H11A817A Semiconductor - DIP4 - Fairchild Semiconductor

PC817A SemiConductor - DIP4 - Generic Make

PC817B-ROHS SemiConductor - DIP4 - Generic Make

TLP222G(F) DC Input MOSFET Output Optocoupler DIP 'UK COMPANY SINCE 1983 NIKKO

PC817B SemiConductor - DIP4 - Sharp Microelectronics

1 X IL4208 800V Phototriac Optocoupler Non-Zero crossing DIP6

PC123 Optocoupler IC, Transistor Output, DIP4 ''UK COMPANY SINCE1983 NIKKO''

GK102 Optocoupler photoelectric sensor DIP4 'UK COMPANY SINCE 1983 NIKKO'