SHT40
±1.8% / max. ±3.5% RH Digital humidity and temperature sensor
<p><span style="background-color:rgb(255,255,255);color:rgb(0,0,0);">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. </span></p><p> </p><p><span style="background-color:rgb(255,255,255);color:rgb(0,0,0);">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™.</span></p>
Specification
| Humidity | |||
|---|---|---|---|
| Typ. relative humidity accuracy
1.8
| 1.8 | %RH | |
| Operating relative humidity range
0 - 100
| 0 - 100 | %RH | |
| Response time (τ63%)
4
| 4 | s | |
| Calibration certificate
Factory calibration
| Factory calibration |
| Temperature | |||
|---|---|---|---|
| Typ. temperature accuracy
0.2
| 0.2 | °C | |
| Operating temperature range [°C]
-40 - 125
| -40 - 125 | °C | |
| Response time (τ63%)
2
| 2 | s |
| Generic | |||
|---|---|---|---|
| Supply voltage
1.08 - 3.6
| 1.08 - 3.6 | V | |
| Average supply current
0.4
| 0.4 | uA | |
| Interfaces
I²C
| I²C | ||
| Size (LxWxH)
1.5 x 1.5 x 0.5
| 1.5 x 1.5 x 0.5 | mm³ | |
| Packaging size
2500, 10000
| 2500, 10000 | pcs (T&R) |
Downloads
Accessories
| Name | Description | Series | Category |
|---|---|---|---|
 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
| Name | Description | Series | Category |
|---|---|---|---|
 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
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How to get startedLatest Humidity sensors
SHT40I-BD1B
±2% Digital humidity and temperature sensor / 0x45 I2C Output
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SHT40-CD1B
±1.8% / max. ±3.5% RH Digital humidity & temp. sensor / 0x46 I2C Output
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SHT40-BD1B
±1.8% / max. ±3.5% RH Digital humidity & temp. sensor / 0x45 I2C Output
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SHT41A-BD1B
±2% humidity sensor for automotive applications / I2C interface
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SHT41A-FD1B
±2% humidity sensor for automotive applications / PWM interface
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SHT43
Digital humidity sensor with ISO17025 certification
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SEK-SHT40-AD1F
Evaluation kit for SHT40 humidity sensor with filter membrane
- Evaluation kit
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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.