| 4N31300 | Fairchild Semiconductor | 6-Pin DIP Photodarlington Output Optocoupler |
| 4N31300W | Fairchild Semiconductor | 6-Pin DIP Photodarlington Output Optocoupler |
| 4N313S | Fairchild Semiconductor | 6-Pin DIP Photodarlington Output Optocoupler |
| 4N313SD | Fairchild Semiconductor | 6-Pin DIP Photodarlington Output Optocoupler |
| 4N31S | Fairchild Semiconductor | 6-Pin DIP Photodarlington Output Optocoupler |
| 4N31SD | Fairchild Semiconductor | 6-Pin DIP Photodarlington Output Optocoupler |
| 4N31W | Fairchild Semiconductor | 6-Pin DIP Photodarlington Output Optocoupler |
| 4N32 | Fairchild Semiconductor | 6-Pin DIP Photodarlington Output Optocoupler |
| 4N32 | Toshiba | Photocouplers - Transistor Output |
| 4N32 | Vishay | Optocouplers |
| 4N32-X007 | Vishay | Optocouplers |
| 4N32-X009 | Vishay | Optocouplers |
| 4N32300 | Fairchild Semiconductor | 6-Pin DIP Photodarlington Output Optocoupler |
| 4N32300W | Fairchild Semiconductor | 6-Pin DIP Photodarlington Output Optocoupler |
| 4N323S | Fairchild Semiconductor | 6-Pin DIP Photodarlington Output Optocoupler |
| 4N323SD | Fairchild Semiconductor | 6-Pin DIP Photodarlington Output Optocoupler |
| 4N32S | Fairchild Semiconductor | 6-Pin DIP Photodarlington Output Optocoupler |
| 4N32SD | Fairchild Semiconductor | 6-Pin DIP Photodarlington Output Optocoupler |
| 4N32W | Fairchild Semiconductor | 6-Pin DIP Photodarlington Output Optocoupler |
| 4N33 | Fairchild Semiconductor | 6-Pin DIP Photodarlington Output Optocoupler |