Datasheet for the MOC3041, an optoisolated triac driver with a zero-crossing detector, as a 171 KB PDF. It is used to switch a power triac from a low-voltage logic signal while keeping mains isolation, for example in heaters, lamps and solid-state relays. The document covers input LED trigger current, isolation voltage, pinout and typical snubber circuits. When repairing, confirm the LED drive current and inspect the external triac and gate resistor. Zero-crossing versions are not suited to phase-angle dimming.
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