Overview
ATH31 is embedded in a dual-row flat no-lead SMD package, which is suitable for reflow soldering, with 3.0×3.0mm bottom surface and 1.0mm height. The temperature and humidity signals can be read on different pins. The sensor outputs calibrated digital signals in standard IIC format.
WHT 20 is equipped with an ASIC chip, a MEMS capacitive humidity sensor and a temperature sensor. WHT 20 temperature and humidity sensors have been calibrated and tested on factory, and have excellent reliability and long-term stability.
Key Features
- High accuracy ±3.0% RH and ±0.5°C
- Wide power supply voltage range, from 2.0V to 5.5V
- SMD package suitable for reflow soldering
- Quick response and strong anti-interference ability
- Excellent long-term stability under high humidity condition
Applications
- Home appliance fields: home appliance, humidity control, HVAC, dehumidifiers, smart thermostats, and room monitors etc ;
- Industrial fields: automobiles, testing equipment, and automatic control devices;
- Other fields: data loggers, weather stations, medical and other related temperature and humidity detection devices.
Technical Specifications
| Parameter | Condition | Min | Typical | Max | Unit |
| Resolution | Typical | 0.01 | %RH | ||
| Accuracy error1 | Typical | ±3.0 | %RH | ||
| Max | See figure1 | %RH | |||
| Repeatability | ±0.1 | %RH | |||
| Hysteresis | ±1.0 | %RH | |||
| Non-linear | <0.1 | %RH | |||
| Response time2 | t63% | <8 | s | ||
| Scope of work | extended3 | 0 | 100 | %RH | |
| Prolonged Drift4 | Normal | <0.5 | %RH/yr |
