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HTU21P(F) is a humidity and temperature sensor.Setting new standards in terms of size and intelligence, it is embedded in a reflow solderable Dual Flat No leads (DFN) package of 3 x 3 x 0.9 mm foot print.  This sensor provides calibrated, linearized signals in analog pulse width modulated (PWM) format. HTU21P(F) humidity sensors are dedicated humidity and temperature plug and play transducers for OEM applications where reliable and accurate measurements are needed. These low power sensors are designed for high volume and cost sensitive applications with tight space constraints. PWM signal runs on a base frequency of 120Hz, the data signal is provided on SDA line. Pulling SCL high or low allows for switching between humidity and temperature, respectively. The sensor measures twice per second. The PWM signal may be converted to an analog ratiometric interface by adding a low pass filter. 


  • DFN type package 
  • Relative Humidity and Temperature Analog Output, PWM interface
  • Fully calibrated 
  • Lead free sensor, reflow solderable 
  • Low power consumption 
  • Fast response time  

Please review product documents or contact us for the latest agency approval information.  

Product Type Features

  • Product Type  RHT

  • Sensor Type  Digital

Electrical Characteristics

  • Supply Voltage (Peak) (V) 3.8

  • Current Consumption (mA) .014

Usage Conditions

  • Operating Temperature Range -40 – 125 °C [ -40 – 257 °F ]

  • Humidity Operating Range (%RH) 0 – 100

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