What the 1000% CTR means for your load drive
The Darlington output with base access gives you the option to add a base resistor or a speed-up capacitor to tailor the switching response, though the typical turn-off time of 100 µs is inherently slow compared to a phototransistor — budget for that in your timing budget.
4170 Vrms isolation and industrial temperature range
Rated for 4170 Vrms isolation, this part meets the reinforced isolation requirements for many industrial and medical power supplies, motor drives, and sensor interfaces where galvanic separation is a safety or noise-rejection requirement.
Active lifecycle and sourcing reality
Supplied in tube in the 6-SMD gull wing package.
DC input only — no AC rectification
The input type is DC. There is no built-in anti-parallel LED for AC line sensing; if your application requires 50/60 Hz mains detection, you need an external bridge rectifier or a different optoisolator with back-to-back LEDs (e.g., the H11AA1 series).