SHT21
Sensirion AGSwitzerland

SHT21

Not For New DesignsHumidity, Moisture SensorsDFN 3 x 3 mm

SENSOR HUMID/TEMP 3V I2C 2% SMD

SHT21 is a humidity and temperature sensor in DFN 3x3mm package with I2C digital interface, operating voltage 2.1-3.6V, compliant with RoHS and AEC-Q100 Grade 1.Checked against the datasheet

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Technical parameters

Datasheet-verified parameters

20 items
ParameterValue and test conditionsSource
PackageDFN 3 x 3 mm, 1.1 mm height
Operating Temperature-40°C to 125°C
GradeAEC-Q100 temperature grade 1
RoHSCompliant
Supply Voltage, VDDmin 2.1 V, typ 3.0 V, max 3.6 V
Absolute Maximum Rating VDD to VSSmin -0.3 V, max 5 V
Supply Current, IDD (sleep mode)typ 0.15 μA, max 0.4 μA
Supply Current, IDD (measuring)min 200 μA, typ 300 μA, max 330 μA
Power Dissipation (sleep mode)typ 0.5 μW, max 1.2 μW
Power Dissipation (measuring)min 0.6 mW, typ 0.9 mW, max 1.0 mW
Communicationdigital 2-wire interface, I2C protocol
Default measurement resolution14 bit (temperature) / 12 bit (humidity)
Normal operating range (RH)0-80 %RH
ESD immunityHBM ±4 kV, MM ±200 V, CDM 750V/500V
Latchup immunityforce current of ±100 mA with Tamb = 125°C
Output Low Voltage, VOLmax 0.4 V (VDD = 3.0 V, -4 mA < IOL < 0mA)
Input Low Voltage, VILmax 30% VDD
Input High Voltage, VIHmin 70% VDD, max VDD
Input Currentmax ±1 uA (VDD = 3.6 V, VIN = 0 V to 3.6 V)
Material ComplianceRoHS and WEEE compliant, free of Pb, Cd and Hg
All parameters (16)ExpandCollapse
Power
Voltage - Supply2.1V ~ 3.6V
AC and DC characteristics
Accuracy±2% RH
Environment and package
Mounting TypeSurface Mount
Operating Temperature-40°C ~ 125°C
PackageTape & Reel (TR) Cut Tape (CT) Digi-Reel®
Package / Case6-TDFN Exposed Pad
Supplier Device Package6-DFN (3x3)
Other
Humidity Range0 ~ 100% RH
MfrSensirion AG
Output12b
Output TypeI2C
Product StatusNot For New Designs
Response Time8 s
Sensitivity-
Sensor TypeHumidity, Temperature
Series-

Pinout and package

PackageDFN 3 x 3 mm, 1.1 mm height

PinNameFunctionSource
1SDA, Serial Data, bidirectional
2VSS, Ground
3NC, Not Connected
4NC, Not Connected
5VDD, Supply Voltage
6SCL, Serial Clock, bidirectional

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