SFA30

Formaldehyde sensor with ultra low cross-sensitivity to ethanol

Specification

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

Technical downloads

Name
Type
Date
File
Size
Datasheet SFA30
Datasheet
11/2020
PDF
657.7 KB
Product Flyer SFA30
Flyer
07/2021
PDF
598.5 KB
Description I²C SFA30
Application note
01/2021
PDF
269.0 KB
Handling and assembly instructions SFA30
Application note
04/2021
PDF
384.4 KB
Design-in guide SFA30
User guide
11/2020
PDF
807.4 KB
STEP file SFA30
CAD
10/2021
STEP
5.9 MB
REACH and RoHS declaration SFA3x
Certificate
07/2022
PDF
93.4 KB
Indoor air quality brochure
Flyer
10/2021
PDF
7.7 MB

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The SFA30 is Sensirion’s new digital formaldehyde sensor designed for easy integration into air purifiers, demand-controlled ventilation systems, or indoor air quality monitors.

Based on Sensirion’s electrochemical technology, the SFA30 offers excellent formaldehyde sensing performance with a uniquely low cross-sensitivity to other VOCs. The sensor module’s on-board SHT sensor provides accurate humidity and temperature readings and enables a fully temperature/humidity compensated and factory calibrated formaldehyde concentration output in ppb. Selectable digital UART and I²C interface options, a standard electrical connector, and versatile mounting options make the integration easy. Relying on Sensirion’s experience in environmental sensing and a patented electrochemical cell with anti-dry technology, the SFA30 offers excellent long-term stability and 6 years service lifetime.

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