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    Sensirion AG Switzerland
    • Home
    • Environmental Sensors
      • Humidity Sensors
        • Digital Humidity Sensor SHT4x (RH/T)
        • Digital Humidity Sensor SHT3x (RH/T)
        • Digital Humidity Sensor SHT85 (RH/T)
        • Digital Humidity Sensor SHTC3 (RH/T)
        • Digital Humidity Sensor SHTC1 (RH/T)
        • Digital Humidity and Temperature Module SCC30-DB (RH/T)
        • SF2 Filter Cap
        • SHT31 Smart Gadget Development Kit
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      • Temperature Sensors
        • Temperature Sensor STS3x
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        • Multi-Gas, Humidity and Temperature Module SVM30 (NRND)
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      • Formaldehyde Sensor SFA30

        Formaldehyde Sensing Made Easy

        The SFA30 is Sensirion’s new digital formaldehyde sensor designed for easy integration into air purifiers, demand-controlled ventilation systems, or indoor air quality monitors. Based on Sensirion’s electrochemical technology, the SFA30 offers excellent formaldehyde sensing performance with a uniquely low cross-sensitivity to other VOCs. The sensor module’s on-board SHT sensor provides accurate humidity and temperature readings and enables a fully temperature/humidity compensated and factory calibrated formaldehyde concentration output in ppb.

        More

    • Flow Sensors
      • Liquid Flow Meters
        • Lx – Compact Liquid Flow Meters
          • Liquid Flow Meter LG16
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          • Liquid Flow Meter LS32-1500
        • SLx – Standalone Liquid Flow Meters
          • Liquid Flow Meter SLI
          • Liquid Flow Meter SLG
          • Liquid Flow Meter SLQ-QT105
          • Liquid Flow Meter SLQ-QT500
          • Liquid Flow Meter SLS-1500
        • Liquid Flow Sensor SLF3x
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      • Evaluation Kit SEK-Flow Sensing
      • Product Highlight

        Evaluation kit for the single-use liquid flow sensor LD20-2600B

        The LD20-2600B single-use liquid flow sensor for fast, precise and reliable measurements of the lowest flow rates in biomedical applications was successfully launched three years ago. The evaluation kit for this OEM liquid flow sensor can now also be purchased online via Sensirion's distribution network.

        Read more

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      • Our Markets

        Sensirion Markets Icons

        Experts for Smart Sensor Solutions

        Sensirion's sensors are used in a wide range of markets and different applications. Our high-quality environmental and flow sensors and sensor solutions improve energy efficiency and sustainability. They increase our safety, support our health and raise the quality of life. 

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        Sensirion Worldwide

        Founded in 1998 Sensirion has become the leading manufacturer of flow and environmental sensors solutions. The company now employs people in various countries such as the USA, South Korea, Japan, China, Taiwan, and Germany. The headquarters in Switzerland is responsible for research, development, and production. 

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      • Most Popular Employer in Switzerland 2019

        Learn more: www.sensirion.com/GPTW

         

        Top Career Openings:

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        • Senior Software Engineer 80-100%
        • Office Manager HR and Administration


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    • Home
    • Environmental Sensors
    • Humidity Sensors
    • Digital Humidity Sensor SHT4x (RH/T)

    Digital Humidity Sensor SHT4x (RH/T)

    The 4th Generation of Best-in-Class Humidity Sensing

    In line with Sensirion’s industry-proven humidity and temperature sensors, the SHT40 offers the best price-performance ratio on the market. Tape and reel packaging combined with its suitability for standard SMD assembly processes make the SHT4x ideal for high-volume applications.

    The SHT40 builds on a completely new and optimized CMOSens® chip that offers reduced power consumption and improved accuracy specifications. With the extended supply voltage range from 1.08 V to 3.6 V, it’s the perfect fit for mobile and battery-driven applications. The exceptionally small size in a robust DFN housing enables integration into challenging designs while meeting the highest reliability demands, as demonstrated by the JEDEC JESD47 qualification.

    In 2021, the high-accuracy versions SHT41 and SHT45 will be available. They feature typical and maximal accuracies that have been honed even further, down to ∆RH = ± 1.5% RH and ∆T = ± 0.1°C, making them suitable for the most demanding applications in all industries. The year 2021 will also bring additional protection options to complete the portfolio, meeting even the most rigorous technological challenges. The on-package filter membrane ensures IP67 compliance for exposed designs, while the protection option ensures reliable conformal coating.


    ProductTyp. RH Accuracy (RH)Typ. Temperature Accuracy (°C)VDD Range (V)InterfaceProtective OptionsAvailable Reel Sizes (pcs)

    Datasheet

    Buy
    SHT40±1.8 % RH±0.2°C1.08 V to 3.6 VI2CComing in 20212'500, 10'000Download
    • Table Overview Humidity Sensor SHT4x

    Features

    Size1.5 x 1.5 x 0.5 mm3
    OutputI²C
    Supply voltage range1.08 to 3.6 V
    Energy consumption0.4µA (at meas. rate 1 Hz)
    RH operating range0 - 100% RH
    T operating range-40 to +125°C (-40 to +257°F)
    RH response time6 sec (tau63%)

    Delivery Conditions

    PackagingTape & Reel, sealed in ESD bag
    Packaging sizes

    2'500 & 10'000 pieces per reel

     


    Download Image

    Download Center

    Here you can find all documents of Sensirion's humidity sensors for download.


    Accuracy Limits for Relative Humidity and Temperature


    Technology and Benefits

    TechnologyBenefit
    Supply voltage: 1.08 V to 3.6 VPerfectly suited for mobile and battery-driven applications, today and in the future
    Relative humidity accuracy: 1.8% RH
    Temperature accuracy: ±0.2°C
    Unrivalled accuracy tolerances, minimal device-to-device (D2D) variations
    I2C fast mode plusFastest data transfer, minimum bus occupancy
    Variable power heaterEnabling new applications in extreme operating conditions
    New MEMS sensor elementFully functional in a condensing environment, full signal integrity at all times
    Average current: 0.4 µA (at meas. rate 1 Hz)Enhancing battery lifetime and ideal for power-conscious devices

    Petition "40to60RH"

    Several research papers demonstrate that controlled indoor humidity levels play a crucial role in preventing virus transmission and improving the resilience of the human immune system. The data shows that a relative humidity (RH) level of between 40% and 60% is optimal for minimizing the spread of viruses such as influenza. Scientists are therefore calling on the WHO to revise the global guidelines for indoor air quality.


    The significance of indoor humidity is crucial to us. As market leader in humidity sensing, it is important to us to support petition 40to60RH. Improving people’s health is part of our mission and we therefore encourage everyone to support this petition to gain the attention of the World Health Organization.

    Support the petition and learn more about it: www.40to60rh.com


    Related Products

    Sensirion Humidity Sensors SHT3x

    Digital Humidity Sensor SHT3x (RH/T)

    The SHT3x humidity sensor is the established industry standard thanks to its performance, range of variants, and features.

    Digital Humidity Sensor SHT85 (RH/T)

    A highly accurate, digital pin-type relative humidity sensor for easy replaceability in a wide range of applications.

    Technical Documents

    • Datasheet SHT4x

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