Panasonic PM-L24 Optical Sensor Equivalent & Substitute Parts

Part Overview

The Panasonic PM-L24 is an optical through-beam sensor 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-L24 operates at a 0.197" (5mm) sensing distance and is designed for slot-type mounting applications requiring unamplified optical detection.

Substiute Parts

PM-L24

Panasonic Industrial Automation SalesIn Stock: 1052PM-L24 Datasheet

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PM-L25

Panasonic Industrial Automation SalesIn Stock: 8428PM-L25 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

The PM-L25 qualifies as a substitute for the PM-L24 based on the following critical parameters:

Matching Parameters:

• Sensing method: Through-Beam
• Output configuration: NPN - Open Collector (compatible with NPN applications)
• Response time: 20µs (identical)
• Operating temperature range: -25°C ~ 55°C (identical)
• Mounting type: Chassis Mount
• Package type: Module, Wire Leads
• RoHS compliance: Both compliant (PM-L24: RoHS, PM-L25: ROHS3)

Variance Parameters:

• Sensing distance: PM-L25 operates at 0.236" (6mm) versus PM-L24 at 0.197" (5mm)
• Current - Supply: PM-L25 specifies 15 mA supply current
• Voltage - Supply: PM-L25 requires 5V ~ 24V supply range
• Product status: PM-L25 is Active (versus PM-L24 Obsolete)

The PM-L25 maintains functional compatibility through identical response time, temperature range, and through-beam sensing methodology. The increased sensing distance of the PM-L25 represents the primary design consideration for substitution.

Parameter Comparison

Engineering Selection Recommendations

The PM-L25 is the designated substitute for the obsolete PM-L24 based on product lifecycle status and regulatory compliance. The PM-L25 maintains active manufacturing status and ROHS3 compliance, ensuring long-term availability and regulatory alignment for new designs and system replacements.

The primary design consideration for substitution is the sensing distance differential: the PM-L25 operates at 0.236" (6mm) compared to the PM-L24 at 0.197" (5mm). This 0.039" (1mm) increase in sensing distance must be evaluated against specific application slot geometry and object detection requirements.

Both components share identical response time (20µs) and operating temperature range (-25°C ~ 55°C), supporting functional equivalence in timing-critical and temperature-variable environments. The NPN output configuration remains consistent across both parts, maintaining circuit-level compatibility.

Frequently Asked Questions (FAQ)

Q: Can the PM-L25 directly replace the PM-L24 in existing applications?

A: The PM-L25 provides functional substitution with one critical design consideration: the sensing distance increases from 0.197" (5mm) to 0.236" (6mm). Applications with tight slot geometry or specific object positioning requirements must verify that the increased sensing distance does not compromise detection performance.

Q: What are the key electrical compatibility factors?

A: Both the PM-L24 and PM-L25 feature NPN output configuration with identical 20µs response time. The PM-L25 specifies a 15 mA supply current requirement and operates across a 5V ~ 24V supply voltage range. Existing circuit designs supporting these electrical parameters will function with the PM-L25.

Q: How do the package types differ?

A: The PM-L24 is specified as Module, Wire Leads, Slot Type. The PM-L25 is specified as Module, Wire Leads without explicit slot type designation. Physical mounting compatibility must be verified against specific chassis mount applications.

Q: What is the significance of the product status difference?

A: The PM-L24 is classified as obsolete, while the PM-L25 maintains active manufacturing status. This status difference ensures continued availability, supply chain stability, and regulatory compliance for the PM-L25 in new designs and long-term system support.

Q: Are both components RoHS compliant?

A: Yes. The PM-L24 is RoHS Compliant, and the PM-L25 is ROHS3 Compliant. Both meet current environmental and hazardous substance restriction requirements for industrial applications.