HOA6972-T51 Equivalent & Substitute Parts

Part Overview

The HOA6972-T51 is a through-beam optical sensor manufactured by Honeywell Sensing and Productivity Solutions, designed for PCB-mounted 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-T51 is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this optical sensor specification.

Substiute Parts

HOA6972-T51

Honeywell Sensing and Productivity SolutionsIn Stock: 958HOA6972-T51 Datasheet

Current PartRFQ

OPB972N51

TT Electronics/Optek TechnologyIn Stock: 2981OPB972N51 Datasheet

SimilarRFQ

OPB972T51

TT Electronics/Optek TechnologyIn Stock: 1134OPB972T51 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the HOA6972-T51 are qualified based on strict electrical and mechanical parameter alignment. The following criteria determine substitution eligibility:

Critical 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: -40°C ~ 70°C
• Package / Case: PCB Mount

Voltage Supply Consideration: The HOA6972-T51 operates at 4.5V ~ 7V. Substitute parts operating at 4.75V ~ 5.25V fall within this range and are electrically compatible.

Compliance Alignment: Substitute parts must maintain RoHS compliance and MSL rating of 1 (Unlimited) to ensure regulatory and environmental compatibility.

The identified substitute parts OPB972N51 and OPB972T51 (both manufactured by TT Electronics/Optek Technology) satisfy all critical matching parameters and compliance requirements.

Parameter Comparison

Engineering Selection Recommendations

OPB972N51 and OPB972T51 Suitability:

Both OPB972N51 and OPB972T51 are active products manufactured by TT Electronics/Optek Technology and meet all electrical and mechanical specifications required for direct substitution of the obsolete HOA6972-T51.

Product Status Advantage: The substitute parts carry active product status, ensuring long-term availability and supply chain continuity compared to the obsolete HOA6972-T51.

Compliance Status: Both substitute parts maintain ROHS3 compliance, exceeding the RoHS compliance level of the original part. Both parts are REACH Unaffected, providing additional regulatory assurance for international applications.

Voltage Supply Range: The substitute parts operate within a narrower voltage range (4.75V ~ 5.25V) compared to the HOA6972-T51 (4.5V ~ 7V). This narrower range is fully contained within the original specification and presents no compatibility issues for applications designed to the original part's voltage requirements.

Inventory Availability: OPB972N51 maintains 2905 units in stock, and OPB972T51 maintains 1034 units in stock, providing immediate availability for production requirements.

Frequently Asked Questions (FAQ)

Q: Can OPB972N51 and OPB972T51 be used interchangeably with HOA6972-T51?

A: Yes. Both parts satisfy all critical electrical and mechanical parameters: identical sensing distance (0.125"), sensing method (through-beam), output configuration (totem pole inverted), mounting type (through hole), current draw (15 mA), response time (70ns), and operating temperature range (-40°C ~ 70°C). The voltage supply range of the substitutes (4.75V ~ 5.25V) is contained within the original specification (4.5V ~ 7V).

Q: What is the difference between OPB972N51 and OPB972T51?

A: Both parts share identical electrical specifications and are manufactured by TT Electronics/Optek Technology under the Photologic® series. The primary difference is packaging designation (N51 versus T51). Both are qualified substitutes for the HOA6972-T51 with equivalent performance characteristics.

Q: Why is the HOA6972-T51 classified as obsolete?

A: The HOA6972-T51 has been discontinued by Honeywell Sensing and Productivity Solutions. Active equivalent products from TT Electronics/Optek Technology (OPB972N51 and OPB972T51) provide identical functional performance and are recommended for new designs and ongoing production support.

Q: Are there any compliance differences between the original part and substitutes?

A: The substitute parts (OPB972N51 and OPB972T51) carry ROHS3 compliance, which represents an enhanced compliance level compared to the RoHS compliance of the original HOA6972-T51. Both substitute parts are REACH Unaffected. These differences represent compliance improvements with no negative impact on substitution suitability.

Q: What is the MSL rating for these optical sensors?

A: All three parts (HOA6972-T51, OPB972N51, and OPB972T51) carry MSL rating 1 (Unlimited), indicating unlimited shelf life and no moisture sensitivity restrictions during storage and handling.

Q: Are PCB layout modifications required when substituting these parts?

A: No. All three parts share identical mounting type (through hole) and package designation (PCB mount), requiring no PCB layout modifications for substitution.