SENSHT40I-AD1B-R2
Overview
The SHT40I-AD1B-R2 is a high-precision digital humidity and temperature sensor specifically designed for demanding industrial applications. It offers a wide supply voltage range from 2.3V to 5.5V and communicates via a standard I2C interface with 16-bit resolution. The sensor is fully functional in condensing environments and is housed in a compact 4-WDFN package measuring 1.5 x 1.5 mm.
Why Choose This Part
This sensor provides an excellent balance of precision and durability with a typical relative humidity accuracy of +/-1.8 percent. It features a fast 4-second response time and is engineered to maintain functionality even after exposure to condensing conditions, making it suitable for harsh environments.
Applications
Key Specifications
Getting Started
To evaluate this sensor, engineers can use the Sensirion SEK-SHT4x evaluation kit which connects to a PC via the SEK-SensorBridge. Implementation requires a standard I2C bus with pull-up resistors, and sample code is widely available through Sensirion's GitHub repositories for various MCU platforms.
SHT40 Family
Comparing specs that differ across variants. The current part is highlighted.
| Part Number | Accuracy | Package | Voltage | Stock |
|---|---|---|---|---|
| SHT40I-AD1B-R2 (this part) | +/-1.8% RH | WDFN-4 | 2.3V | 6,596 |
| SHT40-BD1B-R3 | +/-1.8% RH | UDFN-4 | 1.08V | 13,394 |
| SHT40-AD1F-R2 | +/-1.8% RH | WDFN-4 | 1.08V | 20,597 |
| SHT40-AD1B-R2 (Sensirion) | +/-1.8% RH | WDFN-4 | 1.08V | 13,291 |
| SHT40-AD1B-R3 (Sensirion) | +/-1.8% RH | WDFN-4 | 1.08V | 58,954 |
| SHT40A-AD1B-R3 | +/-2% RH | UDFN-4 | 2.3V | — |
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