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
Converts temperature variations → digital signal
💧 Humidity 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: −40°C to +125°C
Accuracy: ±0.2°C (typical)
💧 Humidity
Range: 0–100% RH
Accuracy: ±1.8% RH (typical)
Resolution
High-resolution digital output
Fast measurement response
⚡ Electrical Characteristics
Supply 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
Stable long-term performance
🔄 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: −40°C to +125°C
Humidity: 0–100% RH
⚠️ Limitations
Sensitive to:
Condensation (heater helps mitigate)
Requires:
Proper airflow for accurate readings
Slight delay depending on measurement mode
🔌 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
Includes heater and multiple measurement modes
Is optimized for compact and low-power applications
