New Humidity Sensor

Sensirion (Switzerland’s) new SHT21 humidity and temperature sensor has now been qualified in accordance with the AEC-Q100 automotive standard. This confirms the outstanding reliability,
stability and robustness of the sensor, which has been in regular production since April 2010.

During the qualification process, the SHT21 was put through the relevant series of tests. Its aging resistance was confirmed by the High Temperature Operating Lifetime (HTOL) test, and its stress resistance was demonstrated by the Unbiased Highly Accelerated Stress Test (UHST). Furthermore, a Temperature Cycling (TC) test confirmed the compatibility of the packaging material with the chip and substrate, and the Electrostatic Discharge (ESD) and Electromagnetic Compatibility (EMC) tests proved the robustness of the sensor with regard to these parameters.

The SHT21 humidity sensor passed all the tests without any permanent changes to its characteristics and therefore fulfilled the quality requirements of the AEC-Q100 automotive standard. This qualification, along with the reliability, stability and robustness it certifies, allows users to employ the SHT21 with confidence and the assurance of proper, trouble-free operation.