MEMS Temperature and Humidity Sensor WHT20


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  • WHT20.png

Summary:

WHT20 series temperature and humidity sensor, using transistor Vbe temperature characteristic high-precision temperature detection and dielectric constant change after the medium absorbs moisture. Realize environmental humidity detection, combined with the latest integrated circuit signal processing technology-based single-chip solutions.

Feature:

* High accuracy, ±3.0% RH and ±0.5 ℃
* Wide supply voltage range from 2.0 V to 5.5 V
* Available in SMD package, suitable for reflow soldering
* Quick response and strong anti-interference

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APPLICATION

Vehicle Air Quality

Vehicle exhaust contains hundreds of different compounds, including suspended solids, carbon monoxide, carbon dioxide, hydrocarbons, nitrogen oxides, lead and sulfur oxides. Among them, hydrocarbons (HC) in automobile exhaust are the result of direct emission of unburned or insufficiently burned gasoline in the form of gas. Under the action of ultraviolet light,

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PARAMETER

Specification Product Size

Technical Data Sheet

 

Humidity characteristics
Parameter Condition Minimum Typical Maximum Unit
Resolution typical   0.01   %RH
Precision error typical   ±3.0   %RH
maximum Refer to Figure 1   %RH
Repeatability     ±0.1   %RH
Hysteresis     ±0.1   %RH
Nonlinear     <0.1   %RH
Response time t63%   <8   s
Work scope extended3 0   100 %RH
Long time drift normal   <0.5   %RH/yr
Temperature characteristics
Parameter Condition Minimum Typical Maximum Unit
Resolution typical   0.01  
Precision error typical   ±0.5  
maximum Refer to Figure 2  
Repeatability     ±0.1  
Hysteresis     ±0.1  
Response time t63% 5   30 s
Work scope extended3 -40   85
Long time drift     <0.04   ℃/yr
Electrical Characteristics
Parameter Condition Minimum Typical Maximum Unit
Supply voltage typical 2.0 3.3 5.5 V
Supply current, IDD6 hibernate -   240 nA
measurement   340   µA
Power consumption hibernate -   0.8 µW
measurement   0.07   mW
average - 3.3 - µW
Communication Two-wire digital interface, standard I2C protocol
Note Power consumption is related to temperature and supply voltage VDD. Refer to the manual for details.
Packaging Information
Sensor model Package Quantity
WHT 20 Tape and Reel 5000PCS/roll(MAX)

Figure 1 Maximum error in relative humidity at 25°C

               Typical (——) Maximum (- - - -)

Figure 2 Temperature Typical Error and Maximum Error

               Typical (——) Maximum (- - - -)

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Free Guide! Learn the Parameter Differences of Similar Sensors

Wondering how to find the most suitable one for you out of so many sensors? Download our free guide to learn the comparison table of technical parameters. 

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RELATED PRODUCTS

As a pioneer in gas sensor based solutions with the advanced processes, technologies and products, Winsen offers a wide range of gas sensors:

RELATED PRODUCTS

As a pioneer in gas sensor based solutions with the advanced processes, technologies and products, Winsen offers a wide range of gas sensors:

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We have 17 sensor series, 200+ categories, and 300+ detection objects for gas detection. Such as CO, CO2, VOC, PM2.5, CH4, LPG and so on. In particular, we also have MEMS sensors. According to your industry application, gas principle, power consumption, accuracy, and range requirements, and we can select a specific model for you. You can also use the product filter below to choose a suitable product, or choose online serivce.

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Winsen is a factory with over 30,000 square meters area and 500+ production machines which is focusing on sensors development&manufacturing. It has strong R&D strength with more than 100 R&D personnel.

How long is the delivery time?

1-7 days after received payment

What is your warranty term?

The warranty period is one year from the date of shipment. If the appearance of the product is not damaged, it can be returned after confirmation. For damage not caused by Winsen, the customer shall bear all maintenance costs.

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