SGP41

VOC and NOx sensor for smartly regulating air treatment devices

Specification

VOC
Sensor output
Digital 16-bit raw signal
Processed output
0-500 VOC Index
Measurement range (TVOC)
0 - 1000
ppm
Response time (τ63%)
< 10
s
Device-to-device var. (TVOC)
±15
% m.v.
Limit of detection
< 0.05 ppm of ethanol equivalents or < 10 % of concentration setpoint, whichever is larger
Switch-on time
1
h
On-chip humidity compensation
Yes
Generic
Supply voltage
1.7 - 3.6
V
Average supply current
3000
μA
Max. supply current
3400
μA
Interfaces
I²C
Package size (LxWxH)
2.44 x 2.44 x 0.85
mm³

Technical downloads

Name
Type
Date
File
Size
Datasheet SGP41
Datasheet
12/2021
PDF
1.0 MB
Quick testing guide SGP41
User guide
11/2021
PDF
483.5 KB
How can air quality at home be improved?
Application note
04/2022
PDF
323.8 KB
How can I integrate Sensirion’s VOC and NOx sensors into my air purifier?
Application note
04/2022
PDF
240.0 KB
How can I make my air purifier smart/efficient?
Application note
04/2022
PDF
281.5 KB
Is it possible to map the output of a MOX sensor to a norm?
Application note
04/2022
PDF
246.0 KB
What are oxidizing gases?
Application note
04/2022
PDF
280.3 KB
What are reducing gases?
Application note
04/2022
PDF
396.9 KB
What is a metal oxide (MOX) sensor?
Application note
04/2022
PDF
276.5 KB
What is Sensirion’s NOx Index?
Application note
04/2022
PDF
331.2 KB
What is Sensirion’s VOC Index?
Application note
04/2022
PDF
289.8 KB
Design-in guide SGP4x
User guide
08/2020
PDF
304.4 KB
STEP file SGP40
CAD
10/2021
STEP
1.3 MB
REACH and RoHS declaration SGP
Certificate
07/2021
PDF
96.4 KB
Gas sensors brochure
Flyer
07/2021
PDF
996.5 KB
Handling and assembly instructions SGP
User guide
11/2020
PDF
350.0 KB
Indoor air quality brochure
Flyer
10/2021
PDF
7.7 MB

Buy the following product to evaluate this sensor

The SGP41 is Sensirion’s new VOC and NOx sensor designed as digital smart switch and regulation unit for air treatment devices such as air purifiers.

The two sensor signals processed by Sensirion’s powerful Gas Index Algorithm can be directly used to automatically trigger the removal of indoor air gas pollutants by air treatment devices without the need for user–device interaction. This sensor solution is thus well-suited for constantly monitoring the VOC and NOx situation including potentially harmful events which are not perceived by humans. Furthermore, an automatic control of air treatment devices based on the SGP41 signals helps to save energy by turning them off once the VOC and/or NOx events have been taken care off.

SGP41 offers a solution for two complete sensors on a single chip facilitating design-in and saving design costs. Thanks to its very small DFN package (2.44 x 2.44 x 0.85 mm³) the sensor can be designed into applications with limited spaces. SGP41’s multi-pixel sensing element features an unmatched robustness against contaminating gases which are present in real-world applications enabling unique long-term stability as well as low drift. Sensirion’s state-of-the-art production process guarantees high reproducibility and reliability. Tape and reel packaging together with suitability for standard SMD assembly processes make the SGP41 predestined for high volume applications.

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