Panasonic PM-K54 Optical Sensor Equivalent & Substitute Parts

Part Overview

The Panasonic PM-K54 is an optical through-beam sensor module with NPN output configuration and selectable Dark-ON/Light-ON operation. This unamplified sensor features a 0.197" (5mm) sensing distance and is designed for slot-type chassis mount applications with wire leads. The PM-K54 is classified as obsolete, making identification of compatible substitute parts essential for system maintenance and component sourcing.

Substiute Parts

PM-K54

Panasonic Industrial Automation SalesIn Stock: 78678PM-K54 Datasheet

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PM-K45

Panasonic Industrial Automation SalesIn Stock: 1721PM-K45 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the PM-K54 is based on the following critical parameters that must align between the main part and substitute candidates:

• Sensing Method: Through-Beam operation is required for functional equivalence
• Output Configuration: NPN output type must be maintained
• Mounting Type: Chassis mount with wire leads packaging
• Response Time: Maximum 20µs response time capability
• Operating Temperature Range: -25°C ~ 55°C compatibility
• Current and Voltage Ratings: Collector current and breakdown voltage specifications must support the application

The PM-K45 qualifies as a substitute based on these parameters. Both sensors share identical sensing methodology, NPN output architecture, chassis mount configuration, matching response time specifications, and overlapping operating temperature ranges. The primary distinction is the sensing distance: PM-K45 operates at 0.236" (6mm) compared to PM-K54's 0.197" (5mm).

Parameter Comparison

Engineering Selection Recommendations

The PM-K45 is the designated substitute for the obsolete PM-K54 based on functional and compliance alignment. Both sensors maintain identical through-beam sensing methodology, NPN output architecture, and operating temperature specifications. The PM-K45 is currently in active production status with ROHS3 compliance certification, ensuring long-term component availability and regulatory adherence.

The primary application consideration is the sensing distance differential: the PM-K45 operates at 0.236" (6mm) versus the PM-K54's 0.197" (5mm). This 0.039" (1mm) increase in sensing distance must be evaluated within the specific mechanical and optical constraints of the target application. Both sensors share identical response time capability at 20µs, supporting equivalent switching performance in time-critical applications.

Frequently Asked Questions (FAQ)

Q: Can the PM-K45 directly replace the PM-K54 in existing applications?

A: The PM-K45 is functionally equivalent for through-beam sensing applications requiring NPN output and chassis mount configuration. The increased sensing distance of 0.236" (6mm) versus 0.197" (5mm) must be accommodated within the mechanical slot design and optical path of the target application.

Q: What is the significance of the sensing distance difference?

A: Sensing distance defines the maximum gap between the emitter and receiver in through-beam configuration. The PM-K45's 1mm greater sensing distance provides increased tolerance for mechanical spacing but requires verification that the application's slot width and optical alignment accommodate this specification.

Q: Are there differences in output configuration between these sensors?

A: The PM-K54 features selectable Dark-ON/Light-ON operation, while the PM-K45 provides NPN Open Collector output. Both are NPN-type outputs suitable for digital logic interfacing. The PM-K54's selectable mode offers operational flexibility not present in the PM-K45.

Q: What is the compliance status of each part?

A: The PM-K54 holds RoHS Compliant certification. The PM-K45 meets the more recent ROHS3 Compliant standard, indicating enhanced environmental and material restriction compliance.

Q: Is the PM-K45 currently available?

A: Yes, the PM-K45 is classified as Active product status with documented inventory availability, whereas the PM-K54 is obsolete and subject to limited stock conditions.