NG # 09440005-HW-SENSIRION-005
Sensirion STC31-C is a chip-sized CO₂ concentration sensor designed for accurate high-range measurements from 0–100 vol%. Its thermal conductivity sensing principle delivers excellent repeatability, long-term stability, and ultra-low power consumption, making it well suited for battery-powered and cost-sensitive OEM applications.
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Get A QuoteThe Sensirion STC31-C provides reliable CO₂ concentration measurement with an accuracy of ±0.2 vol% ±2.0% of measured value and a fast 0.5-second response time. Its low-power thermal conductivity technology enables efficient operation with an average supply current of just 50 µA. The compact 3.5 × 3 × 1 mm sensor operates from 2.7–5.5 V and communicates through a digital I²C interface, making it ideal for battery-operated devices, gas monitoring systems, and high-volume OEM applications.
Type: CO₂ Gas Concentration Sensor
CO₂ Measurement Range: 0–100 vol%
Accuracy: ±0.2 vol% ±2.0% m.v.
Response Time: 0.5 s
Temperature Stability: 0.02 vol%/°C
Supply Voltage: 2.7–5.5 V
Average Supply Current: 50 µA
Maximum Supply Current: 5 mA
Interface: I²C
Dimensions: 3.5 × 3 × 1 mm
Measurement Principle: Thermal Conductivity
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