AHT20-F High-Precision Miniaturized Digital Humidity Temperature Sensor For Consumer Electronics Industrial Automation
1. Core Product Features:
- High Measurement Accuracy: Delivers exceptional precision across typical operating ranges—humidity accuracy of ±2% RH (at 25℃, 20%-80% RH) and temperature accuracy of ±0.3℃ (at 25℃), ensuring reliable data for critical applications.
- Wide Detection Range: Adapts to diverse environmental conditions with a humidity measurement range of 0%-100% RH and a temperature measurement range of -40℃ to +85℃.
- Low Power Consumption: Features ultra-low power design—only 2.7μA in sleep mode and 70μA during active measurement (typical values at 3.3V), ideal for battery-powered devices (e.g., portable weather stations, smart wearables).
- Compact SMD Package: Utilizes a small SMD (Surface Mount Device) package (3mm × 3mm × 1.0mm), saving PCB space and simplifying automated assembly in high-volume production.
- Digital I2C Interface: Communicates via the industry-standard I2C bus (supporting 100kHz standard mode and 400kHz fast mode), enabling direct connection to microcontrollers (MCUs) like Arduino, STM32, and ESP32 without complex signal conversion.
- Built-in Self-Calibration: Equipped with on-chip factory-calibrated coefficients, eliminating the need for manual calibration by users and ensuring consistent performance across batches.
- Stable Long-Term Performance: The sensing element is protected by a robust encapsulation, resisting interference from dust, oil, and common chemicals, resulting in low drift and a long service life (typical 5 years under normal operating conditions).
2. Typical Applications:
- Consumer Electronics: Smart home devices (e.g., smart thermostats, humidifiers, air purifiers), wearable devices (e.g., fitness trackers, smart watches), and refrigerators (to monitor internal humidity/temperature).
- Industrial Automation: HVAC (Heating, Ventilation, and Air Conditioning) systems, warehouse environmental monitoring (for food, or electronic components), and printing/packaging process control.
- Medical Equipment: Medical refrigerators, incubators, and wearable health monitors (to ensure stable environmental conditions for drugs or patient care).
- Agriculture & Horticulture: Greenhouse environmental monitoring (to optimize humidity/temperature for crop growth) and soil moisture-temperature integrated detection systems.
- Automotive Electronics: In-car air quality monitoring systems and battery management systems (to prevent condensation damage to electronic components).
|
Parameter Category
|
Parameter Name
|
Specification
|
| Humidity Measurement |
Measuring Range |
0% - 100% RH |
| |
Accuracy (25℃) |
±2% RH (20% - 80% RH); ±3% RH (0% - 20% RH, 80% - 100% RH) |
| |
Resolution |
0.024% RH |
| |
Repeatability |
±0.5% RH |
| Temperature Measurement |
Measuring Range |
-40℃ - +85℃ |
| |
Accuracy (25℃) |
±0.3℃; ±0.5℃ (-20℃ - +60℃); ±1.0℃ (-40℃ - -20℃, +60℃ - +85℃) |
| |
Resolution |
0.01℃ |
| |
Repeatability |
±0.1℃ |
| Electrical Characteristics |
Supply Voltage |
2.2V - 5.5V DC |
| |
Operating Current (Active) |
Typ. 70μA (3.3V, 25℃); Max. 100μA |
| |
Sleep Current |
Typ. 2.7μA (3.3V); Max. 5μA |
| |
Communication Interface |
I2C bus (100kHz standard mode / 400kHz fast mode) |
| |
I2C Slave Address |
Default: 0x38 (7-bit address; configurable via software for multi-sensor setups) |
| Mechanical & Environmental |
Package Type |
SMD (3.0mm × 3.0mm × 1.0mm) |
| |
Operating Temperature |
-40℃ - +85℃ |
| |
Storage Temperature |
-40℃ - +85℃ |
| |
Operating Humidity |
0% - 100% RH (non-condensing) |
| Performance |
Response Time (T63%) |
Humidity: ≤8s; Temperature: ≤5s (at 25℃, 60% RH → 33% RH, 1m/s airflow) |
| |
Long-Term Drift (per year) |
Humidity: ≤0.5% RH; Temperature: ≤0.1℃ |
| |
Service Life (typical) |
5 years (under normal operating conditions: 25℃, 40%-60% RH, no harsh chemicals) |
