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MOC3022 IC Triac OptoIsolator IC
The MOC3022 is a non–zero-cross (random phase) triac driver optoisolator designed to safely interface low-voltage control circuits (like Arduino, microcontrollers, logic ICs, PLCs) with high-voltage AC loads.
It contains an infrared LED optically coupled to a phototriac output, which triggers an external power triac.
Since the MOC3022 does not include zero-cross switching, it can trigger the triac at any point in the AC waveform, making it ideal for light dimming, motor speed control, heater regulation, and phase-angle controlled AC loads.
Compared to MOC3020 and MOC3021, the MOC3022 offers higher sensitivity, requiring less LED current to activate the output—useful for low-power microcontroller pins.
Features:-
- Excellent IFT stability—IR emitting diode has low degradation
- High isolation voltage—minimum 5300 VAC RMS
- Underwriters Laboratory (UL) recognized—File #E90700
- Peak blocking voltage: 400V-MOC3022
- VDE recognized (File #94766)
Specification:-
| Symbol | Parameter | Value | Unit |
| IF | Forward current | 60 | mA |
| PD | Power dissipation | 100 | mW |
| VR | Reverse Voltage | 3 | V |
| Tstg | Storage temperature range | -40 to +150 | °C |
| TOPR | Operating Temperature | -40 to +85 | °C |
| TSOL | Lead Solder Temperature | 260 for 10 sec | °C |
| ITSM | Peak Repetitive Surge Current (PW = 1 ms, 120 pps) | 1 | A |
| VDRM | Off-State Output Terminal Voltage | 250 | V |
| VISO | Isolation Surge Voltage | 7500 | Vac(pk) |
Applications
- Light dimmers (LED, incandescent, halogen)
- AC motor speed control (fans, small motors)
- Heater and oven temperature control
- Phase-angle power regulators
- Triggering external triacs/thyristors
- Solid-State Relay (SSR) circuits
- Home automation AC appliance switching
- Industrial automation and AC load control
- Variable AC power supplies
- AC-driven pumps, compressors, and tools
- AC load control in smart devices
*Product image for illustration purposes only, actual product may vary.
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