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  • All products
  • Humidity sensors
  • SHT4xI

SHT40I-BD1B

New

±2% Digital humidity and temperature sensor / 0x45 I2C Output

Sensirion expands its 4th generation humidity sensing series with the digital SHT4xI sensor platform which has been specifically designed for challenging industrial applications. The series consists of two accuracy versions SHT40I and SHT41I, offering 5V supply voltage, the best robustness and increased ESD protection. The SHT4xI is based on Sensirion’s proven CMOSens® Technology, which ensures the highest reliability. The sensor enables seamless integration with its wide operating voltage range, small size and robust housing. Based on its features and Sensirion’s advanced expertise in humidity sensing, the SHT4xI is the perfect fit for measurements under rough conditions in industrial applications.
See inventoryContact sales

Specification

Humidity
Typ. relative humidity accuracy
2
2%RH
Operating relative humidity range
0 - 100
0 - 100%RH
Response time (τ63%)
4
4s
Temperature
Typ. temperature accuracy
0.2
0.2°C
Response time (τ63%)
2

Downloads

Datasheet SHT4xI-Digital
  • 02/2025•
  • PDF•
  • 800.8 KB
Datasheet02/2025PDF800.8 KB
Creep mitigation SHT4xX
  • 05/2022•
  • PDF•
  • 277.8 KB
Application note05/2022PDF277.8 KB
Handling instructions SHT
  • 06/2025•
  • PDF•
  • 470.2 KB
Application note06/2025PDF470.2 KB
Humidity at a glance
  • 05/2025•
  • PDF•
  • 204.6 KB
Application note05/2025PDF204.6 KB
Introduction to humidity
  • 08/2009•
  • PDF•
  • 224.9 KB
Application note08/2009PDF224.9 KB
Specification statement and testing humidity sensors
  • 04/2021•
  • PDF•
  • 306.8 KB
Application note04/2021PDF306.8 KB
Testing at ambient conditions SHT
  • 10/2022•
  • PDF•
  • 443.0 KB
Application note10/2022PDF443.0 KB
Water Activity Measurement aW
  • 04/2023•
  • PDF•
  • 182.0 KB
Application note04/2023PDF182.0 KB
Contamination guide for humidity and temperature sensors
  • 10/2024•
  • PDF•
  • 849.1 KB
Guide10/2024PDF849.1 KB
Contamination guide for humidity and temperature sensors Chinese
  • 11/2024•
  • PDF•
  • 2.9 MB
Guide11/2024PDF2.9 MB
Design-in guide SHT/STS
  • 04/2024•
  • PDF•
  • 822.1 KB
Guide04/2024PDF822.1 KB
Design-in guide SHT/STS Chinese
  • 06/2024•
  • PDF•
  • 1.2 MB
Guide06/2024PDF1.2 MB
Embedded drivers humidity
  • Link•
SoftwareLink
SEK-ControlCenter (all devices)
  • Link•
SoftwareLink
Calibration certification SHT/STS
  • 08/2021•
  • PDF•
  • 110.4 KB
Certificate08/2021PDF110.4 KB
Humidity product flyer
  • 10/2024•
  • PDF•
  • 1.0 MB
Flyer10/2024PDF1.0 MB
Humidity product flyer Chinese
  • 03/2025•
  • PDF•
  • 933.3 KB
Flyer03/2025PDF933.3 KB
Humidity product flyer Japanese
  • 05/2025•
  • PDF•
  • 3.7 MB
Flyer05/2025PDF3.7 MB
Close

SHT40I-BD1B

SHT40I-BD1B-R3

Close
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2
s
Generic
Supply voltage
2.3 - 5.5
2.3 - 5.5V
Average supply current
21
21uA
Operating temperature range [°C]
-40 - 125
-40 - 125°C
Interfaces
I²C
I²C
Size (LxWxH)
1.5 x 1.5 x 0.5
1.5 x 1.5 x 0.5mm
Packaging size
10000
10000pcs (T&R)

Sensor evaluation

Buy the following products to evaluate this sensor

NameDescriptionSeriesCategory
SEK-SHT40IDigital humidity and temperature evaluation kitSEK-SHTxxHumidity sensors

SEK-SHT40I

Digital humidity and temperature evaluation kit

SEK-SHTxx

Humidity sensors

Download the respective viewer software to start measuring

Go to download center

Start testing our sensors fast and easy with the evaluation kits

How to get started

Smart sensors for your application

Sensirion's sensor solutions are used in a wide range of applications and markets. Our reliable environmental and flow sensors improve energy efficiency, increase health and ensure safety and comfort.

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Global Distributors

Part numberQuantityDistributor nameCountryUploaded
SHT40I-BD1B-R312703DigiKeyDE, US, HK15.04.2026Buy
SHT40I-BD1B-R37346Mouser Electronics Inc.27 countries15.04.2026Buy

EMEA (Europe)

Part numberQuantityDistributor nameCountryUploaded
SHT40I-BD1B-R35000Glyn GmbH & Co. KgDE14.04.2026Buy

The Americas

Part numberQuantityDistributor nameCountryUploaded
SHT40I-BD1B-R310000Newark, An Avnet CompanyUS15.04.2026Buy