HIH-4010/4020/4021
SeriesHumidity Sensors
DESCRIPTION

The HIH-4010 is an uncovered integrated humidity sensor, theThe HIH-40104020/4021 Series Humidity Sensors areHIH-4020 is a covered integrated circuit humidity sensor, anddesigned specifically for high volume OEM (Original Equipment

the HIH-4021 is a covered, condensation-resistant, integratedManufacturer) users.

circuit humidity sensor. All three products are available in twolead space configurations.

Direct input to a controller or other device is made possible bythis sensor’s near linear voltage output. With a typical current

The RH sensor is a laser trimmed, thermoset polymer

draw of only 200 µA, the HIH-4010/4020/4021 Series is often

capacitive sensing element with on-chip integrated signal

ideally suited for low drain, battery operated systems.

conditioning.

Tight sensor interchangeability reduces or eliminates OEM

The sensing element's multilayer construction provides

production calibration costs. Individual sensor calibration data

excellent resistance to most application hazards such as

is available.

wetting, dust, dirt, oils and common environmental chemicals.
Both products are available in two lead spacing configurations,The HIH-4010/4020/4021 Series delivers instrumentation-

as well as with or without calibration and data printouts.

quality RH (Relative Humidity) sensing performance in acompetitively priced, solderable SIP (Single In-line Package).
FEATURESPOTENTIAL APPLICATIONS•

Molded thermoset plastic housing•

Refrigeration equipment•

Near linear voltage output vs %RH•

HVAC (Heating, Ventilation and Air Conditioning)•Laser trimmed interchangeability•

Low power design•

Medical equipment•

Enhanced accuracy•

Drying•Fast response time•

Metrology•

Stable, low drift performance•

Battery-powered systems•

Chemically resistant•OEM assemblies

equipment

HIH-4010/4020/4021 Series
TABLE 1. PERFORMANCE SPECIFICATIONS (At 5 Vdc supply and 25 ºC [77 ºF] unless otherwise noted.)Parameter

Minimum

TypicalMaximum

Unit

Specific
Note–––1––––
2
34–

Interchangeability (first order curve)––––
0% RH to 59% RH-55% RH–60% RH to 100% RH-88% RH–Accuracy (best fit straight line)% RH-3.5–+3.5Hysterisis
3% RH
–
–
Repeatability±0.5% RH––
Settling time
70ms––
Response time (1/e in slow moving air)
5s––
Stability (at 50 %RH in 1 year)±1.2%RH––
Stability (at 50 %RH in 1 year)±0.5% RH––
Voltage supply
45.8
Vdc
–
Current supply
500µA
–
200st
Voltage output (1 order curve fit)
VOUT=(VSUPPLY)(0.0062(sensor RH) + 0.16), typical at 25 ºC
Temperature compensation
True RH = (Sensor RH)/(1.0546 – 0.00216T), T in ºC
Output voltage temp. coefficient at 50% RH, 5 V
mV/ºC
–-4–
–
Operating temperature-40[-40]
See Figure 1.
85[185]ºC[ºF]–
Operating humidity (HIH-4010)
0
See Figure 1.
100% RH
5
Operating humidity (HIH-4020)
0
See Figure 1.
100% RH
5
Operating humidity (HIH-4021)
0
See Figure 1.
100% RH–
Storage temperature-50[-58]
125[257]ºC[ºF]––
Storage humidity
See Figure 2.
% RH
5Specific Notes:
General Notes:
1. For HIH-4010/20/21-003/004 catalog listings only.
• Sensor is ratiometric to supply voltage.
2. Includes testing outside of recommended operating zone.
• Extended exposure to >90% RH causes a reversible
3. Includes testing for recommended operating zone only.
shift of 3% RH.
4. Device is calibrated at 5 Vdc and 25 ºC.
• Sensor is light sensitive. For best performance, shield
5. Non-condensing environment. When liquid water falls on thesensor from bright light.
humidity sensor die, output goes to a low rail conditionindicating no humidity.
FACTORY CALIBRATION DATA
HIH-4010/4020/4021 Sensors may be ordered with acalibration and data printout. See Table 2 and the order guideon the back page.
TABLE 2. EXAMPLE DATA PRINTOUT
Model
HIH-4010-003
Channel92
Wafer
030996M
MRP
337313Calculated values at 5 V
0.958 V
VOUT at 0% RH
3.268 V
VOUT at 75.3% RH
Linear output for 3.5% RH
accuracy at 25 °C
Zero offset
0.958 V
Slope
30.680 mV/%RHSensor RH(VOUT - zero offset)/slope(VOUT - 0.958)/0.0307
Ratiometric response for0% RH to 100% RH
VOUT
VSUPPLY (0.1915 to 0.8130)
2

www.honeywell.com/sensing

For HIH-4010-001/002/003/004 catalog listings only.

For HIH-4020-001/002/003/004 and HIH-4021-001/002/003/
004 catalog listings only.

Humidity Sensors
FIGURE 1. OPERATING ENVIRONMENT (Non-condensing environment for HIH-4010 and HIH-4020 catalog listings only.)

Relative Humidity

FIGURE 2. STORAGE ENVIRONMENT (Non-condensing environment for HIH-4010 and HIH-4020 catalog listings only.)

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HIH-4010/4020/4021 Series
FIGURE 3. TYPICAL OUTPUT VOLTAGE VS RELATIVE HUMIDITY (At 25 ºC and 5 V.)
43.5

Output Voltage (Vdc)

32.5Sensor Response
Sensor Response
Best Linear Fit

21.5

10.5
020406080

100

Relative Humidity (%RH)

FIGURE 4. TYPICAL OUTPUT VOLTAGE (BFSL) VS RELATIVE HUMIDITY (At 0 ºC, 70 ºC and 5 V.)
4.5
43.5

Output Voltage (Vdc)

32.50C70 C

21.5

10.5
00102030405060

Relative Humidity (%)

4

www.honeywell.com/sensing

708090100

Humidity Sensors
FIGURE 5. HIH-4010 MOUNTING DIMENSIONS (For reference only. mm/[in])FIGURE 6. HIH-4020 MOUNTING DIMENSIONS (For reference only. mm/[in])Honeywell Sensing and Control

5HIH-4010/4020/4021 Series
FIGURE 7. HIH-4021 MOUNTING DIMENSIONS (For reference only. mm/[in])6

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Humidity Sensors
FIGURE 8. TYPICAL APPLICATION CIRCUITORDER GUIDE
Catalog
Listing
HIH-4010-001
HIH-4010-002
HIH-4010-003
HIH-4010-004
HIH-4020-001
HIH-4020-002
HIH-4020-003
HIH-4020-004
HIH-4021-001
HIH-4021-002
HIH-4021-003
HIH-4021-004

Description
Integrated circuit humidity sensor, 2,45 mm [0.100 in] lead pitch SIP
Integrated circuit humidity sensor, 1.27 mm [0.050 in] lead pitch SIP
Integrated circuit humidity sensor, 2,45 mm [0.100 in] lead pitch SIP, calibration and data printout
Integrated circuit humidity sensor, 1.27 mm [0.050 in] lead pitch SIP, calibration and data printout
Covered integrated circuit humidity sensor, 2,45 mm [0.100 in] lead pitch SIP
Covered integrated circuit humidity sensor, 1.27 mm [0.050 in] lead pitch SIP
Covered integrated circuit humidity sensor, 2,45 mm [0.100 in] lead pitch SIP, calibration and data printout
Covered integrated circuit humidity sensor, 1.27 mm [0.050 in] lead pitch SIP, calibration and data printout
Covered, filtered integrated circuit humidity sensor, 2,45 mm [0.100 in]lead pitch SIP
Covered, filtered integrated circuit humidity sensor, 1.27 mm [0.050 in] lead pitch SIP
Covered, filtered integrated circuit humidity sensor, 2,45 mm [0.100 in] lead pitch SIP, calibration and data
printout
Covered, filtered integrated circuit humidity sensor, 1.27 mm [0.050 in] lead pitch SIP, calibration and dataprintout

FURTHER HUMIDITY SENSOR INFORMATION
See the following associated literature at www.honeywell.com/sensing:• Product installation instructions• Application sheets:– Humidity Sensor Performance Characteristics– Humidity Sensor Theory and Behavior– Humidity Sensor Moisture and Psychrometrics– Thermoset Polymer-based Capacitive Sensors

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WARNINGWARNINGMISUSE OF DOCUMENTATION• The information presented in this product sheet is forreference only. Do not use this document as a productinstallation guide.
• Complete installation, operation, and maintenanceinformation is provided in the instructions supplied witheach product.
Failure to comply with these instructions could result
in death or serious injury.
WARRANTY/REMEDY
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 orderacknowledgement or consult your local sales office for specificwarranty details. If warranted goods are returned to Honeywellduring the period of coverage, Honeywell will repair or replace,at its option, without charge those items it finds defective. Theforegoing is buyer’s sole remedy and is in lieu of all otherwarranties, expressed or implied, including those ofmerchantability and fitness for a particular purpose. In noevent shall Honeywell be liable for consequential, special,or indirect damages.
While we provide application assistance personally, throughour literature and the Honeywell web site, it is up to thecustomer to determine the suitability of the product in theapplication.

PERSONAL INJURY
DO NOT USE these products as safety or emergency stop
devices or in any other application where failure of theproduct could result in personal injury.
Failure to comply with these instructions could result
in death or serious injury.
SALES AND SERVICE
Honeywell serves its customers through a worldwide networkof sales offices, representatives and distributors. For
application assistance, current specifications, pricing or nameof the nearest Authorized Distributor, contact your local sales
office or:E-mail: info.sc@honeywell.com
Internet: www.honeywell.com/sensing
Phone and Fax:
Asia Pacific+65 6355-2828+65 6445-3033 Fax
Europe+44 (0) 1698 481481+44 (0) 1698 481676 Fax
Latin America+1-305-805-8188+1-305-883-8257 Fax
USA/Canada+1-800-537-6945+1-815-235-6847+1-815-235-6545 Fax

Specifications may change without notice. The information we
supply is believed to be accurate and reliable as of thisprinting. However, we assume no responsibility for its use.

Automation and Control Solutions
Sensing and Control
Honeywell
1985 Douglas Drive North
Minneapolis, MN 55422
www.honeywell.com/sensing

009020-1-EN IL50 GLO Printed in USA
January 2007
© 2007 Honeywell International Inc. All rights reserved.