STC31-C-R3 - Sensirion

STC31-C-R3 Frequently Asked Questions (FAQs)

• What is the recommended PCB layout and land pattern for the STC31-C-R3?
  Sensirion provides a recommended PCB layout and land pattern in their application note AN17, which can be found on their website. It's essential to follow this layout to ensure proper thermal coupling and to minimize thermal resistance.
• How do I calibrate the STC31-C-R3?
  The STC31-C-R3 is a calibrated sensor, and no additional calibration is required. However, if you need to perform a custom calibration, Sensirion provides a calibration protocol in their application note AN19. It's essential to follow this protocol to ensure accurate temperature measurements.
• What is the maximum operating temperature range for the STC31-C-R3?
  While the datasheet specifies an operating temperature range of -20°C to 125°C, it's essential to note that the sensor's accuracy and reliability may degrade above 100°C. For high-temperature applications, it's recommended to consult with Sensirion's technical support team for guidance.
• Can I use the STC31-C-R3 in a humid or high-moisture environment?
  The STC31-C-R3 is not designed for use in humid or high-moisture environments. If you need to use the sensor in such an environment, you should take appropriate measures to protect it from moisture, such as using a conformal coating or a sealed enclosure. Consult with Sensirion's technical support team for guidance.
• What is the recommended power-up sequence for the STC31-C-R3?
  To ensure proper operation, it's recommended to power up the STC31-C-R3 in the following sequence: VDD, then VCC. This sequence helps to prevent latch-up and ensures that the sensor starts up correctly.