CNY65B Photo transistor Output Optocoupler IC

CNY65B Photo transistor Output Optocoupler IC 

The CNY65B is a high-isolation phototransistor-based optocoupler designed for applications requiring safe electrical isolation between input and output circuits. It contains an infrared LED and a silicon NPN phototransistor, housed in a long creepage-distance plastic package, ideal for industrial and high-voltage environments.

The “B” grade indicates a moderate CTR (Current Transfer Ratio) range suitable for reliable switching and signal monitoring applications.

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Key Features:

• Input type: Infrared emitting diode (GaAs IR LED)
• Output type: Phototransistor
• Isolation voltage: Up to 7500 VRMS
• CTR (Current Transfer Ratio): Typically 50% – 400%
• Package: 4-pin DIP (plastic, through-hole)
• Wide operating temperature range: –55°C to +100°C
• Standards compliance: VDE, UL, CSA approvals for safety and isolation

Applications:

• Safe signal transmission in high-voltage circuits
• Switching power supplies and SMPS feedback circuits
• Microcontroller and PLC input/output isolation
• Industrial control systems
• Measurement and signal conditioning
• Mains-powered equipment isolation