SCD40 Air Quality CO2 Sensor Carbon Dioxide Photoacoustic
The SCD4x is Sensirion’s next generation miniature CO2 sensor. This sensor builds on the photoacoustic sensing principle and Sensirion’s patented PAsens® and CMOSens® technology to offer high accuracy at an unmatched price and smallest form factor. SMD assembly allows cost- and space-effective integration of the sensor combined with maximal freedom of design. On-chip signal compensation is realized with the build-in SHT4x humidity and temperature sensor.
Features
 ▪ Photoacoustic sensor technology PASens®
 ▪ Smallest form factor: 10.1 x 10.1 x 6.5 mm3
 ▪ Reflow solderable for cost effective assembly
 ▪ Large output range: 0 ppm – 40’000 ppm
 ▪ Large supply voltage range: 2.4 – 5.5 V
 ▪ High accuracy: ±(40 ppm + 5 %)
 ▪ Digital I2C interface
 ▪ Integrated temperature and humidity sensor
 ▪ Low power operation down to < 0.4 mA avg.
 @ 5 V, 1 meas. / 5 minutes
Datasheet:
| Moisture Sensitivity | Yes | 
| Installation style | SMD/SMT | 
| Product Type | Air Quality Sensors | 
| Supply Voltage - Maximum | 5.5 V | 
| Supply Voltage - Min | 2.4 V | 
