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SHT40

±1.8% / max. ±3.5% RH Digital humidity and temperature sensor

In line with Sensirion’s industry-proven humidity and temperature sensors, the SHT40 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 ideal for high-volume applications. 

 

The SHT40 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 mobile and battery-driven applications. The exceptionally small size in a robust DFN housing enables integration into challenging designs while meeting the highest reliability demands, as demonstrated by the JEDEC JESD47 qualification. On top of that, the SHT40 is compliant with the relevant healthy building standards RESET® and WELL Building Standard™.

See inventoryDistributor listContact 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 0.5
1.5 x 1.5 x 0.5mm
Packaging size
2500, 10000
2500, 10000pcs (T&R)

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

01/2025

File

109.5 KB

Certificate01/2025PDF109.5 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

11/2024

Link

7.7 MB

Flyer11/2024Link7.7 MB

Accessories

NameDescriptionSeriesCategory
SF2 filter capFilter cap for SHT2x to SHT4x humidity and temperature sensorsSFx filter capHumidity

SF2 filter cap

Filter cap for SHT2x to SHT4x humidity and temperature sensors

SFx filter cap

Humidity

Sensor evaluation

Buy the following products to evaluate this sensor

NameDescriptionSeriesCategory
SEK-SensorBridgeConnecting bridge with two sensor portsSEK-SensorBridge
SEK-SHT40Humidity and temperature evaluation kit SHT40SEK-SHTxxHumidity
SENSEVAL-SHT4XV1Evaluation Board for SHT4x Temperature and Humidity SensorSENSEVAL-SHT4XV1

SEK-SensorBridge

Connecting bridge with two sensor ports

SEK-SensorBridge

SEK-SHT40

Humidity and temperature evaluation kit SHT40

SEK-SHTxx

Humidity

SENSEVAL-SHT4XV1

Evaluation Board for SHT4x Temperature and Humidity Sensor

SENSEVAL-SHT4XV1

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.

  • All products
  • Humidity
  • SHT4x

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SHT43 humidity and temperature sensor demonstrator

±1.8% / max. ±2.5% RH digital humidity and temperature sensor with protective cover

±1.8% / max. ±3.5% RH digital humidity and temperature sensor with protective cover

ASIL-A safety element out of context humidity sensor

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

±1.8% / max. ±3.5% RH Digital humidity & temp. sensor / 0x46 I2C Output

±1.8% / max. ±3.5% RH Digital humidity & temp. sensor / 0x45 I2C Output