Description
CNY17-2 Optocoupler DIP-6 – Reliable Phototransistor Opto-Isolator IC
The CNY17-2 Optocoupler is a phototransistor output opto-isolator IC that combines an infrared LED and a silicon phototransistor inside a compact DIP-6 through-hole package. It provides effective electrical isolation between low-voltage control electronics and high-voltage or noisy power circuits, protecting sensitive components from voltage spikes, transients, and ground-loop interference. The CNY17-2 is widely used in industrial control systems, SMPS feedback circuits, relay drivers, PLC input modules, and microcontroller signal isolation where stable current transfer and long-term reliability are required.
| Specification | Details |
|---|---|
| Part Number | CNY17-2 |
| Device Type | Optocoupler / Opto-Isolator IC |
| Output Type | Phototransistor |
| CTR Rank | CNY17-2 (Moderate CTR Range) |
| Isolation Voltage | Up to 5000Vrms |
| Collector-Emitter Voltage | 70V Max |
| Input LED Forward Voltage | 1.2V Typical |
| Package Type | DIP-6 Through-Hole |
Applications
- Microcontroller and logic signal isolation
- Industrial automation and PLC input circuits
- SMPS feedback and regulation circuits
- Relay driving and switching isolation
- Noise and ground-loop protection
- Sensor and control signal isolation
How to Use
- Connect a current-limiting resistor in series with the input LED.
- Drive the LED from a logic signal or control circuit.
- Use a pull-up resistor on the phototransistor output.
- Maintain adequate PCB spacing for isolation safety.
- Do not exceed LED current or transistor voltage ratings.
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