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STC31-R3
Thermal Conductivity Sensor for detecting elevated CO2 levels in the air
STC31-R3
Thermal Conductivity Sensor for detecting elevated CO2 levels in the air
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Manufacturer Part # : STC31-R3
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Package/Case: QFN-12
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Brand: Sensirion Ag
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Product Categories : Gas Sensors
Quality Assurance
Quality Assurance
All parts procured from our supply chain network undergo a rigorous incoming inspection process. This meticulous inspection ensures that the parts received by our customers are authentic and meet the required standards. Additionally, we maintain detailed records of these inspections to ensure transparency and traceability throughout the supply chain.
Certification
We have successfully obtained various certification standards and have established our own professional testing laboratory. This ensures that every product we supply to our customers meets the highest quality standards. We adhere to strict testing protocols to maintain the consistency and accuracy of our products. To ensure that our products are original and genuine, we also collaborate with reputable third-party testing facilities to conduct rigorous quality testing. Our commitment to quality extends to meeting industry, legal, regulatory, and ISO 9001:2015 requirements.
Shipping & Payment
Shipping & Payment
About Shipping
We generally ship orders within a few business days through reliable shipping carriers such as FedEx, SF, UPS, or DHL. We also have support for other shipping methods. If you would like to inquire about specific shipping details or costs, please don't hesitate to reach out to us.
About Payment
We accept various payment methods, including VISA, MasterCard, UnionPay, Western Union, PayPal, and other channels.
If you have a specific payment method in mind or would like to inquire about rates and other details, please feel free to contact us.
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Service & Packaging
Service & Packaging
About After Sales Service
All Parts Extended Quality Guarantee
Initiate the application within 90 days from the shipment date.
Confirm the return or exchange with our staff.
Maintain the goods in their original condition as received.
Lastly, please note that the eligibility for return or exchange of goods is subject to an assessment of the actual condition of the returned items. We will evaluate the received goods before finalizing the return or exchange process. If you have any inquiries or require further assistance regarding returns or exchanges, please don't hesitate to contact us at [email protected]
About packaging
Regarding packaging, our products are carefully packed in anti-static bags to provide ESD anti-static protection. The outer packaging is durable with secure closure. We support various packaging methods such as Tape and Reel, Cut Tape, Tube, or Tray.
Example
Tape and Reel
Cut Tape
Tube or Tray
STC31-R3 DataSheet
Current price plan is under preparation. Please contact our customer service team for the latest pricing information. Thank you for your understanding and support!
Details
Operating on a 3.3V DC power supply and consuming less than 50mA of power, the STC31-R3 is highly energy-efficient, making it suitable for battery-powered applications. Moreover, in addition to CO2 measurement, this module also provides temperature and humidity outputs, enabling comprehensive environmental monitoring. Its compatibility with multiple microcontrollers and communication protocols ensures versatility and seamless integration into diverse systems
Key Features
- High sensitivity for volatile organic compounds (VOCs)
- Low power consumption
- Compact design for easy integration
- Wide measurement range from 0 to 10,000 ppm
- Fast response time of less than 10 seconds
- Temperature and humidity compensation
Application
- Indoor air quality monitoring in homes, offices, and public spaces
- Agricultural applications for monitoring VOC levels in greenhouses and farms
- Automotive applications for monitoring VOC emissions in vehicles
- Industrial applications for monitoring air quality in factories and production facilities
- Environmental monitoring for detecting pollution levels in air and water
Specifications
The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.
| Product Category ! | Air Quality Sensors | RoHS | Details |
| Type | Gas Sensor | Sensor Type | Carbon Dioxide (CO2) |
| Maximum Operating Temperature ! | + 85 C | Minimum Operating Temperature | - 20 C |
| Operating Supply Voltage ! | 3.3 V | Brand | Sensirion |
| Current Rating ! | 3 mA | Mounting Style | SMD/SMT |
| Package / Case | QFN-12 | Product Type ! | Air Quality Sensors |
| Series | STC31 | Factory Pack Quantity | 400 |
| Subcategory | Sensors | Supply Voltage - Max | 5.5 V |
| Supply Voltage - Min | 2.7 V | Tradename | CMOSens |
| Part # Aliases | 3.000.331 |
FAQs
What is STC31-R3?
The STC31-R3 is a high-accuracy, miniaturized carbon dioxide (CO2) sensor module developed by Sensirion. It is designed for measuring CO2 concentration in indoor air quality monitoring, HVAC systems, and other applications requiring precise CO2 measurements.
How Does STC31-R3 Work?
The STC31-R3 operates by using Sensirion's unique Photoacoustic Sensing technology, which enables the accurate and stable measurement of CO2 concentration. The sensor module detects the concentration of CO2 molecules using a light source and a photoacoustic detector, providing digital output for easy integration into various systems.
How Many Pins does STC31-R3 have and What are the Functions of the Pinout Configuration?
The STC31-R3 is housed in a compact 4-pin LGA (Land Grid Array) package. The pinout configuration includes:
- VDD: Power supply pin for the sensor module.
- GND: Ground pin for the sensor module.
- SCL: Serial clock for I2C communication.
- SDA: Serial data for I2C communication.
What are the Pros and Cons of STC31-R3?
Pros:
- High Accuracy: Provides precise measurements of CO2 concentration for critical applications.
- Miniaturized Size: Compact form factor for easy integration into space-constrained designs.
- Digital Output: Offers digital output for simplified interfacing with microcontrollers and other devices.
- Low Power Consumption: Operates with low power, suitable for battery-powered applications.
Cons:
- Cost: High-accuracy sensor modules like the STC31-R3 may have a higher cost compared to lower-accuracy alternatives.
- Complex Integration: Requires understanding of I2C communication and sensor interfacing for successful integration.
Are There Any Equivalents/Alternatives to STC31-R3 for Recommendation?
- The SCD30 from Sensirion is a similar CO2 sensor module with additional features such as temperature and humidity measurement.
- Alternatives to the STC31-R3 include the MH-Z19B from Winsen and the K30 from Senseair.
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