Description
CNY17-1 Optocoupler DIP-6 – Low CTR Phototransistor Opto-Isolator IC
The CNY17-1 Optocoupler is a reliable phototransistor output opto-isolator IC that integrates an infrared LED and a silicon phototransistor inside a compact DIP-6 through-hole package. Classified as a low-CTR variant within the CNY17 series, the CNY17-1 is ideal for applications that require controlled signal transfer, electrical isolation, and predictable performance. It effectively isolates low-voltage control circuits from high-voltage or noisy power sections, protecting sensitive electronics from voltage spikes, transients, and ground-loop interference. This optocoupler is commonly used in SMPS feedback loops, industrial automation, PLC input modules, relay driving circuits, and microcontroller signal isolation, where long-term stability and electrical safety are critical.
| Specification | Details |
|---|---|
| Part Number | CNY17-1 |
| Device Type | Optocoupler / Opto-Isolator IC |
| Output Type | Phototransistor |
| CTR Rank | CNY17-1 (Low 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
- SMPS feedback and regulation circuits
- Industrial automation and PLC inputs
- Relay driver and switching isolation
- Microcontroller signal isolation
- Noise suppression and ground-loop protection
- Sensor and control signal interfacing
How to Use
- Connect a current-limiting resistor in series with the input LED.
- Drive the LED from a logic or control signal.
- Use a pull-up resistor on the phototransistor output.
- Maintain sufficient PCB clearance for safe isolation.
- Do not exceed LED current or transistor voltage ratings.
Reviews
There are no reviews yet.