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TE Connectivity


TE Connectivity (TE) provides a range of combined relative humidity and temperature sensors which produce accurate digital or analog outputs.

They include the HTU21D, a digital combined relative humidity and temperature sensor in a low-profile DFN package with a small 3mm x 3mm footprint.

The sensor provides linear measurement outputs in a digital format over an I²C interface.

TE’s polymer sensor materials combined with an optimized calibration slope and accurate offset give reliable, consistent performance even in the most demanding conditions.

Every unit is individually calibrated and tested: a lot identification mark is printed on the sensor and an electronic identification code is stored on the chip for easy traceability.

The adjustable resolution of the HTU21D’s measurements can be configured by the system designer, from 8- up to 12-bit resolution for relative humidity, and from 12- to 14-bit resolution for temperature. The measurement range of the relative humidity sensor is 0-100%. The temperature sensor operates between -40°C and 125°C.

Other relative humidity and temperature sensors from TE include the analog HTU20P, and a digital part, the HTU20DF, which is suitable for use in harsh environments.

  • Low power consumption
  • Fast response time
  • Instantaneous desaturation after long periods in saturation phase
  • Heating, Ventilation and Air Conditioning (HVAC) equipment
  • Refrigerators and freezers
  • Dryers
  • Dishwashers
  • Printers


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