SHT20 Digital Temperature Humidity Sensor  

Features:

• High Precision:
• Humidity: Typical accuracy ±3%RH.
• Temperature: Typical accuracy ±0.3°C.
• Wide Voltage Range: Operates at 2.1V to 3.6V, suitable for diverse applications.
• Low Power Consumption: Ideal for battery-powered devices (e.g., sleep mode current as low as 0.15–0.4μA).
• Digital Output: Adopts standard I²C interface for easy connection to microcontrollers and digital devices.
• Configurable Resolution: Resolution adjustable via commands (max. 12/14-bit for humidity/temperature, min. 8/12-bit).
• High Reliability: Each sensor individually calibrated and tested, with excellent long-term stability and checksum function for reliable communication.

Technical Parameters:

• Measurement Range:
  • Humidity: 0–100%RH.
  • Temperature: -40–125°C.
• Response Time:
  • Humidity: 8s (τ63%).
  • Temperature: 5–30s (τ63%).
• Supply Current:
  • During measurement: Typical 300μA, max. 330μA.
  • Sleep mode: Typical 0.15–0.4μA.
• Package Specifications:
  • Available in 1,500 or 5,000-piece reels.
  • DFN (Dual Flat No-Lead) package: 3×3×1.1mm³, reflow-soldering compatible.

Application Fields:

• Data Loggers: Collect environmental temperature and humidity data for analysis.
• Transmitters: Convert temperature/humidity signals to standard formats for long-distance transmission.
• Automated Process Control: Precisely monitor and control environmental conditions in industrial production.
• Automotive Industry: Used for in-vehicle environment monitoring and air conditioning system control.
• Building Control & HVAC: Monitor and regulate indoor climate for comfort and energy efficiency.
• Power Industry: Monitor temperature/humidity in power equipment operation environments for safety.
• Metering & Testing: Serve as standard temperature/humidity measurement devices for calibration.
• Pharmaceutical Industry: Monitor storage and production environments to ensure quality.

Additional Notes:

• Communication Protocol:
• I²C address: 0x40 (default).
• Commands include measurement triggers (e.g., 0xF3 for temperature, 0xF5 for humidity) and soft reset (0xFE).
• Certifications: RoHS compliant, meets REACH standards.
• Datasheet Reference: For detailed timing diagrams and application circuits, refer to Sensirion's official documentation (e.g., SHT20 Datasheet V5.0).