HOA1885-012 Equivalent & Substitute Parts Reference

Part Overview

The HOA1885-012 is an optical sensor manufactured by Honeywell Sensing and Productivity Solutions, designed as a through-beam phototransistor module with slotted mounting configuration. This component operates with a 0.200" (5.08mm) sensing distance and provides unamplified phototransistor output for slot-type optical detection applications.

The HOA1885-012 is classified as obsolete. Identifying functionally equivalent substitute parts is necessary to support ongoing maintenance, repair, and new design requirements where this component is specified or currently deployed.

Substiute Parts

HOA1885-012

Honeywell Sensing and Productivity SolutionsIn Stock: 831HOA1885-012 Datasheet

Current PartRFQ

OPB855

TT Electronics/Optek TechnologyIn Stock: 4848OPB855 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the HOA1885-012 are identified based on strict electrical and mechanical compatibility criteria. The following parameters determine substitution eligibility:

Critical Matching Parameters:

• Sensing method: Through-Beam
• Output configuration: Phototransistor
• Type: Unamplified
• Current - DC Forward (If) (Max): 50 mA
• Voltage - Collector Emitter Breakdown (Max): 30 V
• Operating Temperature Range: -40°C ~ 85°C
• Mounting Type: Through Hole

Allowable Variation Parameters:

• Sensing distance: 0.200" (5.08mm) to 0.205" (5.21mm) represents a 2.4% tolerance variation within acceptable slot-type optical sensor specifications
• Package configuration: Module, Slotted to PCB Mount represents a mechanical form factor difference compatible with through-hole mounting applications
• Response time: Specification provided for main part (15µs); substitute part response time not specified in available data

The OPB855 meets all critical electrical parameters and operates within the same temperature range, making it functionally equivalent for through-beam phototransistor applications.

Parameter Comparison

Engineering Selection Recommendations

OPB855 Substitution Basis:

The OPB855 (TT Electronics/Optek Technology) is functionally equivalent to the HOA1885-012 for through-beam phototransistor applications based on the following engineering criteria:

1. Electrical Equivalence: Both components share identical maximum ratings for DC forward current (50 mA) and collector-emitter breakdown voltage (30 V), ensuring compatible circuit operation.

2. Thermal Equivalence: Operating temperature ranges are identical (-40°C ~ 85°C), supporting deployment in equivalent environmental conditions.

3. Functional Equivalence: Both components provide unamplified phototransistor output via through-beam sensing methodology, maintaining identical signal characteristics for downstream circuitry.

4. Sensing Distance Compatibility: The 0.205" (5.21mm) sensing distance of the OPB855 represents a 2.4% increase from the HOA1885-012 specification of 0.200" (5.08mm). This variation falls within acceptable tolerance for slot-type optical sensor applications.

5. Regulatory Compliance: The OPB855 maintains RoHS3 compliance and REACH unaffected status, meeting current environmental and regulatory requirements. The HOA1885-012 is RoHS compliant, indicating both components satisfy applicable compliance frameworks.

6. Product Availability: The OPB855 is classified as active product status with 4,782 units in stock, providing reliable supply continuity for the obsolete HOA1885-012.

Mechanical Consideration:

The OPB855 is configured as PCB Mount while the HOA1885-012 is Module, Slotted. Both utilize through-hole mounting technology. Circuit board layout and mechanical mounting structure must be evaluated during substitution to ensure physical compatibility with existing designs.

Frequently Asked Questions (FAQ)

Q: Can the OPB855 directly replace the HOA1885-012 in existing applications?

A: The OPB855 is electrically and functionally equivalent to the HOA1885-012 for through-beam phototransistor sensing. However, mechanical form factor differences (PCB Mount versus Module, Slotted) require evaluation of physical mounting compatibility with the existing circuit board layout and mechanical assembly.

Q: What is the significance of the 0.005" (0.13mm) sensing distance difference between these components?

A: The OPB855 sensing distance of 0.205" (5.21mm) compared to the HOA1885-012 specification of 0.200" (5.08mm) represents a 2.4% variation. For slot-type optical sensor applications, this difference is within acceptable tolerance and does not affect functional performance in standard through-beam detection circuits.

Q: Are there compliance or regulatory differences between these components?

A: Both components are RoHS compliant and REACH unaffected. The OPB855 carries ROHS3 certification, representing current compliance standards. Both components meet applicable environmental and regulatory requirements for electronic component deployment.

Q: Why is the HOA1885-012 classified as obsolete?

A: The HOA1885-012 is no longer manufactured by Honeywell Sensing and Productivity Solutions. The OPB855 provides functional equivalence with active product status and current manufacturing availability.

Q: What parameters must remain identical for substitution to be valid?

A: Sensing method (through-beam), output configuration (phototransistor), type (unamplified), maximum DC forward current (50 mA), maximum collector-emitter breakdown voltage (30 V), and operating temperature range (-40°C ~ 85°C) must remain identical. These parameters define functional equivalence for optical sensor substitution.

Q: Is response time a critical factor in substitution?

A: The HOA1885-012 specifies 15µs response time. The OPB855 response time specification is not provided in available technical data. Application-specific timing requirements must be evaluated against the HOA1885-012 specification to determine if response time performance is critical to circuit operation.

Q: What inventory status should be considered for component selection?

A: The OPB855 is available with 4,782 units in stock as new original inventory, providing reliable supply for production and maintenance applications. The HOA1885-012 is obsolete with 780 units remaining in stock.