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S042P is a 14-pin DIP (dual in-line package) optocoupler from Siemens. It is an optically isolated triac driver with a zero-crossing detector. Description: The S042P is an optically isolated triac driver with a zero-crossing detector. It is designed to provide a high level of electrical isolation between the input and output circuits. The device features an integrated zero-crossing detector, which ensures that the triac is triggered at the correct time in the AC cycle. Features: Optically isolated triac driver Zero-crossing detector High level of electrical isolation 14-pin DIP package Applications: The S042P is commonly used in applications such as motor control, lighting control, and power control. It is also used in industrial and home automation systems. (For reference only)