HOA0865-N55 Equivalent & Substitute Parts

Part Overview

The HOA0865-N55 is an optical sensor manufactured by Honeywell Sensing and Productivity Solutions, designed for through-beam sensing applications with transistor output configuration. This component operates as an unamplified optical sensor with PCB mount packaging and a sensing distance of 0.125" (3.18mm).

The HOA0865-N55 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 sensor technology.

Substiute Parts

HOA0865-N55

Honeywell Sensing and Productivity SolutionsIn Stock: 857HOA0865-N55 Datasheet

Current PartRFQ

RPI-352

Rohm SemiconductorIn Stock: 55923RPI-352 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the HOA0865-N55 are identified based on the following critical parameters that determine functional compatibility:

Sensing Method: Through-Beam operation is the primary functional requirement. Substitute parts must maintain this sensing methodology.

Output Configuration: The transistor output configuration establishes the electrical interface. Phototransistor outputs are functionally equivalent as they provide comparable signal characteristics for through-beam applications.

Sensing Distance: The 0.125" (3.18mm) sensing distance defines the optical gap tolerance. Substitute parts with sensing distances within 0.118" (3mm) to 0.125" (3.18mm) maintain compatibility with existing mechanical designs.

Electrical Ratings: Maximum collector current (30 mA), collector-emitter breakdown voltage (30 V), and DC forward current (50 mA) establish the electrical operating envelope. Substitute parts must meet or exceed these specifications.

Mounting Configuration: Through-hole PCB mount packaging ensures mechanical compatibility with existing circuit board layouts.

Operating Temperature Range: The -40°C ~ 85°C operating range defines the thermal operating envelope. Substitute parts must support this temperature range or a compatible subset.

Type Classification: Unamplified sensor operation without integrated signal conditioning is the baseline requirement.

Parameter Comparison

Engineering Selection Recommendations

RPI-352 (Rohm Semiconductor) is identified as a functional substitute for the HOA0865-N55 based on the following engineering criteria:

Functional Equivalence: Both components operate as through-beam optical sensors with phototransistor output configurations. The electrical ratings for collector current (30 mA maximum) and collector-emitter breakdown voltage (30 V maximum) are identical, ensuring compatibility with existing circuit designs.

Sensing Distance Compatibility: The RPI-352 sensing distance of 0.118" (3mm) is within 0.007" of the HOA0865-N55 specification of 0.125" (3.18mm). This variance is acceptable for through-beam slot sensor applications where mechanical tolerances accommodate minor optical gap variations.

Response Time Advantage: The RPI-352 provides a response time of 10µs compared to the HOA0865-N55 at 15µs, representing improved switching performance without introducing incompatibility.

Compliance Status: The RPI-352 maintains ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, meeting current regulatory requirements. The HOA0865-N55 is RoHS Compliant, and the RPI-352 upgrade to ROHS3 compliance ensures forward compatibility with evolving environmental standards.

Product Availability: The RPI-352 is classified as Active with 55,830 units in stock, providing reliable supply chain continuity compared to the obsolete HOA0865-N55 status.

Operating Temperature Consideration: The RPI-352 operating temperature range of -25°C ~ 85°C does not extend to the -40°C lower limit of the HOA0865-N55. Applications requiring operation below -25°C require verification of alternative substitute options or confirmation that the lower temperature range is not required for the specific application.

Frequently Asked Questions (FAQ)

Q: Can the RPI-352 directly replace the HOA0865-N55 in existing PCB designs?

A: The RPI-352 is mechanically and electrically compatible with the HOA0865-N55 for through-hole PCB mount applications. Both components share identical collector current (30 mA) and collector-emitter breakdown voltage (30 V) specifications. The sensing distance variance of 0.007" is within acceptable tolerances for slot sensor applications. Direct substitution is supported for applications operating within the -25°C ~ 85°C temperature range.

Q: What is the significance of the sensing distance difference between these components?

A: The HOA0865-N55 specifies 0.125" (3.18mm) sensing distance, while the RPI-352 specifies 0.118" (3mm). This 0.007" difference represents approximately 5.6% variance. For through-beam slot sensor applications, mechanical slot tolerances typically accommodate this variance. The optical gap in slot sensor designs is determined by the physical slot width, and both sensors will function within standard slot dimensions.

Q: Are there electrical interface differences between transistor and phototransistor output configurations?

A: Both the HOA0865-N55 transistor output and the RPI-352 phototransistor output provide collector-emitter switching functionality with identical maximum ratings (30 mA collector current, 30 V breakdown voltage). The phototransistor configuration in the RPI-352 provides light-activated switching equivalent to the transistor output in the HOA0865-N55. Circuit interface compatibility is maintained.

Q: What is the impact of the operating temperature range difference?

A: The HOA0865-N55 operates from -40°C ~ 85°C, while the RPI-352 operates from -25°C ~ 85°C. The RPI-352 does not support operation below -25°C. Applications requiring operation at temperatures below -25°C cannot use the RPI-352 as a substitute. Applications operating within the -25°C ~ 85°C range are fully compatible.

Q: Does the faster response time of the RPI-352 (10µs vs. 15µs) create compatibility issues?

A: No. The RPI-352 response time of 10µs is faster than the HOA0865-N55 specification of 15µs. Faster response time does not create incompatibility; it represents improved performance. Applications designed for 15µs response time will function correctly with the faster 10µs response time of the RPI-352.

Q: What compliance certifications should be verified for new designs?

A: The RPI-352 carries ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating. These certifications meet current environmental and reliability standards for electronic component manufacturing. The HOA0865-N55 RoHS Compliant status is superseded by the RPI-352 ROHS3 certification for new design implementations.

Q: Is the RPI-352 suitable for high-volume production replacement?

A: The RPI-352 is classified as Active with 55,830 units in stock, providing reliable supply chain availability for production requirements. The HOA0865-N55 is obsolete with limited inventory (764 units). The RPI-352 is suitable for high-volume production replacement based on availability and active product status.