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Version 1.1 – April 2021

4/22

2 Specifications

2.1 Electrical Specifications

Parameter

Symbol Conditions

Min.

Typical

Max.

Units

Supply voltage DC

2.4

3.3 or 5.0 5.5

V

Voltage ripple peak to peak

30

mV

175

205

mA

115

137

mA

Average supply current for periodic

measurement, periodic measurement

15

18

mA

11

13

mA

Average supply current for periodic

measurement, low power periodic measurement I

DD

3.2

3.5

mA

2.8

3

mA

Average supply current for periodic single shot

measurement, 1 measurement / 5 minutes

0.45

0.5

mA

0.36

0.4

mA

Input high level voltage

-

Input low level voltage

-

Output low level voltage

3 mA sink current

0.66

V

Table 4 SCD4x electrical specifications

2.2 Absolute Maximum Ratings

Stress levels beyond those listed in Table 5 may cause permanent damage to the device. Exposure to minimum/maximum

rating conditions for extended periods may affect sensor performance and reliability of the device.

Parameter

Conditions

Value

Temperature operating conditions

-10 – 60°C

Non-condensing

0 – 95 %RH

MSL Level

3

DC supply voltage

- 0.3 V – 6.0 V

Max voltage on pins SDA, SCL, GND

Input current on pins SDA, SCL, GND

- 280 mA to 100 mA

- 40°C – 70°C

Recommended storage temperature

10 °C – 50 °C

ESD HBM

2 kV

ESD CDM

500 V

Maintenance Interval

Maintenance free when ASC field-

None

Typical operating conditions

> 10 years

Table 5: SCD4x operation conditions, lifetime and maximum ratings

6

Power supply should be designed with respect to peak current.

7

On-demand measurement with freely adjustable interval. See chapter 3.10

8

Accuracy can be reduced at relative humidity levels lower than 10 %.

9

Short term storage refers to temporary conditions during e.g. transport.

10

11

Sensor tested over simulated lifetime of > 10 years for indoor environment mission profile