HIH-4020-002 Equivalent & Substitute Parts

Part Overview

The HIH-4020-002 is an active humidity sensor manufactured by Honeywell Sensing and Productivity Solutions. This through-hole mounted analog voltage output sensor measures relative humidity across the full 0–100% RH range with ±3.5% RH accuracy and a 5-second response time. The device operates across an extended temperature range of -40°C to 85°C and is powered by a 4V to 5.8V supply voltage.

Substitute parts are identified when equivalent electrical performance, output characteristics, and mechanical compatibility are maintained across the sensor series. Alternative models within the HIH-4000 series provide identical functional parameters while offering different packaging options or series variants.

Key Parameters

Parameter	Value
Sensor Type	Humidity
Humidity Range	0 ~ 100% RH
Output Type	Analog Voltage
Accuracy	±3.5% RH
Response Time	5 s
Voltage Supply	4V ~ 5.8V
Operating Temperature	-40°C ~ 85°C
Mounting Type	Through Hole
Output at Reference Condition	3.268V @ 75.3% RH
RoHS Status	RoHS Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the HIH-4020-002 is determined by matching the following critical parameters:

Electrical Equivalence Criteria:

Humidity measurement range: 0 ~ 100% RH
Output type: Analog Voltage
Accuracy specification: ±3.5% RH
Response time: 5 seconds
Supply voltage range: 4V ~ 5.8V
Output voltage at reference condition: 3.268V @ 75.3% RH

Mechanical Compatibility Criteria:

Mounting type: Through Hole (primary substitutes) or Surface Mount (alternative mounting)
Package classification: Housed Sensor
Operating temperature range: -40°C ~ 85°C

Compliance Criteria:

Product status: Active
RoHS compliance: Compliant
Moisture sensitivity level: 1 (Unlimited)

Substitute parts are grouped within the Honeywell HIH-4000 series, which includes the HIH-4010, HIH-4020, HIH-4021, and HIH-4031 base product families. All identified substitutes maintain identical electrical performance and environmental specifications. Differences exist only in series designation and packaging configuration.

Parameter Comparison

Part Number	Series	Humidity Range	Output Type	Accuracy	Response Time	Supply Voltage	Operating Temperature	Mounting Type	Output @ 75.3% RH	RoHS Status	Inventory
HIH-4020-002	HIH-4020	0 ~ 100% RH	Analog Voltage	±3.5% RH	5 s	4V ~ 5.8V	-40°C ~ 85°C	Through Hole	3.268V	RoHS Compliant	954 Pcs
HIH-4010-001	HIH-4010	0 ~ 100% RH	Analog Voltage	±3.5% RH	5 s	4V ~ 5.8V	-40°C ~ 85°C	Through Hole	3.268V	RoHS Compliant	1001 Pcs
HIH-4010-002	HIH-4010	0 ~ 100% RH	Analog Voltage	±3.5% RH	5 s	4V ~ 5.8V	-40°C ~ 85°C	Through Hole	3.268V	RoHS Compliant	1479 Pcs
HIH-4010-003	HIH-4010	0 ~ 100% RH	Analog Voltage	±3.5% RH	5 s	4V ~ 5.8V	-40°C ~ 85°C	Through Hole	3.268V	RoHS Compliant	847 Pcs
HIH-4010-004	HIH-4010	0 ~ 100% RH	Analog Voltage	±3.5% RH	5 s	4V ~ 5.8V	-40°C ~ 85°C	Through Hole	3.268V	RoHS Compliant	1026 Pcs
HIH-4020-001	HIH-4020	0 ~ 100% RH	Analog Voltage	±3.5% RH	5 s	4V ~ 5.8V	-40°C ~ 85°C	Through Hole	3.268V	RoHS Compliant	980 Pcs
HIH-4021-001	HIH-4021	0 ~ 100% RH	Analog Voltage	±3.5% RH	5 s	4V ~ 5.8V	-40°C ~ 85°C	Through Hole	3.268V	RoHS Compliant	4297 Pcs
HIH-4021-002	HIH-4021	0 ~ 100% RH	Analog Voltage	±3.5% RH	5 s	4V ~ 5.8V	-40°C ~ 85°C	Through Hole	3.268V	RoHS Compliant	810 Pcs
HIH-4021-003	HIH-4021	0 ~ 100% RH	Analog Voltage	±3.5% RH	5 s	4V ~ 5.8V	-40°C ~ 85°C	Through Hole	3.268V	RoHS Compliant	6251 Pcs
HIH-4021-004	HIH-4021	0 ~ 100% RH	Analog Voltage	±3.5% RH	5 s	4V ~ 5.8V	-40°C ~ 85°C	Through Hole	3.268V	RoHS Compliant	1189 Pcs
HIH-4031-003	HIH-4031	0 ~ 100% RH	Analog Voltage	±3.5% RH	5 s	4V ~ 5.8V	-40°C ~ 85°C	Surface Mount	3.268V	RoHS Compliant	1586 Pcs

Engineering Selection Recommendations

All substitute parts listed maintain active product status and full RoHS compliance. Selection between through-hole and surface-mount variants depends on circuit board assembly requirements.

Through-Hole Mounting Substitutes: HIH-4010 series (HIH-4010-001, HIH-4010-002, HIH-4010-003, HIH-4010-004), HIH-4020 series (HIH-4020-001), and HIH-4021 series (HIH-4021-001, HIH-4021-002, HIH-4021-003, HIH-4021-004) are direct functional equivalents for applications requiring through-hole soldering. These parts are interchangeable with the HIH-4020-002 in existing through-hole PCB designs.

Surface-Mount Alternative: HIH-4031-003 provides equivalent electrical performance in a surface-mount package configuration. This variant is suitable for applications requiring automated assembly processes or compact board layouts. The 4-SMD package differs mechanically from the through-hole housing but maintains identical sensor specifications and environmental ratings.

Inventory Availability: HIH-4021-003 offers the highest inventory level at 6251 pieces, followed by HIH-4021-001 at 4297 pieces. HIH-4010-002 provides 1479 pieces. These options support high-volume procurement requirements.

Frequently Asked Questions (FAQ)

Q: Can HIH-4010 series parts replace HIH-4020-002 in my application?

A: Yes. HIH-4010-001, HIH-4010-002, HIH-4010-003, and HIH-4010-004 are parametric equivalents. All maintain identical humidity range (0–100% RH), accuracy (±3.5% RH), response time (5 seconds), supply voltage (4V–5.8V), and operating temperature (-40°C to 85°C). Through-hole mounting is identical. The series designation difference does not affect functional performance.

Q: What is the difference between HIH-4020-002 and HIH-4020-001?

A: Both parts belong to the HIH-4020 series and share identical electrical and environmental specifications. The numeric suffix (-001 vs. -002) indicates different manufacturing batches or packaging configurations within the same product line. Functional substitution is direct.

Q: Can I use HIH-4031-003 as a substitute if my PCB is designed for through-hole mounting?

A: No. HIH-4031-003 uses surface-mount (SMD) packaging, while HIH-4020-002 uses through-hole mounting. PCB redesign is required to accommodate the different package type. If through-hole mounting is mandatory, select from HIH-4010, HIH-4020, or HIH-4021 series parts.

Q: Are all substitute parts RoHS compliant?

A: Yes. All listed substitute parts carry RoHS Compliant status and maintain Moisture Sensitivity Level 1 (Unlimited), matching the compliance profile of HIH-4020-002.

Q: Which substitute part has the best inventory availability?

A: HIH-4021-003 provides the highest stock level at 6251 pieces. HIH-4021-001 follows with 4297 pieces. Both are through-hole mounted and fully equivalent to HIH-4020-002.

Q: Do all substitutes operate across the same temperature range?

A: Yes. All substitute parts operate from -40°C to 85°C, matching the HIH-4020-002 operating temperature specification.

Q: Can I mix different substitute part numbers in the same design?

A: Yes. All substitute parts are parametrically equivalent and maintain identical output characteristics (3.268V @ 75.3% RH). Mixing part numbers from different series (HIH-4010, HIH-4020, HIH-4021) within the same application does not affect circuit performance.

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