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CNY70
CNY70 is popular reflective optoelectronic sensor produced by Vishay. It integrates IR LED emitter and silicon phototransistor inside one compact 7×7×6 mm through‑hole housing. Emitter and detector face toward same direction, detects objects by receiving reflected infrared light, independent of mechanical contact.
Internal daylight‑blocking filter suppresses visible‑light interference, improves stability under ambient light condition. Peak emission wavelength is 950 nm. Maximum signal output occurs around 0.5 mm distance; valid working range covers 0‑5 mmVishay Int....
Absolute ratings: LED forward current max 50 mA; collector‑emitter voltage 32V; collector current max 50 mA; total power dissipation 200 mW. Operating temperature range ‑40℃ ~ +85℃.
Pinout: Pin1 LED Anode, Pin2 LED Cathode, Pin3 Phototransistor Emitter, Pin4 Phototransistor Collector. LED side needs external current‑limiting resistor; phototransistor output requires pull‑up resistor for signal reading.
Typical applications: rotary encoder code‑disk scanning, paper/mark detection, object proximity sensing, position counting, DIY optical‑switch projects. Sensing performance is affected by target surface color and reflectivity, calibration is recommended for stable detection threshold.
1. Reflective Photo‑Sensor Integrated Optocoupler CNY70 is a reflective optical sensor manufactured by Vishay. It integrates an infrared light‑emitting diode and an NPN silicon phototransistor inside one plastic DIP‑4 package. The infrared light emits outward and reflects off target object surface, phototransistor receives reflected light to generate corresponding electrical signal, realizing non‑contact reflective detection without mechanical contact.
2. Compact Integrated DIP‑4 Through‑hole Package Infrared LED and phototransistor are arranged side‑by‑side inside the package. No extra optical lens required for general application. Standard DIP‑4 through‑hole package, easy for PCB soldering and assembly. Compact size saves board layout space for automation equipment and embedded modules.
3. Reliable Electrical Parameters & Wide Operating Temperature LED forward current maximum 50mA; phototransistor collector‑emitter voltage Vceo up to 70V. Operating temperature range from ‑25℃ to +85℃, suitable for indoor industrial and consumer electronic environments. Output signal changes according to object reflectivity and detection distance, widely used for mark counting and position feedback.
4. Simple Peripheral Circuit & Easy MCU Interface LED side needs current‑limiting resistor; phototransistor output can connect pull‑up resistor to obtain switching signal, directly read by microcontroller IO port. Detect object presence, surface marks and edge position, suitable for pulse counting and limit trigger scenarios.
5. Mature General‑purpose Optical Sensing Component Mass‑produced classic reflective opto‑sensor, widely used for new project design, prototype verification and BOM replacement. RoHS compliant, abundant global stock for industrial equipment, office equipment and educational development projects.
Item | Specifications |
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Part Number | CNY70 |
Product Series | Reflective Optical Sensor Optocoupler |
Manufacturer | Vishay |
Internal Structure | Infrared LED + NPN Phototransistor |
Package | DIP‑4 4‑Lead Through‑Hole |
LED Forward Current | 50mA Max |
Phototransistor Vceo | 70V |
Detection Mode | Reflective non‑contact optical sensing |
Operating Temperature | ‑25℃ ~ +85℃ |
Mounting Style | Through Hole |
Pin Definition | Pin1:LED Anode; Pin2:LED Cathode; Pin3:Phototransistor Emitter; Pin4:Phototransistor Collector |
Compliance | RoHS Compliant |
Core Advantages | Integrated reflective optical sensor, non‑contact detection, compact DIP‑4 package, simple peripheral circuit, stable signal output, low‑cost general‑purpose optical detection |
Application Grade | Mark & Edge Detection, Paper / Object Presence Sensing, Rotary Encoder Auxiliary Unit, Industrial Automation Trigger, Office Equipment Sensor, Educational Development Platforms, BOM Replacement & Equipment Refurbishment |
1. Mark & Edge Detection for Automation Equipment Detect black‑white mark, workpiece edge position on production line, provide trigger signal for counting and positioning system.
2. Paper & Object Presence Sensing Paper feed detection for printers and copiers, detect object existence and proximity in small‑size automation machinery.
3. Pulse Counting & Rotary Encoder Auxiliary Module Cooperate with code disc for pulse counting, speed‑feedback signal acquisition for low‑speed rotating mechanism.
4. Industrial Automation Non‑contact Trigger Circuit Optical proximity trigger instead of mechanical switch, reduce mechanical wear and improve equipment service life.
5. Prototype Development & Legacy‑equipment Repair Replacement Common optical sensor for experimental development, standard replacement component for old office and industrial sensing equipment maintenance, convenient for BOM material matching。
