Description
MOC8104 High CTR Optocoupler DIP – Phototransistor Output Isolation IC
The MOC8104 optocoupler is a high current transfer ratio (CTR) opto-isolator designed for safe signal isolation between low-voltage logic circuits and high-voltage or noisy power sections. It integrates an infrared LED and a phototransistor output in a compact DIP package, providing reliable electrical isolation and strong output drive capability. Compared to standard optocouplers, the MOC8104 offers higher CTR, making it suitable for precision control, SMPS feedback, and industrial automation systems.
| Specification | Details |
|---|---|
| Part Number | MOC8104 |
| Device Type | Optocoupler / Opto-Isolator |
| Output Type | Phototransistor Output |
| Current Transfer Ratio (CTR) | High CTR (Typically higher than MOC8103) |
| Isolation Voltage | Up to 5000Vrms (typical) |
| Collector-Emitter Voltage | 30V |
| Input Forward Current | 10mA nominal |
| Package | DIP-6 Through-Hole |
Applications
- SMPS feedback and regulation circuits
- PLC and microcontroller input isolation
- Industrial automation and control systems
- Relay driving and signal isolation
- Noise suppression between power and logic sections
How to Use
- Drive the internal IR LED using a suitable current-limiting resistor.
- Connect the phototransistor side to the isolated output or control circuit.
- Ensure required PCB clearance for maintaining isolation voltage.
- Use pull-up resistors on the output side if operating as a digital signal.
- Test CTR performance under actual load conditions for precise applications.
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