SHT21 Digital Humidity Temperature Sensors
Features:
- Fully Calibrated: Provides accurate and reliable measurement data.
- Digital Output: Utilizes I²C interface for easy integration with microcontrollers and other digital devices. Analog output mode (PWM) available upon request.
- Low Power Consumption: Operates at less than 3μW in normal mode, with further reduction possible by extending measurement intervals.
- Excellent Long-Term Stability: Encapsulation molding process enhances resistance to aging and environmental factors.
- Automotive-Grade Reliability: Complies with AEC-Q100 automotive industry standard.
Technical Parameters:
Electrical Specifications:
- Supply Voltage: 2.1 - 3.6V
- Supply Current:
- Sleep Mode: 0.15 - 0.4μA
- Measurement: 200 - 330μA
- Average Power Consumption (8-bit, 1 measurement/sec): 3.2μW
Measurement Performance:
- Humidity Range: 0 - 100%RH
- Temperature Range: -40 - 125°C
- Humidity Accuracy: ±2%RH (typical, 20 - 80%RH)
- Temperature Accuracy: ±0.3°C (typical, 25 - 42°C)
- Humidity Resolution:
- 12-bit: 0.04%RH
- 8-bit: 0.7%RH
- Temperature Resolution:
- 14-bit: 0.01°C
- 12-bit: 0.04°C
- Response Time:
- Humidity: 8s (τ63%)
- Temperature: 5 - 30s (τ63%)
Physical Characteristics:
- Package: DFN (Dual Flat No-Lead), 3x3x1.1mm³, reflow-solderable, tape-and-reel packaging for automated production.
Communication Protocol:
- Digital 2-Wire Interface: Fully compatible with I²C protocol.
- I²C Address: Fixed address for communication.
- Command Set: Includes measurement triggers, resolution configuration, and soft reset.
- Data Integrity: CRC checksum for error detection.
Application Fields:
- Consumer Electronics:
- Air conditioners, humidifiers, air purifiers for indoor climate control.
- Automotive Electronics:
- In-vehicle environmental monitoring and HVAC system optimization.
- Industrial Control:
- Precise temperature and humidity monitoring in manufacturing processes.
- Meteorological Monitoring:
- Weather stations and environmental sensors for atmospheric data collection.
Ordering Information:
- Package Options:
- Tape and reel packaging (1,500 or 5,000 units per reel).
- Compliance:
- RoHS, REACH, and AEC-Q100 certified.
| Package Size (L×W×H) | 3.0mm×3.0mm×1.1mm |
| Lead Pitch | 0.5mm |
| Weight | ~0.05g |
| Mounting Type | SMD (Surface Mount Device) |
