Photocoupler. High Isolation Voltage, AC Input Response Type, Multi Photocoupler Series. The PS2565-1 is optically coupled isolators containing GaAs light emitting diodes and an NPN silicon phototransistor. The PS2565-1 is in a plastic DIP (Dual In-line Package) and the PS2565L-1 is lead bending type (Gull-wing) for surface mount. The PS2565L-1-1 is lead bending type for long creepage distance. The PS2565L2-1 is lead bending type for long creepage distance (Gull-wing) for surface mount.