The PS8302L-E3-AX: The Renesas NEPOC PS8302L--AX is a single-channel optocoupler with a transistor output, rated for 5000Vrms of galvanic isolation in a compact 6-SOIC surface-mount package. That isolation level separates a DC input from a transistor output across a reinforced insulation barrier, which is the baseline for industrial motor drives, power-supply feedback loops, and PLC digital inputs where the primary-side and secondary-side grounds must stay decoupled. The 6-SDIP (6.80mm width SOIC variant) footprint keeps the board area tight while maintaining creepage distance for the 5kV rating.
CTR floor and LED drive — the BOM-relevant spec
The minimum current transfer ratio of 15% at 16mA forward current sets the design constraint for the LED drive resistor. With a typical forward voltage of 1.6V, the input-side circuit needs to deliver 16mA to guarantee the output transistor saturates. The 8mA per-channel output current ceiling means this is a signal-level isolator — it drives logic inputs or low-power loads, not relays directly. Turn-on time of 300ns and turn-off of 330ns (typical) keep it fast enough for 1-2 MHz switching signals in isolated gate drive or data-interface applications.
Temperature grade and deployment context
The -55°C to 110°C operating range covers the full industrial temperature band with headroom into military-grade cold extremes. The 35V output maximum gives the transistor side enough compliance for 24V industrial logic rails without an extra clamp.