STC31-R3
Chip-sized gas concentration sensor for high range, accurate CO2 measurements designed for high-volume production
Sensirion AGThe Most Effective Way to Measure High CO2 Concentrations
The STC31 is a chip-sized gas concentration sensor for high range, accurate CO2 measurements designed for high-volume production. The sensor is based on a revolutionized thermal conductivity measurement principle, which results in superior repeatability and long-term stability. This makes the STC31 the perfect choice for applications where reliability is key. Thermal conductivity technology has an ultra-low power consumption, even compared to low-power optical sensor. This makes it the ideal choice for battery operated applications, delivering top-performance at an absolute minimal power budget.
Applications
- • Cold chain logistics
- • Controlled atmosphere food transportation
- • Datalogging
Features and Benefits
- • Small chip-sized package: 3.5mm x 3.0mm x 1.0mm
- • Interface: I2C
- • Supply voltage range: 2.7 V to 5.5 V
- • Power consumption (@1 measurement per minute): 15 µW
- • Calibrated gas concentration and temperature output
- • Gas concentration measurement range: 0 to 100 vol%
- • Gas concentration accuracy: < 0.5 vol% (±3% of m.v.)
- • T measurement range: -20 to 85 °C
- • T accuracy:
- • 0.5 °C (10 °C to 50 °C)
- • 1.5 °C (-20 °C to 85 °C)
| Technology | Benefit |
| CMOSens® Technology designed for mass production | Enable high-volume applications due to unprecedented price-performance ratio that scales with quantities |
| Many years of experience in the medical and automotive industries | Proven and reliable quality |
| Robust and long lifetime | Reliable sensor output over product lifetime |
| On-chip humidity compensation | Worry-free operation at high humidity |
| Ultra-low power consumption | Longer battery life and cost savings |
| Small chip-sized package: 3.5mm x 3.0mm x 1.0mm | Easy to integrate in existing design and portable devices |
| Fully calibrated digital output with I2C interface | Easy hassle-free integration |
| Reflow solderable | Fast, automated and low-cost assembly |
Featured Articles and Videos
Design-in-Guide
Field Calibration Guide
Related Product
Product Technical Specifications
EU RoHS
Compliant
ECCN (US)
EAR99
Part Status
Obsolete
HTS
9031.80.80.85
Automotive
No
PPAP
No
Type
CO2 Sensor
Module/IC Classification
IC
Minimum Operating Supply Voltage (V)
2.7
Typical Operating Supply Voltage (V)
3.3
Maximum Operating Supply Voltage (V)
5.5
Minimum Operating Temperature (°C)
-20
Maximum Operating Temperature (°C)
85
Mounting
Surface Mount
Package Height
1
Package Width
3
Package Length
3.5
PCB changed
12
Standard Package Name
QFN
Supplier Package
QFN EP
Pin Count
12