SCD42

CO₂ accuracy of ± 75 ppm @400-1000 ppm

Specification

CO₂
Accuracy
±75
ppm
Measurement range
400 - 2000
ppm
Response time (τ63%)
60
s
Humidity
Typ. relative humidity accuracy
6
%RH
Operating relative humidity range
0 - 95
%RH
Response time (τ63%)
120
s
Calibration certificate
Factory calibration
Temperature
Typ. temperature accuracy
0.8
°C
Operating temperature range
-10 - 60
°C
Response time (τ63%)
120
s
Generic
Supply voltage
2.4 - 5.5
V
Average supply current
18000
uA
Max. supply current
205000
uA
Interfaces
I²C
Package size (LxWxH)
10.1 x 10.1 x 6.5
mm³
Packaging size
600
pcs (T&R)

Technical downloads

Name
Type
Date
File
Size
Datasheet SCD42
Datasheet
03/2022
PDF
994.5 KB
SCD42 product flyer
Flyer
10/2021
PDF
817.9 KB
SEK-ControlCenter (all devices)
Viewer software
10/2021
Link
-
Low power operation SCD4x
Application note
07/2022
PDF
443.0 KB
What types of NDIR sensors exist and how do they work?
Application note
05/2022
PDF
146.5 KB
Design-in guide SCD4x
User guide
01/2021
PDF
478.2 KB
Handling instructions SCD4x
User guide
01/2021
PDF
551.9 KB
Testing guide SCD4x
User guide
10/2021
PDF
2.0 MB
Arduino driver SCD4x
Software
10/2021
Link
-
Arduino snippets SCD4x
Software
10/2021
Link
-
BLE gadget SCD4x
Software
10/2021
Link
-
Embedded driver SCD4x
Software
10/2021
Link
-
Makecode for micro:bit SCD4x
Software
10/2021
Link
-
Python Package SCD4x
Software
10/2021
Link
-
Raspberry Pi driver SCD4x
Software
10/2021
Link
-
Altium footprint SCD4x
CAD
10/2021
Link
-
STEP file SCD4x
CAD
10/2021
STEP
632.1 KB
STEP file SEK-SCD41
CAD
10/2021
STEP
770.9 KB
Calibration certification SCD4x
Certificate
05/2022
PDF
118.0 KB
REACH and RoHS declaration SCDxx
Certificate
07/2022
PDF
87.3 KB
SCD4x product flyer
Flyer
10/2022
PDF
858.5 KB
Indoor air quality brochure
Flyer
10/2021
PDF
7.7 MB

Buy the following products to evaluate this sensor

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.

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