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Back to catalog
New

STCC4

  • All products
  • •CO₂ sensors
  • •STCC4

CO₂ sensor with unmatched form factor for indoor air quality applications

STCC4 offers one of the smallest form factors on the market for direct measurement of CO2, unlocking new applications previously limited by size and cost constraints. Designed for seamless integration into compact electronic devices, the sensor is a groundbreaking newcomer in the CO2 sensor market.

 

Utilizing the latest technological advancements in thermal conductivity sensing, the fully factory calibrated STCC4 provides the accuracy needed for indoor air quality applications at a low current consumption. Both accurate signal compensation and monitoring of relevant indoor environmental parameters are achieved when STCC4 is combined with our industry-leading temperature and humidity sensors. Optimized for high volume assembly through its SMD design and tape & reel packaging, it is suitable for a wide range of applications, including indoor air quality monitors, smart thermostats, air conditioners and much more.

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Specification

CO₂
Specified CO₂ Measurement Range400 - 5000ppm400 - 5000ppm
Accuracy
±100.0 ppm ±10.0 %m.v.
±100.0 ppm ±10.0 %m.v.
Response time (τ63%)20s20s
Generic
Supply voltage2.7 - 5.5V2.7 - 5.5

Downloads

Datasheet STCC4
  • 06/2025•
  • PDF•
  • 743.8 KB
DatasheetDownload Datasheet STCC406/2025Download Datasheet STCC4PDFDownload Datasheet STCC4743.8 KBDownload Datasheet STCC4
Testing Guide STCC4
  • 06/2026•
  • PDF•
  • 344.4 KB
GuideDownload Testing Guide STCC406/2026Download Testing Guide STCC4PDFDownload Testing Guide STCC4344.4 KBDownload Testing Guide STCC4
Carbon Dioxide product flyer
  • 03/2026•
  • PDF•
  • 2.2 MB
FlyerDownload Carbon Dioxide product flyer03/2026Download Carbon Dioxide product flyerPDFDownload Carbon Dioxide product flyer2.2 MBDownload Carbon Dioxide product flyer
Carbon Dioxide product flyer Chinese
  • 03/2026•
  • PDF•
  • 1.3 MB
FlyerDownload Carbon Dioxide product flyer Chinese03/2026Download Carbon Dioxide product flyer ChinesePDFDownload Carbon Dioxide product flyer Chinese1.3 MBDownload Carbon Dioxide product flyer Chinese
Design-in guide STCC4
  • 10/2025•
  • PDF•
  • 254.9 KB
GuideDownload Design-in guide STCC410/2025Download Design-in guide STCC4PDFDownload Design-in guide STCC4254.9 KBDownload Design-in guide STCC4
Handling instructions STCC4
  • 02/2026•
  • PDF•
  • 248.8 KB
GuideDownload Handling instructions STCC402/2026Download Handling instructions STCC4PDFDownload Handling instructions STCC4248.8 KBDownload Handling instructions STCC4
Arduino driver STCC4
  • 06/2025•
  • Link•
SoftwareDownload Arduino driver STCC406/2025Download Arduino driver STCC4LinkDownload Arduino driver STCC4Download Arduino driver STCC4
Embedded driver STCC4
  • 06/2025•
  • Link•
SoftwareDownload Embedded driver STCC406/2025Download Embedded driver STCC4LinkDownload Embedded driver STCC4Download Embedded driver STCC4
Python driver STCC4
  • 06/2025•
  • Link•
SoftwareDownload Python driver STCC406/2025Download Python driver STCC4LinkDownload Python driver STCC4Download Python driver STCC4
Raspberry Pi driver STCC4
  • 06/2025•
  • Link•
SoftwareDownload Raspberry Pi driver STCC406/2025Download Raspberry Pi driver STCC4LinkDownload Raspberry Pi driver STCC4Download Raspberry Pi driver STCC4
STEP file STCC4
  • 06/2025•
  • STEP•
  • 1.6 MB
Drawings/CADDownload STEP file STCC406/2025Download STEP file STCC4STEPDownload STEP file STCC41.6 MBDownload STEP file STCC4
REACH and RoHS declaration SCDxx, STCC4 and CO2 Gadget
  • 04/2026•
  • PDF•
  • 100.9 KB
CertificateDownload REACH and RoHS declaration SCDxx, STCC4 and CO2 Gadget04/2026Download REACH and RoHS declaration SCDxx, STCC4 and CO2 GadgetPDFDownload REACH and RoHS declaration SCDxx, STCC4 and CO2 Gadget100.9 KBDownload REACH and RoHS declaration SCDxx, STCC4 and CO2 Gadget
Carbon dioxide product flyer Japanese
  • 07/2026•
  • PDF•
  • 1.4 MB
FlyerDownload Carbon dioxide product flyer Japanese07/2026Download Carbon dioxide product flyer JapanesePDFDownload Carbon dioxide product flyer Japanese1.4 MBDownload Carbon dioxide product flyer Japanese
Indoor air quality brochure
  • 11/2025•
  • PDF•
  • 7.0 MB
FlyerDownload Indoor air quality brochure11/2025Download Indoor air quality brochurePDFDownload Indoor air quality brochure7.0 MBDownload Indoor air quality brochure
  • Home
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  • STCC4
V
Average supply current950uA950uA
Max. supply current4.2mA4.2mA
Operating temperature range [°C]10 - 40°C10 - 40°C
InterfacesI²CI²C
Size (LxWxH)4 x 3 x 1.2mm4 x 3 x 1.2mm
Packaging size1500pcs (T&R)1500pcs (T&R)

Sensor evaluation

Buy the following products to evaluate this sensor

NameDescriptionSeriesCategory
SEK-STCC4Evaluation kit for CO2 sensor STCC4SEK-STCC4CO₂ sensors

SEK-STCC4

Evaluation kit for CO2 sensor STCC4

SEK-STCC4

CO₂ sensors

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.

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