RPI-122 Equivalent & Substitute Parts

Part Overview

The RPI-122 is an optical sensor manufactured by Rohm Semiconductor, classified as a through-beam phototransistor with PCB mount configuration. This unamplified optical sensor is designed for slot-type detection applications with a sensing distance of 0.031" (0.8mm). The part maintains Active product status and is RoHS3 compliant, making it suitable for current industrial and consumer applications requiring optical sensing functionality.

Substitute parts are identified when equivalent sensing methods, output configurations, and mechanical compatibility are maintained within acceptable parameter tolerances for the application category.

Substiute Parts

RPI-122

Rohm SemiconductorIn Stock: 55790RPI-122 Datasheet

Current PartRFQ

GP1S196HCZ0F

SHARP/Socle TechnologyIn Stock: 65430GP1S196HCZ0F Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RPI-122 are identified based on the following criteria:

• Identical sensing method: Through-Beam optical detection
• Identical output configuration: Phototransistor
• Identical mounting type: Through Hole PCB Mount
• Identical package classification: PCB Mount
• Identical sensor type: Unamplified
• Compatible operating temperature range: -25°C ~ 85°C
• Compliance alignment: RoHS3 Compliant

The GP1S196HCZ0F from SHARP/Socle Technology meets these substitution criteria. Variations in sensing distance (0.043" vs 0.031"), current ratings, voltage ratings, and response time represent parameter differences that must be evaluated within specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

Both the RPI-122 and GP1S196HCZ0F maintain Active product status and ROHS3 compliance, confirming ongoing manufacturability and regulatory alignment. Selection between these parts depends on application-specific requirements regarding sensing distance, current handling capacity, and response time characteristics.

The RPI-122 provides higher current ratings (If: 50 mA, Ic: 30 mA) and faster response time (10µs), suitable for applications requiring rapid detection cycles and higher drive capability. The GP1S196HCZ0F offers extended sensing distance (0.043" vs 0.031") and higher voltage breakdown rating (35 V vs 30 V), applicable to applications with greater slot width tolerance or elevated voltage environments.

Both parts share identical operating temperature range, mounting methodology, and sensor classification, ensuring mechanical and thermal compatibility within the specified range of -25°C to 85°C.

Frequently Asked Questions (FAQ)

Q: Can the GP1S196HCZ0F directly replace the RPI-122 in all applications?

A: Direct substitution is possible only when the application tolerates the parameter differences: increased sensing distance (0.043" vs 0.031"), reduced current capacity (If: 30 mA vs 50 mA, Ic: 20 mA vs 30 mA), and slower response time (50µs vs 10µs). The higher voltage rating (35 V vs 30 V) provides additional margin in voltage-constrained designs.

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

A: Sensing distance defines the maximum gap between the emitter and receiver in through-beam configuration. The RPI-122 operates at 0.031" (0.8mm), while the GP1S196HCZ0F operates at 0.043" (1.1mm). Applications with slot widths exceeding 0.8mm require the GP1S196HCZ0F; tighter slot tolerances may require the RPI-122.

Q: How do response time differences affect application performance?

A: Response time indicates the sensor's detection speed. The RPI-122 responds in 10µs, while the GP1S196HCZ0F responds in 50µs. Applications requiring detection of rapidly moving objects or high-frequency switching demand the faster RPI-122 response characteristic.

Q: Are packaging differences between Bulk and Tube significant for component selection?

A: Packaging format (Bulk for RPI-122, Tube for GP1S196HCZ0F) affects supply chain logistics and handling but does not impact electrical or mechanical compatibility. Both maintain identical PCB Mount package classification and Through Hole mounting type.

Q: Do both parts meet current regulatory compliance requirements?

A: Both the RPI-122 and GP1S196HCZ0F are RoHS3 compliant and maintain Active product status, confirming compliance with current environmental regulations and ongoing manufacturer support.