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MEMS Temperature and Humidity Sensor WHT20

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

INQUIRY

MANUAL

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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
Precision error	maximum	Refer to Figure 1			%RH
Repeatability			±0.1		%RH
Hysteresis			±0.1		%RH
Nonlinear			<0.1		%RH
Response time	t_63%		＜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		℃
Precision error	maximum	Refer to Figure 2			℃
Repeatability			±0.1		℃
Hysteresis			±0.1		℃
Response time	t_63%	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
Supply current, IDD⁶	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 (- - - -)

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

MEMS Temperature and Humidity Sensor Module ZS11

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