The onsemi H11A23SD is a single-channel optoisolator in a 6-SMD Gull Wing package, combining a DC-input LED with a phototransistor output that has a base terminal brought out for external bias or speed-up networks. Rated for 5300Vrms isolation, it provides a reinforced safety barrier between the input and output circuits — suitable for motor-drive feedback, PLC digital inputs, and medical equipment where galvanic separation is mandatory. Typical turn-on and turn-off times are 2µs each, supporting signal frequencies up to roughly 250kHz before the output waveform degrades — fast enough for most serial data and PWM isolation applications.
Temperature range and environment
Operating over -55°C to 100°C, the H11A23SD covers the full industrial temperature envelope — from cold-start outdoor equipment to warm cabinet interiors near power supplies. The 6-SMD Gull Wing footprint is compatible with standard reflow soldering profiles; the package sits on the board surface, so no through-hole holes are needed in the PCB layout.