Support is limited to customers who have already adopted these products. The PS2581AL1, PS2581AL2 are optically coupled isolators containing a GaAs light emitting diode and an NPN silicon phototransistor in a plastic DIP (Dual In-line Package) to realize an excellent cost performance. Creepage distance and clearance of leads are over 8 millimeters. The PS2581AL2 is lead bending type (Gull-wing) for surface mounting.