Honeywell HumidIcon™ Digital
Humidity/Temperature Sensors

Datasheet
2
sensing.honeywell.com
HIH7120 HIH7121


Series* 




    
HIH7120-021-xxxx
digital 2.3 Vdc to
5.5 Vdc
SIP 4-pin without filter,
non-condensing

I2C100 to 249 units on tape
and boxed, 250 units or
more on tape and reel; or
5 sample pieces on tape
HIH7121-021-xxxx SIP 4-pin with filter,
condensation resistant I2C
HIH7130-021-xxxx SOIC-8 SMD without filter,
non-condensing I2C1000 pieces on tape and
reel; or 5 sample pieces
on tape
HIH7130-000-xxxx SOIC-8 SMD without filter,
non-condensing SPI
HIH7131-021-xxxx SOIC-8 SMD with filter,
condensation resistant I2C
1000 pieces on tape and
reel; or 5 sample pieces
on tape
HIH7131-000-xxxx SOIC-8 SMD with filter,
condensation resistant SPI
1000 pieces on tape and
reel; or 5 sample pieces
on tape
* See order guide on page 11 for complete catalog listings.

INDUSTRY-LEADING RELIAbILITY • ACCURACY • pACkAGING • LoNG-TERm STAbILITY
Honeywell HumidIcon™
Digital Humidity/Temperature Sensors
Honeywell HumidIcon™ Digital Humidity/Temperature Sensors, HIH9000 Series, are digital output-type relative humidity (RH)
and temperature sensors combined in the same package. These sensors provide an accuracy level of .
• Industry-leadinglong-termstability • Truetemperature-compensateddigitalI2C or SPI output
• Industry-leadingreliability • Energyefficiency
• Lowesttotalcostsolution • Ultra-smallpackagesizeandoptions
• Otheraccuraciesavailable:±1.7%RH(HIH9000Series),±2.0%RH(HIH8000Series),±4.0%RH(HIH6100Series),
and±4.5%RH(HIH6000Series)
What makes our sensors better?
• One sensor does the work of two!
• ±3.0%RHAccuracy(humidityperformance)
• ±1.0°CAccuracy(BFSL)(temperatureperformance)
• -40°Cto100°C[-40°Fto212°F]OperatingTemp.Range
The series consists of packaging variations, offering customers the ability to
choose housing style (SIP 4-Pin or SOIC-8 SMD), filter (hydrophobic filter or
no filter), output (I2C or SPI), and packaging (tape and boxed, tape and reel, or
samples on tape).
sensing.honeywell.com
*Competitive Differentiator
±3.0
ACCURACY
%RH
Features
and Benefits


Competitivehumiditysensorsrequirea12hourat75%RHrehydrationprocess
(which requires special equipment chambers) to correct reflow temperature
offset. Honeywell’s sensor also experiences an offset after reflow; however, it only
requiresafive-hourrehydrationunderambientconditions(>50%RH).
Honeywell’sindustry-leadinglong-termstability:
• Minimizessystemperformanceissues
• Helps by eliminating the need
to service or replace the sensor during its application life
•  the
sensor in the application, which can be inconvenient
and costly


Thermoset-polymer capacitive sensing element’s multilayer
construction provides  such as
condensation, dust, dirt, oils, and common environmental chemicals, which help
provide industry-leading reliability

Honeywell’s HumidIcon HIH7000 Series delivers the lowest total cost solution due
to the sensor’s 

AllowstheRHmeasurementtobetemperaturecompensated,andprovidesa
second, standalone temperature sensor output; allows the user to 


• Low supply voltage: Can operate down to 2.3 Vdc, which allows use in 
 to enhance energy savings
and prolong system battery life
• Low power consumption: The sensor goes into  when not
takingameasurementwithintheapplication,consumingonly1µAofpower
versus750µAinfulloperationinabatteryoperatedsystem;sleepmodehelps
maximizebatterylife,reducespowersupplysize,andreducestheapplication’s
overall weight
Offers customers the lowest total cost solution.
One sensor does the work of two!
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
High 14-bit humidity sensor resolution and 14-bit temperature sensor resolution
within the application help the user’s system 


2
Typically allows the customer to remove the components associated with signal
conditioningfromthePCBto and  associated with
those components (e.g., acquisition, inventory, assembly). True, temperature-
compensated digital I2C or SPI output often eliminates problems that could occur
fromhavingmultiplesignalconditioningcomponentsacrossthePCB,aswellas
simplifies integration to the microprocessor, eliminating the need for customer-
implemented, complex signal conditioning

SOIC-8SMD(SurfaceMountDevice)orSIP4Pin;ultra-smallsizeallowsfor
flexibility of use within the application, onthePCB,and
typically oncrowdedPCBsorinsmalldevices;industry
standard design simplifies design-in

Availablewithhydrophobicfilterandcondensation-resistance,allowingfor
, or without hydrophobic filter, non-condensing

Allowsforuseinhighvolume,automatedpick-and-placemanufacturing,
tothePCBandhelpingthecustomerto


-40°Cto100°C[-40°Fto212°F]allowsforuseinmanyapplications

Provides the ability to monitor whether the RH level has exceeded or fallen below
predetermined and critical levels within the application

Delivers flexibility within the application by lowering or eliminating the risk and cost
ofOEMcalibration

Free up PCB space. Reduce costs.
Choose options to best fit the application.
Features
and Benefits
sensing.honeywell.com


May be used to provide precise RH and temperature measurement in air
conditioning/air movement systems, enthalpy sensing, thermostats, humidifiers/
dehumidifiers, and humidistats to maintain occupant comfort and ideal storage
humidity/temperature while achieving low energy consumption, supporting system
accuracyandwarrantyrequirements,maximizingsystemuptime,andimproving
overall system quality.

May be used to provide precise RH measurement in compressed air lines, allowing
the system to remove any condensation; dry compressed air is critical for customer
process control measurement.

May be used to provide precise RH and temperature measurement in ground-based
and airborne weather stations, allowing real time and highly accurate monitoring/
reporting of actual weather conditions.

May be used to provide precise RH and temperature measurement in the telecom
cabinetHVACsystem;maintainingpropertemperatureandhumiditylevelsinthe
cabinet provides maximum system uptime and performance.

May be used to provide optimal temperature and RH levels to support critical
processes and experiments, enhancing process efficiency with desired climate
conditions.


May be used to provide precise RH and temperature measurement in sleep
apnea machines and ventilators, enhancing patient comfort, safety and treatment
effectiveness with warm and humidified air.

May be used to provide optimal temperature and RH levels to support critical
processes and experiments, enhancing process efficiency with desired climate
conditions.
Potential Applications
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HIH7000 Series • 

     
Operating temperature range powered -40[-40] –100[212] °C[°F]
Operating humidity range powered 0 – 100 %RH
Storage temperature range unpowered -40[-40] –125[257] °C[°F]
Storage humidity range –30 –50 %RH
Solderingtemperature:
manual
automated
4 s reflow peak
30 s reflow peak
–
–
–
–
350[662]
260[500]
°C[°F]
ESD MIL-STD883H,Method3015.7 – – ±4 kV
Latch-upimmunity – – – ±100 m
Shock
MIL-STD202G,Method213D,TestConditionC,
half-sine,6ms±3perpendicularaxis,3shockpulses
per axis
– – 100 g
Vibration MIL-STD202G,Method204D,TestConditionD,
10Hzto2000Hz – – 20 g
Lightsensitivity exposed to 50 lumens yellow light; exhibited no change in output
Reliability(MTTF) 9,312,507 hr

     
Supply voltage range VDD 2.3 3.3 5.5 Vdc
Compensated humidity range15°Cto50°C[41°Fto122°F] 20 – 80 %RH
Compensated temp. range1–5[41] –50[122] °C[°F]
Resolution 14bitADCresolution – – 0.04 %RH
Accuracy225°C[77°F]risingRH –±3.0 –%RH
Response time airflow minimum 20 l/min – 68 s
Operating range non-condensing 0 – 100 %RH
Longtermstability 50%RHfor5years –±0.05 ±1.2 %RH
Impact of soldering IPC/EIA/JEDECJ-STD-020D,peaktemp.
of260°C[500°F] – – ±2.5 %RH

1ConversionFormulas:
14bitADCoutputforhumidityto%RH: 14bitADCoutputfortemperatureconversionto°C:
Humidity(%RH) =Humidity_14_bit_ADC_output x 100
214 – 2 Temperature(C°) = Temperature_14_bit_ADC_outputx165–40
214 – 2
2 Accuracyisspecifiedatthetypicalsupplyvoltageof3.3Vdcandat25°C[77°F].Itisthemaximumdeviationfromtheidealtransferfunctionof
relativehumiditymeasuredoverthecompensatedhumidityrangeof20%RHto80%RH.
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Honeywell HumidIcon™ Digital Humidity/Temperature Sensors

     
Supply voltage variation 2.3 Vdc to 5.5 Vdc –0.5 1.0 °C
Compensated temp. range – 5[41] –50[122] °C[°F]
Resolution 14bitADCresolution – – 0.025 °C
Accuracy(BFSL)15°Cto50°C[41°Fto122°F] –±1.0 –°C
Response time 1/e slow moving air 5 – 30 s
Longtermstability 25°Cfor5years – – ±0.05 °C/yr
Impact of soldering IPC/EIA/JEDECJ-STD-020D,peaktemp.
of260°C[500°F] – – ±0.1 °C

1 Accuracyisspecifiedoverthecompensatedtemperaturerange.

 DD     
Sleep current 3.3 ISLEEP –0.6 1µA
Supplycurrent:
I2C
SPI
3.3
3.3
IDD
IDD
14 bit fastest update, no sleep
14 bit fastest update, no sleep
0.65
0.75
1
1
mA
mA

      
Supply voltage VDD – 2.3 3.3 5.5 Vdc
Lowleveloutputvoltage VOL IOL=2.8mAmin. – – 20% VDD
High level output voltage VOH IOH=-2.8mAmin. 80% – – VDD
Lowlevelinputvoltage VIL – – – 20% VDD
High level input voltage VIH –80% – – VDD
Pull-upresistor:
I2C
SPI (for SS only)
RP
RSS
–
–
–
–
2.2
10
–
–
kOhm
kOhm

      
Start-up time (power-on to
data ready) TSTA 14 bit TH and 14 bit humidity resolution – 50 60 ms
Updaterate applicationdependent:measurementsaretakenonlywhentheapplicationrequeststhem
8
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2
SDA
SCL
t
LOW
t
HDSTA
t
HDSTA
t
HIGH
t
HDDAT
t
SUSTA
t
SUSTO
t
BUS
t
SUDAT
     
SCLclockfrequency FSCL 100 –400 kHz
StartconditionholdtimerelativetoSCLedge tHDSTA 0.1 – – µs
MinimumSCLclocklowwidth1 tLOW 0.6 – – µs
MinimumSCLclockhighwidth1 tHIGH 0.6 – – µs
StartconditionsetuptimerelativetoSCLedge tSUSTA 0.1 – – µs
DataholdtimeonSDArelativetoSCLedge tHDDAT 0 – 0.5 µs
DatasetuptimeonSDArelativetoSCLedge tSUDAT 0.1 – – µs
StopconditionsetuptimeonSCL tSUSTO 0.1 – – µs
Busfreetimebetweenstopandstartcondition tBUS 1 – – µs

1 CombinedlowandhighwidthsmustequalorexceedminimumSCLperiod.

t
BUS
t
CLKD
SCLK
MISO
SS
t
HIGH
t
SUSS
HiZHiZ
t
HDSS
t
LOW
t
CLKD
     
SCLKclockfrequency fSCL 50 –800 kHz
SS drop to first clock edge tHDSS 2.5 – – μs
MinimumSCLKclocklowwidth1tLOW 0.6 – – μs
MinimumSCLKclockhighwidth1tHIGH 0.6 – – μs
Clock edge to data transition tCLKD 0 – 0.5 μs
Rise of SS relative to last clock edge tSUSS 0.1 – – μs
BusfreetimebetweenriseandfallofSS tBUS 2 – – µs

1 CombinedlowandhighwidthsmustequalorexceedminimumSCLKperiod.
HIH7000 Series • 
sensing.honeywell.com
Honeywell HumidIcon™ Digital Humidity/Temperature Sensors Honeywell HumidIcon™ Digital Humidity/Temperature Sensors

I2SPI
Digital Humidity/Temp.
Sensor
V
DD
V
CORE
V
SS
NC
SCL
SDA
AL_L
AL_H
V
SUPPLY
= 2.3 Vdc to 5.5 Vdc
GND
GND
12 V
0.1 µF
0.22 µF
2.2
kOhm
83
4
5
6
1
2
7
LED
2.2
kOhm
Digital Humidity/Temp.
Sensor
V
DD
V
CORE
V
SS
NC
SS
SCLK
MISO
AL_L
GND
0.1 µF
0.22 µF
10
kOhm
83
4
6
5
1
2
7
LED
V
SUPPLY
= 2.3 Vdc to 5.5 Vdc

 
4,90
[0.193]
3,90
[0.153]
1,905
[0.075]
1,27
[0.050]
0.41
[0.016]
1234
8765
6,0
[0.236]
0,15
[0.006]
0,203
[0.0080]
2,055
[0.081]
8X 0,61
[0.024]
8X 2,03
[0.08]
4X 4,9
[0.193]
6X 1,27
[0.05]
2 
     
1 VCORE connectvia0.1µFtoground 1 VCORE connectvia0.1µFtoground
2 VSS supply ground 2 VSS supply ground
3SCL I2C clock 3 SS slave select (Input)
4SDA I2C data 4 SCLK serial clock
51AL_H alarm output high 5 MISO master-in-slave-out
61AL_L alarm output low 61AL_L alarm output low
7 NC not connected externally 7 NC not connected externally
8 VDD supplyvoltage,connectvia0.22µFtoground 8 VDD supplyvoltage,connectvia0.22µFtoground
1 DonotconnectPin(s)5and/or6ifthebuilt-inalarmfeatureisnotdesired. 1 DonotconnectPin6ifthebuilt-inalarmfeatureisnotdesired.

4,00
[0.157]
1,50
[0.059]
1,75
[0.069] 0,32
[0.013]
13
[0.51]
330
[13,0]
21,4
[0.84]
102
[4.0]
8,00
[0.315]
16,00
[0.630]
5,00
[0.197]
2,61
[0.103]
10
sensing.honeywell.com
HIH7000 Series • 

Digital Humidity/Temp.
Sensor
V
DD
V
SS
SCL
SDA
V
SUPPLY
= 2.3 Vdc to 5.5 Vdc
GND
0.22 µF
2.2
kOhm
13
42
2.2
kOhm

 
1234
8,9
[0.35]
1,20
[0.047]
PCB
1,2 - 2,0
[0.05 - 0.08]
4,90
[0.193]
3,90
[0.153]
5,0
[0.197]
1,27
[0.050]
0.41
[0.016]
0,063
[0.0025]
0,203
[0.0080]
1,905
[0.075]
1,27
[0.050]
1,05 DIA.
[0.040] 0,65 DIA.
[0.025]
1
4,00
[0.157]
1,50
[0.059]
1,75
[0.069] 0,32
[0.013]
13
[0.51]
330
[13,0]
21,4
[0.84]
102
[4.0]
8,00
[0.315]
16,00
[0.630]
5,00
[0.197]
2,61
[0.103]
1 Forordersof250to1000units
  
1 VDD connectvia0.22µFtoground
2 VSS supply ground
3SCL I2C clock
4SDA I2C data
11
sensing.honeywell.com
Honeywell HumidIcon™ Digital Humidity/Temperature Sensors

 
HIH7120-021-0011HoneywellHumidIcon™DigitalHumidity/TemperatureSensors:HIH7000Series,I2C,±3.0%RHaccuracy,SIP
4 Pin, without filter, non-condensing, 100 units on tape
HIH7120-021-001S HoneywellHumidIcon™DigitalHumidity/TemperatureSensors:HIH7000Series,I2C,±3.0%RHaccuracy,SIP
4 Pin, without filter, non-condensing, five units on tape (sample)
HIH7121-021-0011HoneywellHumidIcon™DigitalHumidity/TemperatureSensors:HIH7000Series,I2C,±3.0%RHaccuracy,SIP
4 Pin, with filter, condensation-resistant, 100 units on tape
HIH7121-021-001S HoneywellHumidIcon™DigitalHumidity/TemperatureSensors:HIH7000Series,I2C,±3.0%RHaccuracy,SIP
4 Pin, with filter, condensation-resistant, five units on tape (sample)
HIH7130-000-001 HoneywellHumidIcon™DigitalHumidity/TemperatureSensors:HIH7000Series,SPI,±3.0%RHaccuracy,
SOIC-8 SMD, without filter, non-condensing, 1000 units on tape and reel
HIH7130-000-001S HoneywellHumidIcon™DigitalHumidity/TemperatureSensors:HIH7000Series,SPI,±3.0%RHaccuracy
SOIC-8 SMD, without filter, non-condensing, five units on tape (sample)
HIH7130-021-001 HoneywellHumidIcon™DigitalHumidity/TemperatureSensors:HIH7000Series,I2C,±3.0%RHaccuracy,
SOIC-8 SMD, without filter, non-condensing, 1000 units on tape and reel
HIH7130-021-001S HoneywellHumidIcon™DigitalHumidity/TemperatureSensors:HIH7000Series,I2C,±3.0%RHaccuracy,
SOIC-8 SMD, without filter, non-condensing, five units on tape (sample)
HIH7131-000-001 HoneywellHumidIcon™DigitalHumidity/TemperatureSensors:HIH7000Series,SPI,±3.0%RHaccuracy,
SOIC-8 SMD, with filter, condensation-resistant, 1000 units on tape and reel
HIH7131-000-001S HoneywellHumidIcon™DigitalHumidity/TemperatureSensors:HIH7000Series,SPI,±3.0%RHaccuracy,
SOIC-8 SMD, with filter, condensation-resistant, five units on tape (sample)
HIH7131-021-001 HoneywellHumidIcon™DigitalHumidity/TemperatureSensors:HIH7000Series,I2C,±3.0%RHaccuracy,
SOIC-8 SMD, with filter, condensation-resistant, 1000 units on tape and reel
HIH7131-021-001S HoneywellHumidIcon™DigitalHumidity/TemperatureSensors:HIH7000Series,I2C,±3.0%RHaccuracy,
SOIC-8 SMD, with filter, condensation-resistant, five units on tape (sample)
1 Orders of 250 units or more are packaged on tape and reel.
12
sensing.honeywell.com
SENSOR REHYDRATION


• Exposuretoelevatedtemperatures,suchasthose
experienced during solder reflow, may dry out the sensing
element. It is recommended that the sensor be allowed time
to rehydrate after soldering or other high temperature/dry
exposures.
• Exposuretotheseconditionswillnotpermanentlydamagethe
sensor. It will generally return to its factory-calibrated value after
rehydration.
• Ifrehydrationisnotperformed,thesensormayreadaslight
offset that slowly disappears over time as the sensor becomes
exposed to ambient conditions. Conversely, extended
exposure to condensing and high humidity environments
(>90%RH)maycausearevisableshiftinreadingswhichwill
generally return to normal after the sensor has been allowed to
dry off.
To rehydrate the sensor, expose it to room temperature under
ambientconditions(>50%RH)foraminimumoffivehours.

ThefollowingassociatedliteratureisavailableontheWeb:
• Productinstallationinstructions
• Productapplicationnote
• Applicationsheets:
– Humidity Sensor Performance Characteristics
–HumiditySensorTheoryandBehavior
– Humidity Sensor Moisture and Psychrometrics
– Humidity Sensor Chemical Resistivity
–ThermosetPolymer-BasedCapacitiveSensors
• TechnicalNotes:
– I2C Communication with the Honeywell HumidIcon™ Digital
Humidity/Temperature Sensors
– SPI Communication with the Honeywell HumidIcon™ Digital
Humidity/Temperature Sensors
– UsingAlarmsontheHoneywellHumidIcon™Digital
Humidity/Temperature Sensors
– EnteringandUsingCommandModeontheHoneywell
HumidIcon™ Digital Humidity/Temperature Sensors
HIH7000 Series • 

Honeywell warrants goods of its manufacture as being free of
defective materials and faulty workmanship. Honeywell’s standard
product warranty applies unless agreed to otherwise by Honeywell
in writing; please refer to your order acknowledgement or consult
your local sales office for specific warranty details. If warranted
goods are returned to Honeywell during the period of coverage,
Honeywell will repair or replace, at its option, without charge those
items it finds defective. 

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Whileweprovideapplicationassistancepersonally,throughour
literature and the Honeywell website, it is up to the customer to
determine the suitability of the product in the application.
Specifications may change without notice. The information we
supply is believed to be accurate and reliable as of this printing.
However, we assume no responsibility for its use.
WARNING
PERSONAL INJURY
DO NOT USE these products as safety or emergency stop
devices or in any other application where failure of the
product could result in personal injury.
Failure to comply with these instructions could result in
death or serious injury.
WARNING
MISUSE OF DOCUMENTATION
• Theinformationpresentedinthisproductsheetisfor
reference only. Do not use this document as a product
installation guide.
• Completeinstallation,operation,andmaintenance
information is provided in the instructions supplied with
each product.
Failure to comply with these instructions could result in
death or serious injury.
Mouser Electronics
Authorized Distributor
Click to View Pricing, Inventory, Delivery & Lifecycle Information:
Honeywell:
HIH7131-021-001S HIH7130-021-001 HIH7120-021-001 HIH7131-021-001 HIH7130-000-001S HIH7121-021-001S
HIH7120-021-001S HIH7121-021-001 HIH7130-000-001 HIH7130-021-001S HIH7131-000-001S HIH7131-000-001