HOA6990-L55 Equivalent & Substitute Parts

Part Overview

The HOA6990-L55 is an optical sensor manufactured by Honeywell Sensing and Productivity Solutions, designed as a through-beam optical sensor with a 0.125" (3.18mm) sensing distance. The device features wire leads for direct integration into chassis-mounted applications and operates with totem pole buffer output configuration.

The HOA6990-L55 is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or maintenance requirements for systems utilizing this component.

Substiute Parts

HOA6990-L55

Honeywell Sensing and Productivity SolutionsIn Stock: 956HOA6990-L55 Datasheet

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OPB990L55Z

TT Electronics/Optek TechnologyIn Stock: 1436OPB990L55Z Datasheet

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OPB990T55Z

TT Electronics/Optek TechnologyIn Stock: 5138OPB990T55Z Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the HOA6990-L55 are identified based on strict equivalence across the following critical parameters:

• Sensing Distance: 0.125" (3.18mm) — exact match required
• Sensing Method: Through-Beam — functional equivalence
• Output Configuration: Totem Pole, Buffer — electrical interface compatibility
• Mounting Type: Chassis Mount — mechanical compatibility
• Current - Supply: 15 mA — power consumption equivalence
• Response Time: 70ns — temporal performance equivalence
• Operating Temperature Range: -40°C ~ 70°C — environmental operating envelope
• Package / Case: Module, Wire Leads — form factor and connection type

The substitute parts OPB990L55Z and OPB990T55Z, manufactured by TT Electronics/Optek Technology, satisfy all critical parameters. Both parts are members of the Photologic® series and maintain functional and electrical equivalence to the HOA6990-L55 across all specified parameters.

Parameter Comparison

Engineering Selection Recommendations

Both OPB990L55Z and OPB990T55Z are active production parts manufactured by TT Electronics/Optek Technology and represent direct functional equivalents to the obsolete HOA6990-L55.

Voltage Supply Consideration: The substitute parts operate within a narrower voltage range (4.75V ~ 5.25V) compared to the HOA6990-L55 (4.5V ~ 7V). System designs operating at the extremes of the original voltage specification (below 4.75V or above 5.25V) require circuit verification to ensure compatibility with the substitute parts.

Compliance Status: Both substitute parts maintain ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements. The HOA6990-L55 carries RoHS compliance without the ROHS3 designation, reflecting its obsolete status.

Inventory Availability: OPB990T55Z maintains higher inventory levels (5028 units) compared to OPB990L55Z (1407 units), supporting supply chain continuity for high-volume applications.

Frequently Asked Questions (FAQ)

Q: Can OPB990L55Z and OPB990T55Z be used interchangeably with HOA6990-L55?

A: Both parts satisfy all critical electrical and mechanical parameters: sensing distance, sensing method, output configuration, mounting type, current supply, response time, and operating temperature range. The narrower voltage specification of the substitute parts requires verification against system power supply design.

Q: What is the difference between OPB990L55Z and OPB990T55Z?

A: Both parts are members of the Photologic® series and share identical electrical specifications and performance parameters. The designation difference (L55 versus T55) reflects internal design variants within the OPB990 base product family. Both are functionally equivalent for the HOA6990-L55 substitution.

Q: Are there any package or form factor differences?

A: All three parts—HOA6990-L55, OPB990L55Z, and OPB990T55Z—utilize identical packaging: Module with Wire Leads. Mechanical mounting and electrical connection are directly compatible.

Q: What compliance certifications apply to the substitute parts?

A: OPB990L55Z and OPB990T55Z carry ROHS3 compliance and REACH unaffected status. Both parts are classified under ECCN EAR99 and HTSUS 8541.49.8000, matching the original part's export classification.

Q: Is circuit redesign required when substituting these parts?

A: No circuit redesign is required for functional substitution. However, systems operating at supply voltages below 4.75V or above 5.25V must be evaluated against the narrower voltage specification of the substitute parts to ensure proper operation.