CNY171 [Onsemi]

These optocouplers feature a Gallium Arsenide IRED and an NPN phototransistor in a dual in-line package. They are UL and VDE recognized, offer closely matched current transfer ratio (CTR) to minimize unit-to-unit variation, and have very low coupled capacitance. The white package (-M suffix) has a base connection to pin 6, while the black package does not. They are suitable for noise-sensitive applications.