7Semi 1.27mm Pitch SHT41 Temperature & Humidity Sensor Breakout

7Semi 1.27mm Pitch SHT41 Temperature & Humidity Sensor Breakout Technical Information

Overview

The module is based on the Sensirion SHT41 temperature and humidity sensor IC, a compact, high-precision digital environmental sensor.

• Measures:

  • Temperature

  • Relative Humidity (RH)

   

• Output:

  • Fully calibrated digital data via I2C

   

• Special feature:

  • 1.27 mm pitch compact breakout (fine-pitch design)

   

Designed for space-constrained and high-accuracy applications.

Working Principle

Temperature Measurement

• Uses bandgap temperature sensing

• Convery Measurement

  • Uses a capacitive polymer sensing element

  • Moisture absorption changes capacitance

  • Converted into RH value

   

  Digital Processing

  • Internal circuitry:

    • Amplifies signals

    • Performs ADC conversion

    • Applies factory calibration

     

  Outputs ready-to-use digital temperature and humidity data.

  Measurement Characteristics

  Temperature

  • Range: 40C to +125C

  • Accuracy: 0.2C (typical)

   

  Humidity

  • Range: 0100% RH

  • Accuracy: 1.8% RH (typical)

   

  Resolution

  • High-resolution digital output

  • Fast measuremently voltage: 1.08V to 3.6V

  • Very low power consumption

  • Suitable for:

    • Battery-powered systems

     

   

  Communication Interface

  • Interface: I2C (two-wire)

  • Default address: 0x44

   

  Simple integration with microcontrollers.

  Internal Features

  Factory Calibration

  • Fully calibrated during manufacturing

  • No external calibration required

   

  Integrated Heater

  • Built-in micro-heater:

    • Removes condensation

    • Improves reliability in humid environments

     

  Fast Measurement Modes

  • Multiple modes:

    • High precision

    • Medium precision

    • Low power

     

  Low Drift

  Operating Behavior

  Measurement Cycle

  • Sensor receives I2C command

  • Performs sensing internally

  • Outputs digital data

   

  Environmental Compensation

  • Maintains accuracy across varying conditions

  Rapid Response

  • Suitable for real-time monitoring

  Mechanical Characteristics

  • 1.27 mm pitch header

    • Compact PCB footprint

    • Suitable for dense electronics

     

  Environmental Characteristics

  • Operating conditions:

    • Temperature: 40C to +125C

    • Humidity: 0100% RH

     

  Limitations

  • Sensitive to:

    • Condensation (heater helps mitigate)

     

  • Requires:

   

  Typical Pin Configuration

  • VCC Power supply

  • GND Ground

  • SDA I2C data

  • SCL I2C clock

   

  Functional Role

  The module acts as a:

  • Temperature sensor

  • Humidity sensor

  • Compact environmental sensing device

   

  Summary

  The 7Semi SHT41 (1.27mm Pitch) Breakout is a compact, high-accuracy environmental sensor module that:

  • Measures temperature and humidity with high precision

  • Uses capacitive humidity + bandgap temperature sensing

  • Provides digital I2C output

     

  • Is optimized for compact and low-power applications