RPI-576A Equivalent & Substitute Parts

Part Overview

The RPI-576A is an optical sensor manufactured by Rohm Semiconductor, classified as a through-beam phototransistor with PCB mount configuration. This component features a 0.197" (5mm) sensing distance and unamplified output. The part is currently obsolete, making identification of compatible alternatives essential for ongoing system support and new design implementations. Active substitute options maintain functional equivalence while offering improved availability and current product status.

Substiute Parts

RPI-576A

Rohm SemiconductorIn Stock: 7514RPI-576A Datasheet

Current PartRFQ

RPI-441C1

Rohm SemiconductorIn Stock: 181784RPI-441C1 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RPI-576A is determined by strict equivalence across the following critical parameters:

• Sensing Method: Through-Beam configuration required
• Output Configuration: Phototransistor output type
• Mounting Type: Through Hole PCB Mount
• Electrical Specifications: Maximum collector current (30 mA), maximum forward current (50 mA), and collector-emitter breakdown voltage (30 V)
• Response Time: 10µs performance maintained
• Operating Temperature Range: -25°C ~ 85°C compatibility
• Type: Unamplified sensor operation

The RPI-441C1 qualifies as a direct substitute based on these parameters. The primary difference is the reduced sensing distance of 0.157" (4mm) versus the original 0.197" (5mm), which represents a mechanical variation within the same product family while maintaining all electrical and functional characteristics.

Parameter Comparison

Engineering Selection Recommendations

The RPI-441C1 is the manufacturer-recommended substitute for the obsolete RPI-576A. Both components maintain identical electrical performance specifications, including collector current limits, forward current capacity, and breakdown voltage ratings. The RPI-441C1 offers the advantage of active product status with significantly higher inventory availability (181,741 units in stock versus 7,456 units for the RPI-576A).

Both parts maintain ROHS3 compliance and unlimited moisture sensitivity classification, ensuring regulatory and environmental compatibility. The primary design consideration is the reduced sensing distance of the RPI-441C1 (0.157" versus 0.197"), which must be evaluated against specific application requirements for slot width and object detection positioning.

Frequently Asked Questions (FAQ)

Q: Can RPI-441C1 directly replace RPI-576A in existing designs?

A: The RPI-441C1 provides electrical and functional equivalence. The reduced sensing distance (4mm versus 5mm) requires mechanical evaluation to confirm compatibility with existing slot widths and detection geometry.

Q: Are there compliance differences between these parts?

A: Both parts maintain identical RoHS3 compliance status and unlimited moisture sensitivity classification. No regulatory or environmental compliance differences exist.

Q: What is the primary reason for substitution?

A: The RPI-576A is obsolete. The RPI-441C1 is an active product with superior availability and identical electrical specifications.

Q: How do the response times compare?

A: Both components maintain 10µs response time specifications, ensuring equivalent switching performance in through-beam detection applications.

Q: Are packaging differences significant?

A: Both parts use through-hole PCB mount configuration. The RPI-441C1 is supplied in bulk packaging, while the RPI-576A packaging specification was not provided.