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HTU21P(F) is a digital humidity and temperature sensor for OEM applications. Setting the standard 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  
  • Full interchangeability with no calibration required in standard conditions
  • Instantaneous desaturation after long periods in saturation phase
  • Compatible with automatized assembly processes, including Pb free and reflow processes
  • Individual marking for compliance to stringent traceability requirements


  • Automotive: defogging, HVAC
  • Home Appliance
  • Medical
  • Printers
  • Humidifier
  1. HTU21 Humidity Temperature Sensor (English)

Learn how the HTU21 Humidity Temperature Sensors maintain constant conditions to increase efficiency and reduce waste in appliances like refrigerators.


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

Product Type Features

  • Humidity Sensor Component Product Type  RHT

  • Humidity Sensor Component Sensor Type  Analog

Electrical Characteristics

  • Supply Voltage (Peak) (V) 3.8

  • Current Consumption (mA) .014

Usage Conditions

  • Humidity Operating Range (%RH) 0 – 100

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

Reference Number

  • TE Internal Number CAT-HSC0005

Related Materials

Datasheets & Catalog Pages

Terms and Conditions

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This information has been provided to your free of charge for your use but remains the sole property of TE Connectivity Corporation (''TE'') or SnapEDA,  Inc. or Ultra Librarian/EMA Design Automation, Inc. (collectively, "Company"). While Company has used reasonable efforts to ensure its accuracy, Company does not guarantee that it is error-free, not makes any other representation, warranty, or guarantee that the information is completely accurate or up-to-date. In many cases, the CAD data has been simplified to remove proprietary detail while maintaining critical interface geometric detail for use by customers. Company expressly disclaims all implied warranties regarding this information, including but not limited to any implied warranties or merchantability or fitness for a particular purpose.