The H11A4SVM: Available through independent distribution; quantities are lot-specific and confirmed at RFQ. This is a last-time-buy or surplus-channel part, not a design-in candidate.
Isolation and switching parametrics
Rated for 7500Vpk isolation — this is a high-voltage barrier, suited for isolating control-side logic from line-voltage or motor-drive circuits where reinforced insulation is required. Minimum current transfer ratio (CTR) of 10% at 10 mA forward current means the output transistor conducts at least 1 mA collector current for 10 mA LED drive — enough to saturate a downstream logic input or a small-signal relay coil. Typical turn-on and turn-off times are both 2 µs, giving a switching ceiling around 250 kHz for digital signals — adequate for 50/60 Hz line sync, slow optocoupler feedback, or isolated serial data at moderate baud rates.
6-SMD Gull Wing package (supplier device package 6-SMD) — surface-mount with gull-wing leads for automated pick-and-place. The 0.100-inch (2.54 mm) lead pitch is standard for optocouplers of this class.