Specification

Formaldehyde
Measurement range
0 - 1000
0 - 1000 ppb
Accuracy
±20 ppb or ±20% m.v.
±20 ppb or ±20% m.v.
Sensor output
Formaldehyde concentration in ppb, RH, T
Formaldehyde concentration in ppb, RH, T
Cross sensitivity to ethanol
< 0.5
< 0.5 %
Limit of detection
< 20
< 20 ppb
Lifetime
> 6
> 6 years
Humidity
Typ. relative humidity accuracy
2.5
2.5 %RH
Operating relative humidity range
10 - 90
10 - 90 %RH
Generic
Supply voltage
3.15 - 5.5
3.15 - 5.5 V
Average supply current
1000
1000 uA
Max. supply current
5000
5000 uA
Interfaces
I²C, UART
I²C,UART
Size (LxWxH)
46 x 24 x 5.5
46 x 24 x 5.5 mm³
Temperature
Typ. temperature accuracy
0.2
0.2 °C
Operating temperature range
0 - 40
0 - 40 °C

Technical downloads

Name Type Date File Size
Datasheet SFA30

01/2023

File

455.4 KB

Datasheet 01/2023 PDF 455.4 KB
Arduino snippets SFA30

11/2021

Link

-

Software 11/2021 Link -
Makecode SFA30

11/2021

Link

-

Software 11/2021 Link -
SFA30 product flyer

07/2021

File

598.5 KB

Flyer 07/2021 PDF 598.5 KB
SEK-ControlCenter (all devices)

10/2021

Link

-

Viewer software 10/2021 Link -
Description I²C SFA30

01/2021

File

269.0 KB

Application note 01/2021 PDF 269.0 KB
Handling and assembly instructions SFA30

04/2021

File

384.4 KB

Application note 04/2021 PDF 384.4 KB
Design-in guide SFA30

11/2020

File

807.4 KB

User guide 11/2020 PDF 807.4 KB
Arduino driver I2C SFA3x

10/2021

Link

-

Software 10/2021 Link -
Arduino driver UART SFA3x

10/2021

Link

-

Software 10/2021 Link -
BLE gadget SFA30

10/2021

Link

-

Software 10/2021 Link -
Embedded drivers SFA3x

10/2021

Link

-

Software 10/2021 Link -
Raspberry Pi drivers I2C SFA3x

10/2021

Link

-

Software 10/2021 Link -
Raspberry Pi drivers UART SFA3x

10/2021

Link

-

Software 10/2021 Link -
STEP file SFA30

10/2021

File

5.9 MB

CAD 10/2021 STEP 5.9 MB
REACH and RoHS declaration SFA3x

02/2024

File

99.6 KB

Certificate 02/2024 PDF 99.6 KB
Indoor air quality brochure

10/2021

Link

7.7 MB

Flyer 10/2021 Link 7.7 MB

Sensor evaluation

Buy the following products to evaluate this sensor

Name Description Series Category
SEK-SFA30
Formaldehyde evaluation kit SFA30 SEK-SFAxx Formaldehyde

Download the respective viewer software to start measuring

Go to download center

Start testing our sensors fast and easy with the evaluation kits

How to get started

Smart sensors for your application

Sensirion's sensor solutions are used in a wide range of applications and markets. Our reliable environmental and flow sensors improve energy efficiency, increase health and ensure safety and comfort.