🔹 2pcs MOC3021 Optoisolator Triac Driver IC – DIP-6 Package
This pack contains two MOC3021 optoisolators, consisting of a GaAs infrared LED optically coupled to a silicon bilateral switch (triac driver). Designed for interfacing low-voltage DC control circuits (like microcontrollers) with high-voltage AC loads, it provides safe isolation and random-phase control of triacs and solid-state relays.
✅ Specifications:
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IC Part Number: MOC3021
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Function: Optoisolator / Optocoupler with Triac Driver Output
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Package: 6-pin DIP (Dual In-line Package)
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Input Type: GaAs Infrared LED
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Output Type: Bilateral Switch (Triac Driver)
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Peak Off-State Voltage: 400V
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LED Forward Voltage: 1.15V – 1.5V (typical)
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LED Trigger Current (IFT): 15mA (max)
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Isolation Voltage: 5300V RMS (typical)
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Operating Temperature: -40°C to +100°C
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Zero-Crossing: No (Random-Phase / Non-Zero-Crossing)
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Quantity: 2 Pieces
🔧 Features:
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Random-phase turn-on (for phase control applications)
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High electrical isolation between input and output
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Compatible with TTL and CMOS logic
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RoHS compliant (typical)
📦 Applications:
✔️ AC motor speed controllers (with external triac)
✔️ Light dimmers and lamp ballasts
✔️ Solid-state relay (SSR) drivers
✔️ Industrial process controls
✔️ Home automation (AC load switching)
✔️ Arduino and microcontroller AC load control
✔️ Isolated power switching circuits
✔️ Phase control and power regulation
⚠️ Important Note:
MOC3021 is a driver for an external triac. It does not handle high currents directly. Requires an external TRIAC (e.g., BT136, BT139) for switching AC loads.

















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