SCD42
ObsoleteCO₂ accuracy of ± 75 ppm @400-1000 ppm
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.
Successor product
| Name | Description | Series | Category |
|---|---|---|---|
 SCD41 | High CO₂ accuracy with extended measurement range and low power modes | SCD4x | CO₂ |
Specification
| CO₂ | |||
|---|---|---|---|
| Measurement range
400 - 2000
| 400 - 2000 | ppm | |
| Accuracy: Baseline
±75
| ±75 | ppm | |
| Response time (τ63%)
60
| 60 | s |
| Humidity | |||
|---|---|---|---|
| Typ. relative humidity accuracy
6
| 6 | %RH | |
| Operating relative humidity range
0 - 95
| 0 - 95 | %RH | |
| Response time (τ63%)
120
| 120 | s | |
| Calibration certificate
Factory calibration
| Factory calibration |
| Generic | |||
|---|---|---|---|
| Supply voltage
2.4 - 5.5
| 2.4 - 5.5 | V | |
| Average supply current
18000
| 18000 | uA | |
| Max. supply current
205000
| 205000 | uA | |
| Interfaces
I²C
| I²C | ||
| Size (LxWxH)
10.1 x 10.1 x 6.5
| 10.1 x 10.1 x 6.5 | mm³ | |
| Packaging size
600
| 600 | pcs (T&R) |
| Temperature | |||
|---|---|---|---|
| Typ. temperature accuracy
0.8
| 0.8 | °C | |
| Operating temperature range [°C]
-10 - 60
| -10 - 60 | °C | |
| Response time (τ63%)
120
| 120 | s |
Downloads
Sensor evaluation
Buy the following products to evaluate this sensor
| Name | Description | Series | Category |
|---|---|---|---|
 SEK-SCD41 | CO₂ evaluation kit SCD4x series | SEK-SCDxx | CO₂ |
 SEK-SensorBridge | Connecting bridge with two sensor ports | SEK-SensorBridge |
Download the respective viewer software to start measuring
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