

ROHM Semiconductor
RPI-125
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RPI-125 Description
RPI-125 Description
The RPI-125 is a high-performance optical switch designed and manufactured by ROHM Semiconductor. This transmissive, phototransistor output sensor boasts a rapid response time of 10µs, making it ideal for applications requiring quick and precise detection. With a sensing distance of 0.047" (1.2mm), the RPI-125 offers reliable detection in close-range applications. The device is unamplified, ensuring accurate signal transmission without distortion. The RPI-125 is packaged in a slotted module, making it easy to integrate into various systems.
RPI-125 Features
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Technical Specifications:
- Response Time: 10µs
- Sensing Distance: 0.047" (1.2mm)
- Current - Collector (Ic) (Max): 30 mA
- Voltage - Collector Emitter Breakdown (Max): 30 V
- Current - DC Forward (If) (Max): 50 mA
- Moisture Sensitivity Level (MSL): 1 (Unlimited)
- Output Configuration: Phototransistor
- Mounting Type: Through Hole
- Package / Case: Slotted Module
- Package: Bulk
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Regulatory Compliance:
- ECCN: EAR99
- REACH Status: REACH Unaffected
- RoHS Status: ROHS3 Compliant
- HTSUS: 8541.49.8000
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Unique Features and Advantages:
- Fast response time for quick detection
- Compact sensing distance for close-range applications
- Unamplified signal transmission for accurate detection
- Slotted module packaging for easy integration
RPI-125 Applications
The RPI-125 is ideal for a wide range of applications where precise and rapid detection is required. Some specific use cases include:
- Industrial Automation: The RPI-125's fast response time and reliable detection make it suitable for robotic guidance, object detection, and safety systems in industrial environments.
- Automotive: The sensor can be used for proximity sensing, parking assistance, and obstacle detection in automotive applications.
- Consumer Electronics: The RPI-125 can be employed in devices such as smart home systems, gaming consoles, and wearable technology for gesture recognition and user interaction.
- Medical Equipment: The sensor can be used for non-contact patient monitoring, vital sign detection, and medical device control in healthcare settings.
Conclusion of RPI-125
The RPI-125 is a versatile and high-performance optical switch that offers rapid response times, reliable detection, and easy integration. Its unique features and advantages make it an ideal choice for various applications in industrial automation, automotive, consumer electronics, and medical equipment. With its compliance with regulatory standards and robust performance, the RPI-125 is a reliable solution for precise and accurate detection in a wide range of environments.



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