SHTC3 - Sensirion

SHTC3 Frequently Asked Questions (FAQs)

• What is the recommended reflow soldering profile for the SHTC3?
  Sensirion recommends a reflow soldering profile with a peak temperature of 260°C, a dwell time above 220°C of 30-60 seconds, and a cooling rate of 4°C/s or slower.
• How do I handle the SHTC3's sleep mode to minimize power consumption?
  To enter sleep mode, send the 'sleep' command (0xFF) to the sensor. The sensor will then enter a low-power state, consuming approximately 100 nA. To wake the sensor, send any valid command.
• What is the recommended layout and placement for the SHTC3 on a PCB?
  Place the SHTC3 near the edge of the PCB to minimize the impact of thermal gradients. Ensure good thermal coupling to the PCB by using a large copper area under the sensor. Avoid placing components that generate heat near the sensor.
• How do I calibrate the SHTC3 for optimal accuracy?
  The SHTC3 is calibrated during manufacturing, but you can perform a one-point calibration for temperature and humidity using the 'reset' command (0xFE) and then adjusting the offset values accordingly.
• What is the maximum cable length for I2C communication with the SHTC3?
  The maximum cable length for I2C communication with the SHTC3 is approximately 30 cm (12 inches) due to the capacitance of the cable, which can affect signal integrity.