What this optoisolator does in the assembly
The PS8302L2-E3-AX: The Renesas PS8302L2--AX is a single-channel, DC-input, transistor-output optoisolator from the NEPOC series. It provides 5000Vrms of galvanic isolation between input and output, with a typical turn-on time of 300ns and turn-off of 330ns.
The 5000Vrms isolation rating is the key spec for safety-critical designs. It meets reinforced insulation requirements for industrial mains-connected equipment and medical electronics where the isolation barrier must survive transient overvoltages. The 6-SOIC package (6.80mm width) provides the creepage distance needed to maintain that rating across the board — no extra slotting or conformal coating required for basic isolation.
Switching speed and current transfer ratio
Minimum CTR is 15% at 16mA forward current. Switching times are 300ns/330ns.
Temperature range and environment
Operating temperature range is -55°C to 110°C.
