PM-U24-R Equivalent & Substitute Parts

Part Overview

The PM-U24-R is an optical sensor manufactured by Panasonic Industrial Automation Sales, designed as a through-beam slot-type module with NPN output configuration and selectable Dark-ON/Light-ON operation. This component is classified as obsolete, making identification of compatible substitute parts essential for system maintenance and new design implementations. The PM-U24-R operates with a 5mm sensing distance and provides rapid response characteristics suitable for industrial automation applications requiring reliable optical detection.

Substiute Parts

PM-U24-R

Panasonic Industrial Automation SalesIn Stock: 1206PM-U24-R Datasheet

Current PartRFQ

PM-U25-R

Panasonic Industrial Automation SalesIn Stock: 1165PM-U25-R Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the PM-U24-R is determined by alignment of the following critical parameters:

• Sensing method: Through-Beam operation
• Output configuration: NPN open collector topology
• Sensing distance tolerance: Optical sensors with sensing distances within the 5-6mm range maintain functional compatibility for slot-type detection applications
• Response time: 20µs specification maintained
• Operating temperature range: -25°C ~ 55°C compatibility
• Mounting configuration: Chassis mount compatibility
• Electrical ratings: Collector current and voltage breakdown specifications must support the application requirements
• Compliance standards: RoHS and ECCN classification alignment

The PM-U25-R qualifies as a substitute based on these parameters, with the primary distinction being an increased sensing distance of 0.236" (6mm) and modified output configuration from selectable Dark-ON/Light-ON to fixed NPN Open Collector operation.

Parameter Comparison

Engineering Selection Recommendations

The PM-U25-R is the designated substitute for the obsolete PM-U24-R. Selection of the PM-U25-R is supported by the following factors:

• Active product status ensures ongoing availability and supply chain continuity
• ROHS3 compliance exceeds the RoHS compliance of the original part, meeting current regulatory requirements
• Identical response time specification (20µs) maintains detection performance characteristics
• Matching operating temperature range (-25°C ~ 55°C) preserves thermal operating envelope
• Through-beam sensing method and NPN output topology provide functional equivalence for optical detection applications
• Chassis mount configuration maintains mechanical compatibility with existing installations

The primary design consideration is the increased sensing distance of 0.236" (6mm) compared to the original 0.197" (5mm). Applications requiring the exact 5mm sensing distance must evaluate whether the 6mm specification accommodates the mechanical slot geometry and detection requirements of the specific installation.

Frequently Asked Questions (FAQ)

Q: Can the PM-U25-R directly replace the PM-U24-R in existing installations?

A: The PM-U25-R provides functional substitution based on through-beam sensing method, NPN output topology, and identical response time. The primary consideration is the increased sensing distance from 5mm to 6mm. Mechanical compatibility depends on the slot width and detection geometry of the specific application. Electrical compatibility is maintained through matching operating temperature ranges and NPN output configuration.

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

A: The PM-U24-R operates at 0.197" (5mm) sensing distance, while the PM-U25-R operates at 0.236" (6mm). This 1mm difference affects the physical gap between the emitter and receiver elements. Applications with tightly constrained slot geometries must verify that the 6mm specification accommodates the mechanical design.

Q: How does the output configuration differ between these parts?

A: The PM-U24-R provides selectable Dark-ON/Light-ON operation, allowing configuration of the output state based on detection conditions. The PM-U25-R provides fixed NPN Open Collector operation. Applications requiring selectable output logic must implement external circuitry to achieve equivalent functionality with the PM-U25-R.

Q: Are there compliance differences between the PM-U24-R and PM-U25-R?

A: The PM-U24-R carries RoHS Compliant status, while the PM-U25-R carries ROHS3 Compliant status. ROHS3 represents current regulatory compliance standards. Both parts share identical ECCN (EAR99) and HTSUS (8543.70.9860) classifications.

Q: What is the product status significance?

A: The PM-U24-R is classified as obsolete, indicating discontinued manufacturing and limited availability. The PM-U25-R maintains active product status, ensuring ongoing supply chain availability and manufacturer support for new designs and system maintenance.