PM-F24P Equivalent & Substitute Parts

Part Overview

The PM-F24P is an optical sensor manufactured by Panasonic Industrial Automation Sales, designed as a through-beam slot-type module with selectable dark-ON/light-ON output configuration. This sensor operates with PNP output and is classified as an unamplified optical sensor for industrial applications. The product is currently obsolete, making identification of compatible substitute parts essential for system maintenance and component replacement in existing installations.

Substiute Parts

PM-F24P

Panasonic Industrial Automation SalesIn Stock: 1241PM-F24P Datasheet

Current PartRFQ

PM-F25-P

Panasonic Industrial Automation SalesIn Stock: 1376PM-F25-P Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PM-F24P is determined by the following critical parameters that must remain compatible:

Mandatory Compatibility Parameters:

• Sensing method: Through-beam optical detection
• Output type: PNP configuration
• Mounting type: Chassis mount
• Package format: Module with wire leads
• Response time: 20µs (matching performance requirement)
• Operating temperature range: -25°C ~ 55°C
• Collector current rating: 15 mA maximum
• RoHS compliance status

Allowable Variation Parameters:

• Sensing distance: The PM-F24P operates at 0.197" (5mm). Substitute parts may operate at different sensing distances provided the application permits this variation.
• Output selectability: The PM-F24P features selectable dark-ON/light-ON output. Substitute parts with fixed output configuration (such as open collector) are acceptable if the application circuit accommodates the fixed output state.
• Supply voltage specifications: Substitute parts may have different supply voltage ranges if the application power supply is compatible.

The PM-F25-P qualifies as a substitute based on these parameters, with the understanding that its 0.236" (6mm) sensing distance and fixed PNP open collector output represent functional variations that must be evaluated against specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

The PM-F25-P is the designated substitute for the obsolete PM-F24P based on product lineage within the Panasonic PM series and functional compatibility in through-beam optical sensing applications.

Selection Basis:

The PM-F25-P maintains active product status, ensuring ongoing availability and supply chain continuity. Both parts comply with RoHS standards, with the PM-F25-P meeting the more recent ROHS3 specification. Both sensors share identical response time performance (20µs) and operating temperature range (-25°C ~ 55°C), supporting equivalent system performance in industrial environments.

Key Differences Requiring Application Evaluation:

The sensing distance increases from 0.197" (5mm) on the PM-F24P to 0.236" (6mm) on the PM-F25-P. Applications with fixed slot widths or precise gap requirements must confirm this dimensional change is compatible with the mechanical installation.

The PM-F24P provides selectable dark-ON/light-ON output configuration, while the PM-F25-P operates with fixed PNP open collector output. Applications currently utilizing the selectable output feature must verify that the fixed output state aligns with existing circuit logic and control requirements.

Frequently Asked Questions (FAQ)

Q: Can the PM-F25-P directly replace the PM-F24P without circuit modifications?

A: Direct replacement is possible if the application accommodates the 0.236" (6mm) sensing distance and operates with fixed PNP open collector output. If the original design requires the selectable dark-ON/light-ON feature or depends on the 0.197" (5mm) sensing distance, circuit or mechanical modifications may be necessary.

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

A: The PM-F24P operates at 0.197" (5mm) while the PM-F25-P operates at 0.236" (6mm). This difference affects the physical gap between the emitter and receiver in the slot-type configuration. Applications with fixed slot widths must verify compatibility with the larger sensing distance.

Q: Are both parts suitable for the same operating temperature range?

A: Yes. Both the PM-F24P and PM-F25-P operate across the identical temperature range of -25°C ~ 55°C, supporting equivalent thermal performance in industrial applications.

Q: What is the difference between the selectable output on the PM-F24P and the fixed output on the PM-F25-P?

A: The PM-F24P allows field selection between dark-ON and light-ON output modes, providing flexibility in system configuration. The PM-F25-P provides fixed PNP open collector output without selectability. The application circuit must be compatible with the fixed output state of the PM-F25-P.

Q: Why is the PM-F24P classified as obsolete?

A: The PM-F24P is part of the older PM-24 series. The PM-F25-P, from the active PM-25 series, represents the current product offering from Panasonic for this sensor category. Obsolete classification indicates the part is no longer in active production, making the PM-F25-P the recommended alternative for new designs and replacements.

Q: Are there any compliance differences between the two parts?

A: Both parts are RoHS compliant. The PM-F25-P meets the more recent ROHS3 specification, while the PM-F24P meets the earlier RoHS standard. Both maintain MSL 1 (Unlimited) moisture sensitivity rating, indicating equivalent handling and storage requirements.