple integration via standard communication protocols (I²C)
  • On-demand measurement: Supports flexible measurement modes to balance power and data frequency
  • Wide supply voltage range: Compatible with standard electronics voltage levels
  • Fully calibrated output: Ready-to-use digital data straight from the sensor
Applications
  • Demand-controlled ventilation (DCV): Optimizing HVAC systems based on real-time occupancy
  • Indoor air quality monitors: High-end consumer and commercial air sensing devices
  • Smart home systems: Integration into thermostats and environmental controllers
  • Industrial sensing: Monitoring CO2 levels in environments where fresh air is rare
  • Greenhouses and hydroponics: Precision CO2 control for optimized plant growth
  • Building automation: Enhancing energy efficiency in Green Building certified projects
  • Educational facilities: Maintaining CO2 levels to support student cognitive performance
  • Healthcare environments: Air quality monitoring in hospitals and clinics
Veröffentlicht: 2026-02-13