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RPI-579

RPI-579 Description

The RPI-579 from ROHM Semiconductor is a high-performance slot-type optical sensor with a phototransistor output, designed for precision sensing applications. This unamplified, transmissive optical switch features a compact PCB-mount design with a 5mm (0.197") sensing distance, making it ideal for detecting objects in tight spaces. With a fast response time of 10µs, it ensures rapid signal processing, while its 30V collector-emitter breakdown voltage and 30mA collector current rating provide robust performance in demanding environments. The device is RoHS3 compliant and REACH unaffected, meeting global environmental standards.

RPI-579 Features

• Phototransistor Output: Delivers reliable, noise-resistant signal detection.
• Fast Response (10µs): Enables high-speed object detection for automation and timing-critical applications.
• Compact Sensing (5mm): Optimized for narrow-gap applications where space is constrained.
• High Voltage Tolerance (30V): Suitable for industrial and automotive environments.
• RoHS3 & REACH Compliant: Ensures adherence to environmental regulations.
• Through-Hole Mounting: Facilitates secure PCB integration.
• Wide Operating Current (50mA max forward current): Supports versatile circuit designs.

RPI-579 Applications

The RPI-579 excels in:

• Position and Encoder Systems: Precise detection in rotary or linear encoders.
• Industrial Automation: Object sensing in conveyor belts, assembly lines, and robotic arms.
• Consumer Electronics: Paper detection in printers, paper feed mechanisms.
• Safety Interlocks: Non-contact sensing in machinery guards or door sensors.
• Automotive Systems: Gear position sensing or fluid level detection.

Conclusion of RPI-579

The RPI-579 stands out for its speed, durability, and compact form factor, making it a superior choice for high-precision optical sensing. Its unamplified phototransistor output ensures simplicity and reliability, while compliance with RoHS3 and REACH underscores its suitability for modern, eco-conscious designs. Though marked obsolete, its proven performance in industrial, automotive, and consumer applications ensures continued relevance in legacy systems and niche markets. Engineers seeking a cost-effective, high-performance optical switch will find the RPI-579 a dependable solution.