HIH-4020-003 Equivalent & Substitute Parts

Part Overview

The HIH-4020-003 is an analog humidity sensor manufactured by Honeywell Sensing and Productivity Solutions. This through-hole mounted sensor measures relative humidity across the full 0–100% RH range with ±3.5% RH accuracy and delivers analog voltage output. The device operates from 4V to 5.8V supply voltage with a 5-second response time and is rated for -40°C to 85°C operating temperature. The HIH-4020-003 maintains Active product status and holds RoHS Compliance certification. Equivalent and substitute parts are identified based on matching electrical performance parameters, output characteristics, and environmental operating specifications that ensure functional interchangeability within system designs.

Key Parameters

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

Substitute Part Grouping Explanation

Substitute parts for the HIH-4020-003 are qualified based on the following critical parameters that determine functional equivalence:

Electrical Performance Matching:

Humidity measurement range: 0–100% RH
Output type: Analog Voltage
Output voltage characteristic: 3.268V @ 75.3% RH
Accuracy specification: ±3.5% RH
Response time: 5 seconds
Supply voltage range: 4V–5.8V
Operating temperature range: -40°C–85°C

Mechanical and Environmental Compatibility:

Mounting type (through-hole or surface-mount variants)
Package classification: Housed Sensor
RoHS Compliance status
Moisture Sensitivity Level: 1 (Unlimited)

Substitutes are drawn from the HIH-4010, HIH-4020, and HIH-4021 series, which share identical electrical specifications. The HIH-4031-003 is included as a surface-mount alternative with equivalent electrical performance. All substitute parts maintain Active product status and RoHS Compliance certification.

Parameter Comparison

Part Number	Series	Humidity Range	Output Type	Accuracy	Response Time	Supply Voltage	Operating Temp	Mounting Type	Package	RoHS Status	Inventory (Pcs)
HIH-4020-003	HIH-4020	0–100% RH	Analog Voltage	±3.5% RH	5 s	4V–5.8V	-40°C–85°C	Through Hole	Housed Sensor	RoHS Compliant	1157
HIH-4010-001	HIH-4010	0–100% RH	Analog Voltage	±3.5% RH	5 s	4V–5.8V	-40°C–85°C	Through Hole	Housed Sensor	RoHS Compliant	1001
HIH-4010-002	HIH-4010	0–100% RH	Analog Voltage	±3.5% RH	5 s	4V–5.8V	-40°C–85°C	Through Hole	Housed Sensor	RoHS Compliant	1479
HIH-4010-003	HIH-4010	0–100% RH	Analog Voltage	±3.5% RH	5 s	4V–5.8V	-40°C–85°C	Through Hole	Housed Sensor	RoHS Compliant	847
HIH-4010-004	HIH-4010	0–100% RH	Analog Voltage	±3.5% RH	5 s	4V–5.8V	-40°C–85°C	Through Hole	Housed Sensor	RoHS Compliant	1026
HIH-4020-001	HIH-4020	0–100% RH	Analog Voltage	±3.5% RH	5 s	4V–5.8V	-40°C–85°C	Through Hole	Housed Sensor	RoHS Compliant	980
HIH-4021-001	HIH-4021	0–100% RH	Analog Voltage	±3.5% RH	5 s	4V–5.8V	-40°C–85°C	Through Hole	Housed Sensor	RoHS Compliant	4297
HIH-4021-002	HIH-4021	0–100% RH	Analog Voltage	±3.5% RH	5 s	4V–5.8V	-40°C–85°C	Through Hole	Housed Sensor	RoHS Compliant	810
HIH-4021-003	HIH-4021	0–100% RH	Analog Voltage	±3.5% RH	5 s	4V–5.8V	-40°C–85°C	Through Hole	Housed Sensor	RoHS Compliant	6251
HIH-4021-004	HIH-4021	0–100% RH	Analog Voltage	±3.5% RH	5 s	4V–5.8V	-40°C–85°C	Through Hole	Housed Sensor	RoHS Compliant	1189
HIH-4031-003	HIH-4031	0–100% RH	Analog Voltage	±3.5% RH	5 s	4V–5.8V	-40°C–85°C	Surface Mount	Housed Sensor	RoHS Compliant	1586

Engineering Selection Recommendations

All substitute parts listed maintain identical electrical performance specifications and environmental operating ranges as the HIH-4020-003. Selection among through-hole mounted alternatives (HIH-4010 and HIH-4021 series) depends on PCB layout requirements and assembly process compatibility. The HIH-4031-003 provides surface-mount functionality with equivalent electrical characteristics for designs utilizing SMD assembly processes.

All substitute parts hold Active product status and RoHS Compliance certification, ensuring regulatory compliance and long-term supply availability. Moisture Sensitivity Level 1 (Unlimited) classification applies uniformly across all alternatives, indicating no moisture-related handling restrictions during storage or assembly.

Inventory availability varies across substitute options. HIH-4021-003 maintains the highest stock level at 6251 units, while HIH-4021-002 and HIH-4010-003 show lower availability at 810 and 847 units respectively.

Frequently Asked Questions (FAQ)

Q: What determines if a part can substitute for the HIH-4020-003?

A: Substitution is based on matching the following parameters: humidity measurement range (0–100% RH), analog voltage output type, ±3.5% RH accuracy, 5-second response time, 4V–5.8V supply voltage range, -40°C–85°C operating temperature, and RoHS Compliance status. All listed substitutes meet these criteria.

Q: Can I use the HIH-4031-003 as a direct replacement for the HIH-4020-003?

A: The HIH-4031-003 provides electrical equivalence but differs in mounting type. The HIH-4020-003 uses through-hole mounting, while the HIH-4031-003 is surface-mount (SMD). PCB layout and assembly process must accommodate the surface-mount package format.

Q: Are all substitute parts currently in stock?

A: Yes, all substitute parts listed are available as new original stock. Inventory quantities vary by part number, ranging from 810 to 6251 units.

Q: Do substitute parts require different circuit design considerations?

A: No. All substitute parts share identical electrical specifications, supply voltage requirements, and output characteristics. Circuit design remains unchanged when substituting between listed alternatives.

Q: What is the significance of Moisture Sensitivity Level 1?

A: MSL 1 (Unlimited) indicates no moisture-related handling restrictions. These components do not require special dry-pack storage or baking procedures prior to assembly.

Q: Can I mix HIH-4010, HIH-4020, and HIH-4021 series parts in the same design?

A: Yes. All three series share identical electrical performance parameters and environmental specifications. Series designation reflects manufacturing lineage but does not affect functional equivalence.

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