The CNY17F-3-V is a single-channel phototransistor optocoupler manufactured by Everlight Electronics. It consists of an infrared emitting diode (IRED) optically coupled to a phototransistor. The input signal applied to the IRED causes it to emit infrared light, which activates the phototransistor, creating an electrical connection between the input and output circuits while maintaining electrical isolation.

Applications

• Microcontroller Input/Output Isolation
• Power Supply Feedback Control
• Digital Logic Isolation
• Noise Isolation in Sensitive Circuits
• Industrial Control Systems
• Replacing Relays

Features

• High Isolation Voltage: 5000 Vrms
• CTR (Current Transfer Ratio): 50 - 600%
• Low Input Current: IF = 1 mA
• High Collector-Emitter Voltage: 70V
• Operating Temperature: -55°C to +100°C
• DIP-6 Package

Benefits

• Electrical Isolation: Provides high-voltage electrical isolation between input and output circuits, protecting sensitive components from voltage spikes and surges.
• Noise Immunity: Reduces noise coupling between circuits, improving signal integrity.
• Signal Compatibility: Allows interfacing between circuits with different voltage levels or grounding schemes.
• Compact Size: The DIP-6 package allows for space-saving PCB designs.
• Long Life: Solid-state construction provides long-term reliability.

Additional Details

The CNY17F-3-V optocoupler is a versatile component used in a wide range of applications where electrical isolation is required. The current transfer ratio (CTR) indicates the efficiency of the optical coupling. A higher CTR means that a smaller input current is required to achieve a given output current. The isolation voltage specifies the maximum voltage that the optocoupler can withstand between the input and output. The datasheet provides detailed information on application circuits, performance characteristics, and package dimensions. A pull-up resistor is typically required on the collector of the phototransistor to provide a defined output voltage level.