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SHT40-AD1F

±1.8% RH humidity sensor with membrane / 0x44 I2C Output

In line with Sensirion’s industry-proven humidity and temperature sensors, the SHT40-AD1F offers the best price-performance ratio on the market. Tape and reel packaging combined with its suitability for standard SMD assembly processes make the SHT40-AD1F ideal for high-volume applications. 

 

The SHT40-AD1F builds on a completely new and optimized CMOSens® chip that offers reduced power consumption and improved accuracy specifications. With the extended supply voltage range from 1.08 V to 3.6 V, it’s the perfect fit for consumer and battery-driven applications. The integrated SHT40-AD1F PTFE membrane provides additional protection from particles, and enables sensor operation in harsh conditions. On top of that, the SHT40-AD1F is compliant with the relevant healthy building standards RESET® and WELL Building Standard™.

Contact sales

Specification

Humidity
Typ. relative humidity accuracy
1.8
1.8%RH
Operating relative humidity range
0 - 100
0 - 100%RH
Response time (τ63%)
4
4s
Calibration certificate
Factory calibration
Factory calibration
Temperature
Typ. temperature accuracy
0.2
0.2°C
Response time (τ63%)
2
2s
Generic
Supply voltage
1.08 - 3.6
1.08 - 3.6V
Average supply current
0.4
0.4uA
Operating temperature range [°C]
-40 - 125
-40 - 125°C
Interfaces
I²C
I²C
Size (LxWxH)
1.5 x 1.5 x 0.69
1.5 x 1.5 x 0.69mm

Downloads

Datasheet SHT4x

04/2025

File

915.1 KB

Datasheet04/2025PDF915.1 KB
Creep mitigation SHT4xX

05/2022

File

277.8 KB

Application note05/2022PDF277.8 KB
Handling instructions SHT

06/2025

File

470.2 KB

Application note06/2025PDF470.2 KB
Heater decontamination SHT4xX

02/2024

File

386.5 KB

Application note02/2024PDF386.5 KB
Humidity at a glance

05/2025

File

204.6 KB

Application note05/2025PDF204.6 KB
Introduction to humidity

08/2009

File

224.9 KB

Application note08/2009PDF224.9 KB
Specification statement and testing humidity sensors

04/2021

File

306.8 KB

Application note04/2021PDF306.8 KB
Testing at ambient conditions SHT

10/2022

File

443.0 KB

Application note10/2022PDF443.0 KB
Contamination guide for humidity and temperature sensors

10/2024

File

849.1 KB

Guide10/2024PDF849.1 KB
Contamination guide for humidity and temperature sensors Chinese

11/2024

File

2.9 MB

Guide11/2024PDF2.9 MB
Design-in guide SHT/STS

04/2024

File

822.1 KB

Guide04/2024PDF822.1 KB
Design-in guide SHT/STS Chinese

06/2024

File

1.2 MB

Guide06/2024PDF1.2 MB
Transition guide for SHT3x to SHT4x

05/2024

File

411.2 KB

Guide05/2024PDF411.2 KB
Transition guide for SHTC1 to SHT4x

12/2023

File

387.3 KB

Guide12/2023PDF387.3 KB
Transition guide for SHTC3 to SHT4x

12/2023

File

388.1 KB

Guide12/2023PDF388.1 KB
Transition guide for SHTW2 to SHT4x

08/2020

File

347.9 KB

Guide08/2020PDF347.9 KB
Embedded drivers humidity

Link

SoftwareLink
SEK-ControlCenter (all devices)

Link

SoftwareLink
Calibration certification SHT/STS

08/2021

File

110.4 KB

Certificate08/2021PDF110.4 KB
REACH and RoHS declaration SHT/STS

12/2025

File

101.1 KB

Certificate12/2025PDF101.1 KB
Humidity product flyer

10/2024

File

1.0 MB

Flyer10/2024PDF1.0 MB
Humidity product flyer Chinese

03/2025

File

933.3 KB

Flyer03/2025PDF933.3 KB
Humidity product flyer Japanese

05/2025

File

3.7 MB

Flyer05/2025PDF3.7 MB
Indoor air quality brochure

11/2025

File

7.0 MB

Flyer11/2025PDF7.0 MB

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.

  • All products
  • Humidity sensors
  • SHT4x
New

Sensor evaluation

Buy the following products to evaluate this sensor

NameDescriptionSeriesCategory
SEK-SHT40Humidity and temperature evaluation kit SHT40SEK-SHTxxHumidity sensors

SEK-SHT40

Humidity and temperature evaluation kit SHT40

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
  • Home
  • Products
  • Product catalog
  • SHT40-AD1F
Packaging size
2500, 10000
2500, 10000
pcs (T&R)

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