HOA6972-N55 Equivalent & Substitute Parts

Part Overview

The HOA6972-N55 is a through-beam optical sensor manufactured by Honeywell Sensing and Productivity Solutions, designed for PCB mount applications with a 0.125" (3.18mm) sensing distance. This component features totem pole inverted output configuration and operates across industrial temperature ranges from -40°C to 70°C.

The HOA6972-N55 is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support ongoing production requirements for applications utilizing this sensor architecture.

Substiute Parts

HOA6972-N55

Honeywell Sensing and Productivity SolutionsIn Stock: 894HOA6972-N55 Datasheet

Current PartRFQ

OPB972N51

TT Electronics/Optek TechnologyIn Stock: 2981OPB972N51 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the HOA6972-N55 is determined by strict alignment of the following critical parameters:

Mandatory Matching Parameters:

• Sensing Distance: 0.125" (3.18mm)
• Sensing Method: Through-Beam
• Output Configuration: Totem Pole, Inverted
• Mounting Type: Through Hole
• Current - Supply: 15 mA
• Response Time: 70ns
• Operating Temperature Range: -40°C ~ 70°C
• Package / Case: PCB Mount

Acceptable Variation:

• Voltage - Supply: The HOA6972-N55 operates at 4.5V ~ 7V. Substitute parts with voltage ranges that fall within or are compatible with this specification are acceptable.

The OPB972N51 manufactured by TT Electronics/Optek Technology meets all mandatory matching parameters. This part is classified as active product status and maintains full compliance with RoHS3 and REACH requirements.

Parameter Comparison

Engineering Selection Recommendations

OPB972N51 Substitution Basis:

The OPB972N51 is a direct functional equivalent to the HOA6972-N55 based on matching electrical specifications, mechanical configuration, and environmental operating parameters. All critical sensor characteristics—sensing distance, through-beam detection method, totem pole inverted output, response time, and temperature range—are identical between the two parts.

The OPB972N51 carries active product status, ensuring ongoing availability and manufacturer support. This part is ROHS3 compliant, representing an advancement in environmental compliance standards compared to the RoHS compliant HOA6972-N55. Both parts maintain REACH unaffected status and carry identical moisture sensitivity ratings.

The voltage supply specification for the OPB972N51 (4.75V ~ 5.25V) is a subset of the HOA6972-N55 range (4.5V ~ 7V), indicating tighter tolerance specifications. Applications operating within the OPB972N51 voltage window will experience full compatibility.

Current inventory status shows 2905 units of OPB972N51 available, providing supply chain continuity for production requirements.

Frequently Asked Questions (FAQ)

Q: Can the OPB972N51 be used as a direct replacement for the HOA6972-N55 in existing designs?

A: Yes. The OPB972N51 matches all critical electrical and mechanical parameters of the HOA6972-N55, including sensing distance, output configuration, mounting type, current draw, response time, and operating temperature range. No circuit modifications are required for substitution.

Q: What is the difference in voltage supply specifications between these parts?

A: The HOA6972-N55 operates at 4.5V ~ 7V, while the OPB972N51 operates at 4.75V ~ 5.25V. The OPB972N51 voltage range is contained within the HOA6972-N55 specification window. Applications designed for the HOA6972-N55 that operate within the 4.75V ~ 5.25V window will function identically with the OPB972N51.

Q: Are there any compliance differences between these parts?

A: Both parts are REACH unaffected and carry MSL 1 (Unlimited) ratings. The OPB972N51 is ROHS3 compliant, while the HOA6972-N55 is RoHS compliant. ROHS3 represents a more current environmental compliance standard. Both parts meet regulatory requirements for their respective product lifecycles.

Q: What is the package configuration for both parts?

A: Both the HOA6972-N55 and OPB972N51 are PCB mount through-hole components with identical 0.125" (3.18mm) sensing distance specifications. Physical mounting and PCB layout compatibility is maintained between the two parts.

Q: Why is the HOA6972-N55 classified as obsolete?

A: The HOA6972-N55 has reached end-of-life status with the manufacturer. The OPB972N51 is an active product offering equivalent functionality with current manufacturer support and ongoing availability.