Datasheet SGP40 Indoor Air Quality Sensor for VOC Measurements MOx based gas sensor for indoor air quality applications Outstanding long-term stability and lifetime I2C interface with digital output signal Very small 6-pin DFN package: 2.44 x 2.44 x 0.85 mm3 Low power consumption: 2.6 mA at 3.3 V Tape and reel packaged, reflow solderable Product Summary The SGP40 is a digital gas sensor designed for easy VOC Algorithm feature an unmatched robustness integration into air purifiers or demand-controlled against contaminating gases present in real-world ventilation systems. Sensirion’s CMOSens® technology applications enabling a unique long-term stability as offers a complete, easy-to-use sensor system on a single well as low drift and device-to-device variation. The very chip featuring a digital I2C interface and a temperature- small 2.44 x 2.44 x 0.85 mm3 DFN package enables controlled micro hotplate, providing a humidity- applications in limited spaces. Sensirion’s compensated VOC based indoor air quality signal. The state-of-the-art production process guarantees high output signal can be directly processed by Sensirion’s reproducibility and reliability. Tape and reel packaging powerful VOC Algorithm to translate the raw signal into a together with suitability for standard SMD assembly VOC Index as a robust measure for indoor air quality. The processes make the SGP40 predestined for high- VOC Algorithm automatically adapts to the environment volume applications. the sensor is exposed to. Both sensing element and Figure 1 Functional block diagram of the SGP40. www.sensirion.com Version 1.1 – September 2021 1/19