Sensirion STC31-R3 Carbon Dioxide Gas Sensor IC for CO Detectors
- RS Stock No.:
- 205-7754
- Mfr. Part No.:
- STC31-R3
- Brand:
- Sensirion
This image is representative of the product range
Bulk discount available
Subtotal (1 unit)*
$100.77
(exc. GST)
$110.85
(inc. GST)
FREE delivery for orders over $60.00 ex GST
Last RS stock
- 2 left, ready to ship from another location
- Final 189 unit(s) shipping from 10 February 2026
Units | Per unit |
|---|---|
| 1 - 99 | $100.77 |
| 100 - 199 | $98.25 |
| 200 + | $96.73 |
*price indicative
- RS Stock No.:
- 205-7754
- Mfr. Part No.:
- STC31-R3
- Brand:
- Sensirion
Specifications
Technical data sheets
Legislation and Compliance
Product Details
Find similar products by selecting one or more attributes.
Select all | Attribute | Value |
|---|---|---|
| Brand | Sensirion | |
| Gases Detected | Carbon Dioxide | |
| Product Type | Gas Sensor IC | |
| Accuracy | ±1.5°C | |
| Response Time | 14ms | |
| Application | CO Detectors | |
| Sub Type | Air Quality Sensor | |
| Minimum Supply Voltage | 2.7V | |
| Power Source | Mains | |
| Maximum Supply Voltage | 5.5V | |
| Minimum Operating Temperature | -20°C | |
| Pin Count | 12 | |
| Maximum Operating Temperature | 85°C | |
| Standards/Approvals | No | |
| Height | 1mm | |
| Length | 3.5mm | |
| Width | 3 mm | |
| Weight | 0.03g | |
| Automotive Standard | No | |
| Select all | ||
|---|---|---|
Brand Sensirion | ||
Gases Detected Carbon Dioxide | ||
Product Type Gas Sensor IC | ||
Accuracy ±1.5°C | ||
Response Time 14ms | ||
Application CO Detectors | ||
Sub Type Air Quality Sensor | ||
Minimum Supply Voltage 2.7V | ||
Power Source Mains | ||
Maximum Supply Voltage 5.5V | ||
Minimum Operating Temperature -20°C | ||
Pin Count 12 | ||
Maximum Operating Temperature 85°C | ||
Standards/Approvals No | ||
Height 1mm | ||
Length 3.5mm | ||
Width 3 mm | ||
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
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