High-precision version of the world’s smallest digital humidity sensor

In April 2010 Sensirion (Switzerland) started serial production of the SHT21, the standard version of its new generation of digital humidity and temperature sensors. Now the sensor manufacturer is launching a high-precision version for applications with stringent accuracy requirements. The SHT25 rounds out the family of digital humidity sensors, in the same way as the high-end versions of the SHT1x and SHT7x series. This represents a milestone on the product roadmap of the world’s smallest digital humidity sensors.

The sensor achieves a typical accuracy of 1.8% RH (at 25°C) for relative humidity and 0.2°C for temperature. For both quantities, the tolerance is small even at the limits of the measuring range. The SHT25 is fully calibrated and exactly matches the other specifications of the SHT21. Among other things, the reflow-solderable SHT25 has an I2C interface and features outstanding stability along with extremely low power consumption.