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SHT40-AD1F-R2

SENSHT40-AD1F-R2

Sensirion AG
Humidity, Temperature 0 ~ 100% RH I2C ±1.8% RH 4 s Surface Mount
Active20,597 in stock
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Overview

The Sensirion SHT40-AD1F-R2 is a high-accuracy, low-power digital humidity and temperature sensor. It offers a wide humidity measurement range from 0 to 100% RH and a temperature range from -40 to 125 degrees C. Housed in a compact 4-pin DFN package, it communicates via an I2C interface, making it suitable for various embedded applications requiring reliable environmental monitoring.

Why Choose This Part

Engineers benefit from the SHT40-AD1F-R2's high accuracy of +/-1.8% RH and robust performance across a broad operating temperature range of -40 to 125 degrees C. Its low sleep current of 0.08 uA extends battery life in power-constrained applications, while the integrated PTFE membrane provides protection in harsh environments. The I2C interface simplifies integration with microcontrollers.

Applications

IoT Devices and Smart Home
Ideal for smart thermostats, air quality monitors, and other connected devices due to its small size, low power consumption, and reliable I2C interface for data acquisition.
HVAC Systems
Used in heating, ventilation, and air conditioning systems for precise climate control and monitoring of environmental conditions.
Industrial Process Control
Suitable for monitoring humidity and temperature in manufacturing processes, data centers, and storage facilities where environmental stability is critical.
Medical and Healthcare Devices
Its accuracy and compact form factor make it useful in medical devices requiring environmental sensing, such as incubators or diagnostic equipment.
Wearable Technology
The low power consumption and small footprint benefit wearable devices that monitor personal comfort or environmental exposure.

Key Specifications

Accuracy +/-1.8% RH
Output Type I2C
Sensor Type Humidity, Temperature
Mounting Type Surface Mount
Response Time 4 s
Humidity Range 0 ~ 100% RH
Package / Case 4-WDFN Exposed Pad
Voltage - Supply 1.08V ~ 3.6V
Operating Temperature -40degC ~ 125degC
Supplier Device Package 4-DFN (1.5x1.5)

Getting Started

To get started with the SHT40-AD1F-R2, connect it to a microcontroller via its I2C interface. Libraries and example code are often available for popular development platforms like Arduino or Raspberry Pi, simplifying I2C communication and sensor data retrieval. Sensirion provides detailed datasheets and application notes that offer guidance on hardware integration and software implementation.

SHT40 Family

Comparing specs that differ across variants. The current part is highlighted.

Part Number Package Stock
SHT40-AD1F-R2 (this part) WDFN-4 20,597
SHT40-BD1B-R3 UDFN-4 13,394
SHT40-AD1B-R2 (Sensirion) WDFN-4 13,297
SHT40-AD1B-R3 (Sensirion) WDFN-4 58,954

Also Consider

SHT31-DIS-B2.5KS SENSensirion AG - This is a popular alternative from Sensirion, offering similar humidity and temperature sensing capabilities with high accuracy.
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