Panasonic PM-R24 Optical Sensor - Equivalent & Substitute Parts

Part Overview

The Panasonic PM-R24 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 mounting with wire leads. The PM-R24 is classified as obsolete, making identification of compatible substitute parts essential for system maintenance and component procurement.

Substiute Parts

PM-R24

Panasonic Industrial Automation SalesIn Stock: 926PM-R24 Datasheet

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PM-R25

Panasonic Industrial Automation SalesIn Stock: 1526PM-R25 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

The PM-R25 qualifies as a substitute for the PM-R24 based on the following critical parameters:

Matching Parameters:

• Sensing Method: Through-Beam (both models)
• Mounting Type: Chassis Mount (both models)
• Package Type: Module with Wire Leads (both models)
• Response Time: 20µs (identical)
• Operating Temperature Range: -25°C ~ 55°C (identical)
• Output Configuration: NPN - Open Collector (compatible with NPN requirement)
• RoHS Compliance: Both compliant (PM-R24: RoHS Compliant; PM-R25: ROHS3 Compliant)
• Moisture Sensitivity Level: 1 (Unlimited) (both models)

Differing Parameters:

• Sensing Distance: PM-R24 uses 0.197" (5mm); PM-R25 uses 0.236" (6mm)
• Current - Collector (Ic) (Max): PM-R24 specifies 15 mA; PM-R25 specifies 15 mA supply current
• Voltage - Supply: PM-R25 specifies 5V ~ 24V operating range
• Product Status: PM-R24 is Obsolete; PM-R25 is Active

The PM-R25 maintains functional compatibility through identical sensing methodology, response characteristics, and environmental operating parameters. The increased sensing distance of the PM-R25 represents the primary technical distinction.

Parameter Comparison

Engineering Selection Recommendations

The PM-R25 is the designated substitute for the obsolete PM-R24. Both components maintain identical response time specifications (20µs) and operate across the same temperature range (-25°C ~ 55°C), ensuring functional equivalence in timing-critical applications.

The PM-R25 carries Active product status with ROHS3 compliance, providing superior long-term availability and regulatory alignment compared to the obsolete PM-R24. Both sensors maintain MSL Level 1 (Unlimited) moisture sensitivity classification, indicating equivalent environmental robustness.

The primary technical consideration is the increased sensing distance of the PM-R25 (0.236" / 6mm versus 0.197" / 5mm). This difference must be evaluated against specific application requirements. The PM-R25's NPN Open Collector output configuration is compatible with systems designed for the PM-R24's NPN Dark-ON/Light-ON selectable output.

Frequently Asked Questions (FAQ)

Q: Can the PM-R25 directly replace the PM-R24 in existing installations?

A: The PM-R25 is functionally compatible based on identical sensing methodology, response time, and operating temperature range. The primary consideration is the increased sensing distance (6mm versus 5mm). Applications requiring the exact 5mm sensing distance may require mechanical or optical adjustment.

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

A: The PM-R24 operates at 0.197" (5mm) sensing distance, while the PM-R25 operates at 0.236" (6mm). This difference affects the maximum gap between the sensor and the object being detected. Selection depends on the physical constraints and detection requirements of the specific application.

Q: Are there differences in output configuration between the PM-R24 and PM-R25?

A: The PM-R24 features selectable Dark-ON/Light-ON operation, while the PM-R25 provides NPN Open Collector output. Both are NPN-based configurations suitable for digital control circuits. The PM-R25 does not offer the selectable mode of the PM-R24.

Q: What is the inventory status for these parts?

A: The PM-R24 is obsolete with 906 units in stock. The PM-R25 is an active product with 1440 units available, providing superior long-term procurement reliability.

Q: Do both sensors meet current RoHS requirements?

A: The PM-R24 is RoHS Compliant, while the PM-R25 is ROHS3 Compliant. Both meet regulatory requirements for their respective product lifecycles. The PM-R25's ROHS3 compliance ensures alignment with current environmental standards.

Q: Are the mounting and packaging specifications compatible?

A: Both sensors feature Chassis Mount configuration with Module, Wire Leads packaging. The PM-R24 specifies Slot Type packaging, while the PM-R25 provides standard Module packaging. Physical mounting compatibility should be verified for the specific application.