CT3083 (MOC3083) Zero-Cross Triac Driver Optocoupler, 6-Pin SMD
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Prices updated: 13 Oct 2026
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About this product
The CT3083, listed alongside the MOC3083 designation, is a zero-crossing triac driver optocoupler in a 6-pin SMD package. An internal LED optically triggers the triac driver output, isolating a low-voltage microcontroller from the AC circuit it controls. It is used to switch a triac for AC loads, with triggering timed near the voltage zero-crossing to reduce electrical noise.
Specifications
- Output mode
- Zero-crossing triac driver / مُشغِّل ترياك عند تقاطع الصفر
- LED forward voltage
- 1.3 V / 1.3 فولت
- LED trigger current
- 60 mA
- Max TRIAC output voltage
- 800 V
- TRIAC peak output current
- 1 A
- Package
- 6-pin SMD / SMD بـ 6 أطراف
Frequently asked questions
Can this optocoupler switch mains AC directly?
No. It is a triac driver, so it drives the gate of an external triac, and the triac switches the AC load. Follow the datasheet for the gate and snubber components.
How should I drive the LED side from a microcontroller?
Use a series resistor on the LED side, sized from the supply voltage, the 1.3 V LED forward voltage and the LED current chosen from the datasheet. Keep the LED current within the limits given there.
