Posted in | Hydrometers

Digital Humidity Sensor SHTC3 (RH/T)

The SHTC3 digital humidity sensor is an enhancement of the successful SHTC1 sensor from Sensirion. When compared to its predecessor, it offers higher accuracy (±2% RH, ±0.2 °C) and a wide supply voltage range (1.62–3.6 V), thereby ensuring greater flexibility.

Sensirion’s CMOSens® Technology delivers a comprehensive sensor system on a single chip, including a bandgap temperature sensor, A/D converter, a capacitive humidity sensor, calibration data memory, analog and digital signal processing, and a digital communication interface that supports I2C fast mode. The small DFN package measures just 2 x 2 x 0.75 mm3, thus allowing applications in even the most restricted space.

The sensor covers a temperature measurement range of −40 °C to 125 °C and a humidity measurement range of 0%–100% RH, with a typical accuracy of ±0.2 °C and ±2% RH, respectively. Thanks to an energy budget of less than 1 μJ per measurement and a wide supply voltage range of 1.62–3.6 V, the SHTC3 is ideally suited to wireless or mobile applications powered by battery.

The industry-proven quality and reliability of Sensirion’s humidity and temperature sensors offer constant accuracy over a wider measurement range, thereby enabling the SHTC3 to provide an excellent performance-price ratio. With the tape and reel packaging integrated with suitability for standard SMD assembly processes, the SHTC3 is best suited for high-volume applications.

Overview Specifications

Name Typ. Humidity Accuracy %RH Typ. Temperature °C Supply Voltage V Interface Package Size (L x W x H) mm
SHTC3 ±2.0% ±0.2 1.62 to 3.6 V I2C 2 x 2 x 0.75



  • Interface: I2C
  • Measuring range (RH): 0%–100% relative humidity
  • Supply voltage range: 1.62–3.6 V
  • Measuring range (T): −40 °C to +125 °C (−40 °F to +275 °F)
  • Current consumption: 0.5 μA (at 1 reading per second in low power mode)
  • Response time (RH): 8s (tau63%)

Delivery Conditions

  • Packaging: Tape and reel, sealed in ESD bags
  • Minimum order quantity: 2,500 pieces
  • Packaging sizes: 2,500 or 10,000 pieces per reel

Accuracy Limits for Relative Humidity and Temperature

Accuracy Limits for Relative Humidity and Temperature

Accuracy Limits for Relative Humidity and Temperature

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