Panasonic PM-R54 Optical Sensor Equivalent & Substitute Parts

Part Overview

The Panasonic PM-R54 is an optical through-beam sensor module with NPN output configuration and selectable Dark-ON/Light-ON operation. This unamplified slot-type sensor features a 0.197" (5mm) sensing distance and is designed for chassis mount applications with wire leads. The PM-R54 is classified as obsolete, making identification of compatible substitute parts essential for system maintenance, repair, and new design implementations where equivalent functionality is required.

Substiute Parts

PM-R54

Panasonic Industrial Automation SalesIn Stock: 807PM-R54 Datasheet

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PM-R45

Panasonic Industrial Automation SalesIn Stock: 958PM-R45 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the PM-R54 is determined by the following critical parameters:

Functional Compatibility Criteria:

• Sensing method: Through-beam optical detection
• Output type: NPN configuration
• Mounting interface: Chassis mount with wire leads
• Package form factor: Module, slot-type construction
• Response time: 20µs or faster
• Operating temperature range: Minimum -25°C ~ 55°C coverage
• Environmental compliance: RoHS compliance required

Allowable Variations:

• Sensing distance tolerance: ±0.039" (±1mm) from 0.197" (5mm) baseline
• Collector current: Up to 15 mA maximum
• Supply voltage compatibility: 5V ~ 24V range acceptable
• Response time: 20µs or 80µs both acceptable for through-beam applications

The PM-R45 qualifies as a substitute based on matching through-beam sensing method, NPN output, chassis mount configuration, wire lead package, and compatible response time specifications.

Parameter Comparison

Engineering Selection Recommendations

PM-R45 as Primary Substitute:

The PM-R45 is the qualified substitute for the obsolete PM-R54 based on functional equivalence in through-beam optical sensing architecture. Both parts maintain identical collector current specifications (15 mA maximum), matching response time capability (20µs), and identical operating temperature range (-25°C ~ 55°C). Both are unamplified module-type sensors with chassis mount configuration and wire lead connectivity.

The PM-R45 offers the advantage of active product status, ensuring continued availability and supply chain reliability. The part carries ROHS3 compliance, exceeding the RoHS compliance of the PM-R54, making it suitable for applications with enhanced environmental and regulatory requirements.

Compatibility Considerations:

The PM-R45 features a 0.236" (6mm) sensing distance compared to the PM-R54's 0.197" (5mm), representing a 0.039" (1mm) increase. This difference is within acceptable tolerance for through-beam slot-type sensor applications where mechanical slot width accommodates both sensing distances. The PM-R45 output configuration is NPN Open Collector, compared to the PM-R54's selectable Dark-ON/Light-ON mode. Applications requiring selectable output polarity must implement external logic or configuration to achieve equivalent functionality.

Both parts share identical ECCN (EAR99) and HTSUS (8543.70.9860) classifications, confirming regulatory equivalence for export and tariff purposes.

Frequently Asked Questions (FAQ)

Q: Can the PM-R45 directly replace the PM-R54 in existing applications?

A: The PM-R45 provides functional equivalence for through-beam optical sensing applications. The 0.039" (1mm) increase in sensing distance is compatible with standard slot-type mechanical interfaces. However, the PM-R45 uses NPN Open Collector output rather than selectable Dark-ON/Light-ON configuration. Applications requiring output polarity selection must implement external logic to achieve equivalent behavior.

Q: What is the significance of the sensing distance difference between PM-R54 (5mm) and PM-R45 (6mm)?

A: The sensing distance difference of 0.039" (1mm) reflects the physical gap between emitter and receiver in the slot-type module. This difference is within standard mechanical tolerance for chassis-mounted optical sensor slots. Both parts operate on identical through-beam detection principles and maintain equivalent response time (20µs).

Q: Are both parts RoHS compliant?

A: Yes. The PM-R54 carries RoHS compliance certification. The PM-R45 carries ROHS3 compliance, which represents an enhanced environmental standard. Both parts meet RoHS requirements for hazardous substance restrictions.

Q: Why is the PM-R54 classified as obsolete?

A: The PM-R54 is no longer in active production. The PM-R45 represents the current active equivalent in the Panasonic PM series optical sensor portfolio, offering identical functional performance with continued manufacturing support and supply availability.

Q: What are the key parameters that determine substitution eligibility?

A: Substitution is determined by: (1) Sensing method (through-beam), (2) Output type (NPN configuration), (3) Mounting interface (chassis mount), (4) Package form (module with wire leads), (5) Response time capability (20µs or faster), (6) Operating temperature range coverage (-25°C ~ 55°C minimum), and (7) Environmental compliance (RoHS certification). The PM-R45 meets all these criteria.

Q: Is the PM-R45 available in the same packaging as the PM-R54?

A: Both parts use module-type construction with wire leads and chassis mount configuration. The PM-R54 specifies slot-type form factor, while the PM-R45 specifies module form factor. Both are compatible with standard through-beam optical sensor slot interfaces used in industrial automation applications.