RPI-392 Equivalent & Substitute Parts

Part Overview

The RPI-392 is an optical sensor slot transistor module manufactured by Rohm Semiconductor, designed for 0.157" (4mm) sensing distance applications. This component features a transistor output configuration with through-hole mounting and PC pin packaging. The product is currently obsolete, making identification of compatible substitute parts essential for ongoing system support and new design implementations. The RPI-392 operates across an industrial temperature range of -25°C to 85°C and is ROHS3 compliant.

Substiute Parts

RPI-392

Rohm SemiconductorIn Stock: 3884RPI-392 Datasheet

Current PartRFQ

RPI-441C1

Rohm SemiconductorIn Stock: 181784RPI-441C1 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RPI-392 are identified based on electrical and mechanical parameter compatibility within the optical sensor category. The primary substitution criteria are:

• Sensing distance of 0.157" (4mm)
• Maximum collector current (Ic) of 30 mA
• Maximum collector-emitter breakdown voltage of 30 V
• Response time of 10µs
• Operating temperature range of -25°C to 85°C
• Through-hole mounting capability
• Unamplified sensor type
• ROHS3 compliance and equivalent regulatory status

The RPI-441C1 qualifies as a direct substitute based on these parameters. While the RPI-441C1 features PCB mount packaging and phototransistor output configuration (compared to the slot type module and transistor output of the RPI-392), all critical electrical specifications and environmental ratings remain identical, enabling functional equivalence in applications requiring the specified sensing distance and electrical performance.

Parameter Comparison

Engineering Selection Recommendations

The RPI-441C1 is the manufacturer-recommended substitute for the obsolete RPI-392. Both components maintain identical electrical performance specifications, including collector current limits, breakdown voltage, and response time characteristics. The RPI-441C1 carries active product status with ROHS3 compliance and equivalent regulatory certifications (REACH Unaffected, ECCN EAR99, HTSUS 8541.49.8000), ensuring continued availability and regulatory alignment for new designs and legacy system support.

The primary design consideration is the packaging transition from slot-type module with PC pins to PCB mount configuration. This change requires mechanical redesign of the mounting interface but does not affect electrical circuit performance or signal characteristics.

Frequently Asked Questions (FAQ)

Q: Can the RPI-441C1 directly replace the RPI-392 without circuit modifications?

A: The RPI-441C1 provides electrical equivalence with identical current, voltage, and response time specifications. However, the packaging change from slot-type module to PCB mount requires mechanical redesign of the mounting interface and PCB layout. Circuit-level modifications are not necessary if the mounting interface is properly adapted.

Q: What is the primary difference between the RPI-392 and RPI-441C1?

A: The RPI-392 uses slot-type module packaging with PC pins, while the RPI-441C1 uses PCB mount packaging. Additionally, the RPI-392 features transistor output configuration, whereas the RPI-441C1 features phototransistor output. All electrical performance parameters remain identical.

Q: Is the RPI-441C1 suitable for applications requiring 0.157" (4mm) sensing distance?

A: Yes. The RPI-441C1 maintains the 0.157" (4mm) sensing distance specification identical to the RPI-392, with equivalent response time and electrical performance across the full operating temperature range.

Q: What compliance certifications apply to the RPI-441C1?

A: The RPI-441C1 is ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99 with HTSUS code 8541.49.8000, matching the regulatory status of the RPI-392.

Q: Why is the RPI-392 listed as obsolete?

A: The RPI-392 has been discontinued by Rohm Semiconductor. The RPI-441C1 represents the active product line continuation with equivalent electrical specifications and improved packaging for modern PCB assembly processes.