Overview

HTU21P(F) is a humidity and temperature sensor for OEM applications. 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. 

Benefits

  • 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

Applications

  • 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.

HTU21P(F) Sensor Dimensions Infographic
HTU21P(F) Infographic

HTU21P(F) Sensor Dimensions

Features

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

Product Type Features

  • Product Type  RHT

  • Sensor Type  Analog

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

Related Materials

Catalog Pages/Data Sheets

Terms and Conditions

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Disclaimer:
This information has been provided to you free of charge for your use but remains the sole property of TE Connectivity Corporation ("TE"). While TE has used reasonable efforts to ensure its accuracy, TE does not guarantee that it is error-free, nor 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. TE expressly disclaims all implied warranties regarding this information, including but not limited to any implied warranties or merchantability or fitness for a particular purpose.