High-Precision Digital Humidity and Temperature Sensing Element

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  • Humidity
  • Temperature
  • Dew Point


The digital humidity and temperature sensing element HTE501 offers an excellent measurement accuracy up to ±1.8 % RH (incl. hysteresis) and ±0.2 °C. The proven E+E sensor coating and the integrated constant current heater ensure a high level of reliability and durability of the sensing element even in harsh, dirty and condensing environments.

  • Humidity and temperature sensing element

    High level of measurement accuracy, wide range of applications
    The stated accuracy of the relative humidity measurement up to ±1.8 % (incl. hysteresis). Integrated hysteresis compensation ensures that the sensing element always keeps within its tolerance window, even when the humidity content rises or falls. With a temperature range of -40 °C to 135 °C, the HTE501 sensing element is suitable for a wide range of applications.

    Suitable for demanding operating conditions
    The active sensor surface is permanently protected against dirt and corrosive deposits by the proprietary E+E sensor coating. This special protective coating ensures excellent measurement performance and long-term stability even under demanding conditions. The sensing element can therefore be used in harsh environments without the need for additional protection.

    The integrated constant current heater, which can be activated as required, keeps the sensing element at an excess temperature and thus prevents condensation and deposits caused by condensation.

    Direct measured value output via I²C interface
    The measured value output is based on the I²C data communication protocol. The measured values are available in 16 bit integer format and can be processed directly. In addition to the humidity and temperature values, the dew point is also calculated and output directly. 8 individually adjustable I²C addresses make it possible to operate several sensing elements on one I²C bus.

    Simple design-in and evaluation kit
    The DFN enclosure of the HTE501 measures only 2.5 x 2.5 x 0.9 mm. This makes the sensing element suitable for demanding designs and tight spaces. The integrated I²C pull-up resistors further facilitate design-in, as no external circuitry is required.

      HTE301 HTE501
    Measurements Humidity, Temperature Humidity, Dew Point, Temperature
    Humidity range 0…100 % 0…100 %
    Accuracy humidity up to 1.8 % RH up to 1.8 % RH
    Integrated humidity hysteresis compensation yes yes
    Response time humidity (typ. τ63% ) 5 s 5 s
    Temperature range -40...125 °C -40...135 °C
    Accuracy temperature up to 0.2 °C up to 0.2 °C
    Response time temperature (min. τ63%) 2 s 2 s
    E+E proprietary coating yes yes
    Heater up to 16 mW up to 288 mW
    Direct dew point output - yes
    Alert output yes -
    Reset Pin yes -
    Supply Voltage 2.35 - 3.6 V 2.35 - 3.6 V
    Interface I²C, 16 bit  unsigned integer I²C, 16 bit signed integer 
    I²C pin selectable adresses up to 4 up to 8
    I²C Pull-up resistors (integrated) - yes
    Measurement mode Single shot (low power), periodic Single shot (low power), periodic
    Housing 8-pin DFN package 8-pin DFN package
    Dimensions (L x W x H) 2.5 x 2.5 x 0.9 mm 2.5 x 2.5 x 0.9 mm
    Packaging size (T&R) 2,500 pcs.  2,500 pcs. 

    Typical Applications

    • Automotive industry
    • Building automation
    • Consumer electronics
    • Home appliances
    • Industrial automation
    • Medical devices
    • Smart home
    • Wearable devices
    • White goods
    Humidity and temperature sensing element


    • Excellent measurement accuracy
    • E+E proprietary coating
    • Constant current heater
    • I²C interface with direct 16 bit integer output
    • 8-pin DFN package
    • I²C interface with pin-selectable addresses
    • Integrated I²C pull-up resistors
    • Dew point calculation
    • Excellent repeatability

    Dati Tecnici

    Measuring range
    0...100 % RH
    -40...135 °C (-40...275 °F)
    up to ±1.8 % RH (incl. hysteresis)
    up to ± 0.2 °C (0.36 °F)
    Digital interface
    2.35 - 3.6 V

    Downloads HTE501

    Software di applicazione
    Electronic Design Data

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