The part is ROHS3 compliant.
4170 Vrms isolation and 50% CTR floor
Rated for 4170 Vrms isolation, this optocoupler suits safety-barrier designs where galvanic separation between a DC control signal and a 30 V max output rail is required. The 50% minimum current transfer ratio at 10 mA forward current sets the guaranteed drive margin for the receiving transistor — design the load-side pull-up resistor around this floor, not the typical value. Typical turn-on and turn-off times are 2 µs each, which is adequate for low-frequency switching, PLC input isolation, and relay coil drive where sub-microsecond response is not critical.
Through-hole 6-DIP with base pin access
The 6-DIP (0.300-inch, 7.62 mm) package with through-hole mounting is a standard footprint that matches legacy socket or wave-solder layouts. The transistor-with-base output gives the designer access to the base pin for biasing or Miller-clamp feedback — a feature not available on simpler phototransistor optos.
Typical forward voltage and drive current limits
Forward voltage is 1.18 V typical at 10 mA, and the maximum DC forward current is 60 mA. The output transistor saturates at 400 mV max — budget this drop in the low-side voltage when driving a logic input or relay coil.