www.sensirion.com / D1

Version 2

– July 2021

6/17

Figure 6: SHT40 typical and maximal

temperature accuracy.

Figure 7: SHT41 typical and maximal

temperature accuracy.

2.3 Recommended Operating Conditions

The sensor shows best performance when operated within the recommended normal temperature

and humidity range of 5 °C

… 60 °C and 20 %RH … 80 %RH, respectively. Long term exposure to

conditions outside recommended normal range, especially at high relative humidity, may

temporarily offset the RH signal (e.g. +3 %RH after 60 h at > 80 %RH). After returning into the

recommended normal temperature and humidity range the sensor will recover to within

specifications by itself. Prolonged exposure to extreme conditions may accelerate ageing.

To ensure stable operation of the humidity sensor, the conditions described in the document

(Sensirion, 2020) regarding exposure to volatile organic compounds must be met. Please note as

well that this does apply not only to transportation and manufacturing, but also to operation of the

SHT4x.

3 Electrical Specifications

Valid for all electrical specifications: Typical values correspond to VDD = 3.3 V and T = 25 °C. Min.

and max. values are valid in the full temperature range -40

°C … 125 °C and at declared VDD levels.

±0.0

±0.2

±0.4

±0.6

±0.8

±1.0

-40

-20

0

20

40

60

80

100 120

Temperature (°C)

SHT40 typ

SHT40 max

DT (°C)

±0.0

±0.2

±0.4

±0.6

±0.8

±1.0

-40 -20

0

20

40

60

80

100 120

Temperature (°C)

SHT41 typ

SHT41 max

DT (°C)