SHT40-AD1B-R2
Overview
The SHT40-AD1B-R2 is a high-accuracy digital humidity and temperature sensor from Sensirion's fourth-generation platform. It features a wide supply voltage range from 1.08V to 3.6V and communicates via a standard I2C interface in a compact 1.5mm x 1.5mm DFN package. This sensor is designed for high-volume applications where low power consumption and high reliability are critical.
Why Choose This Part
The SHT40 offers exceptional power efficiency with a typical measurement current of only 0.32mA and an idle current of 0.08 microamperes at room temperature. Its robust 4-WDFN package includes an exposed pad for improved thermal coupling, while integrated CRC checksums ensure data integrity in noisy environments.
Applications
Key Specifications
Getting Started
Integration requires a standard I2C bus connected to the 4-pin DFN package; note that the AD1B variant uses the 0x44 I2C address. Engineers can evaluate the sensor using the SEK-SHT40-AD1B-Sensors evaluation kit or Sensirion's ControlCenter software. Driver support is widely available through Sensirion's GitHub repositories for C, Python, and Arduino environments.
SHT40 Family
Comparing specs that differ across variants. The current part is highlighted.
| Part Number | Package | Stock |
|---|---|---|
| SHT40-AD1B-R2 (this part) | WDFN-4 | 13,387 |
| SHT40-BD1B-R3 (Sensirion AG) | UDFN-4 | 13,394 |
| SHT40-AD1F-R2 (Sensirion AG) | WDFN-4 | 20,597 |
| SHT40-AD1B-R3 | WDFN-4 | 59,057 |
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