• CO2 Sensor
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CO2 Sensor

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Shenzhen Isweek Technology Co., Ltd

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  • Price

    Price on request   ≥1piece

  • Model Number

    STC31

  • Data Sheet

  • Package

    Original packaging

  • Specs

    STC31

  • Quantity

    - +

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Product Description

Product Summary：

    The STC3x sensor family is Sensirion’s series of Gas Concentration sensors designed for high-volume applications. The STC3x utilizes a revolutionized thermal conductivity measurement principle, which results in superior repeatability and long-term stability.

    This make the STC31 a perfect choice for applications where reliability is key.

    The sensor features a digital I2C interface, which makes it easy to connect directly to a microprocessor.

    The outstanding performance of these sensors is based on Sensirion’s patented CMOSens® sensor technology, which combines the sensor element, signal processing and digital calibration on a small CMOS chip. The well-proven CMOS technology is perfectly suited for high-quality mass production and is the ideal choice for demanding and cost-sensitive OEM applications.

 

Benefits of Sensirion’s CMOSens® Technology：

• 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

 

Specifications：

1.Electrical Specifications

Parameter

Symbol

Condition

Min.

Typ.

Max.

Units

Comments

Supply Voltage

VDD

 

2.7

3.3

5.5

V

Sensor is calibrated at 3.3V

Power-up/down level

VPOR

 

2.3

2.5

2.7

V

 

Supply current

IDD

Measuring

 

3

5

mA

 

Idle state

 

50

 

uA

 

Sleep mode

 

 

1

uA


2.Timings

Parameter

Symbol

Condition

Min.

Typ.

Max.

Units

Comments

Power-up time

tPU

 

 

 

14

ms

Time to sensor ready

Soft reset time

tSR

 

 

 

12

ms

Time between soft reset command or exit sleep mode and sensor ready

I2C SCL frequency

fI2C

 

 

400

1000

kHz

 

Measurement time

concentration

 

 

 

 

66

ms

Measurement result is returned together with temperature value


3.Mechanical Specifications

Parameter

Symbol

Condition

Min.

Typ.

Max.

Units

Comments

Weight

W

 

 

 

0.025

g


4.Materials

Parameter

 

REACH, RoHS

REACH and RoHS compliant


5.Absolute Minimum and Maximum Ratings（1）

Parameter

Rating

Units

Supply Voltage VDD

-0.3 to 5.5

V

Max Voltage on pins (SDA, SCL)

-0.3 to VDD+0.3

V

Input current on any pin

±70

mA

Operating temperature range

-20 to +85

℃

Storage temperature range

-20 to +85

℃

Operating absolute pressure range

600 to 1200

mbar

Max. humidity for long term exposure

40℃ dew point

 

ESD HBM (human body model)

2

kV

Media Compatibility

Non corrosive gases

（1） For other ranges contact Sensirion


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