Sensirion STC31-R3 Carbon Dioxide Gas Sensor IC for CO Detectors

Subtotal (1 unit)*

€ 36,83

(exc. VAT)

€ 44,56

(inc. VAT)

Add to Basket
Select or type quantity
Bestellingen onder € 75,00 (excl. BTW) € 5,95.
Laatste voorraad RS
  • 2 stuk(s) klaar voor verzending vanaf een andere locatie
  • Laatste verzending 189 stuk(s) vanaf 10 februari 2026
Units
Per unit
1 +€ 36,83

*price indicative

Packaging Options:
RS Stock No.:
205-7754
Mfr. Part No.:
STC31-R3
Brand:
Sensirion
Find similar products by selecting one or more attributes.
Select all

Merk

Sensirion

Product Type

Gas Sensor IC

Gases Detected

Carbon Dioxide

Accuracy

±1.5°C

Response Time

14ms

Application

CO Detectors

Sub Type

Air Quality Sensor

Minimum Supply Voltage

2.7V

Maximum Supply Voltage

5.5V

Power Source

Mains

Minimum Operating Temperature

-20°C

Pin Count

12

Maximum Operating Temperature

85°C

Length

3.5mm

Height

1mm

Width

3 mm

Standards/Approvals

No

Weight

0.03g

Automotive Standard

No

The environmental STC31 CO2 Gas sensor is part of the Sensirion STC3x sensor family. The gas concentration sensors are designed for high-volume accurate CO2 measurements. CMOSens® Technology combines the sensor element, signal processing and digital calibration on a small CMOS chip perfect for mass production.

The Sensirion CO2 gas sensor operates a thermal conductivity measurement principle, resulting in high reliability and long-term stability. Featuring a digital I2C interface making it easy to connect directly to a microprocessor. The thermal conductivity technology has an ultra-low power consumption, ideal for battery-operated applications.

The SEK-STC31 Evaluation kit, is also available see RS 205-7756 which includes 1 x STC31 Sensor module, 1 x SHTC3 on FPCB, 1 x RJ45 adapter cable (1m length).

SensorBridge is available separately see 195-0680

High reliability and long-term stability

Best signal-to-noise ratio

Industry-proven technology with a track record of more than 15 years

Designed for mass production

High process capability

Related links