Description
MOC8103 Optocoupler DIP – Phototransistor Output Isolation IC
The MOC8103 optocoupler is a reliable opto-isolation IC designed to electrically isolate low-voltage control circuits from high-voltage or noisy power sections. It integrates an infrared LED and a phototransistor in a single DIP package, ensuring effective signal transfer without direct electrical connection. The MOC8103 is widely used in SMPS, industrial controllers, relay driving circuits, and microcontroller-based applications where noise immunity and user safety are critical.
| Specification | Details |
|---|---|
| Part Number | MOC8103 |
| Device Type | Optocoupler / Opto-Isolator |
| Output Type | Phototransistor |
| Isolation Voltage | Up to 5000Vrms (typical) |
| Collector-Emitter Voltage | 30V |
| Forward Current | 10mA nominal |
| Package | DIP-6 Through-Hole |
Applications
- SMPS feedback and isolation circuits
- Microcontroller and PLC input isolation
- Relay and TRIAC driving circuits
- Industrial control and automation systems
- Noise-sensitive signal coupling
How to Use
- Connect the input LED pins with a current-limiting resistor from the control signal.
- Ensure correct polarity when driving the internal IR LED.
- Use the phototransistor output side for high-voltage or noisy sections.
- Maintain adequate PCB spacing for maximum isolation performance.
- Verify output logic levels before connecting sensitive ICs.
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