Obsolete — what that means for your BOM
onsemi lists the H11A2300W as Obsolete. This part is sourced through independent distribution channels — quantities are lot-specific and confirmed at RFQ.
Isolation and signal transfer — the key parametrics
Rated for 5300Vrms isolation — this is the galvanic barrier between the input LED and the output phototransistor. In a 230VAC motor-drive feedback circuit, that margin covers the peak transient without flashover across the DIP body. Minimum current transfer ratio is 20% at 10 mA forward current. At 10 mA in, the output transistor sinks at least 2 mA — enough to pull a 5V logic input low through a 2.2 kΩ pull-up. The 2 µs typical turn-on and turn-off times suit 100 kHz switching or slower. Operating temperature spans -55°C to 100°C — the full industrial range plus cold-soak margin. The 400 mV max Vce saturation at rated output current keeps the voltage drop across the transistor low in the on-state.
6-DIP with 0.400-inch (10.16 mm) body width — the wider DIP footprint. Through-hole mounting; the leads are on 0.100-inch pitch. The pinout is standard for the H11A family: anode, cathode, and no-connect on the input side; collector, emitter, and base on the output side. Pin 1 is marked by the dot on the package top.